FUZE MANUAL EURASIAN COMMUNIST COUNTRIES

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• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP09-01333R000100550001-3
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 502
• Document Creation Date: December 23, 2016
• Document Release Date: September 23, 2013
• Sequence Number: 1
• Content Type: REPORT

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cj FSTC-CW-01-100-13
ARMY MATERIEL COMMAND
U.S. ARMY
FOREIGN SCIENCE AND TECHNOLOGY CENTER
FUZE MNIUAL
EURASIAN COMMUNIST COUNTRIES (U)
SI-4-52 :164
FILE COPY
On loan From FSTC Library
Do not Destroy, Mutilate, Mark
or Alter
C 2(4 7z1 95 (c
AN ARMY INTELLIGENCE DOCUMENT
e 91-t1/41/ /)1
Distribution is limited to US Gevernmeio.t.ijacies only, because document covers
evaluation of military hardware (Jurte.14113 . Other requests for this document
must be referred to US Army Foreign Science and Technology Center, 220 7th r
Street, NE., Charlottesville, VA 22901. t..%
%I.
(.25.c.ra
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FUZE MANUAL
EURASIAN COMMUNIST COUNTRIES (U)
FSTC-CW-07-100-73
Publication Date: 15_,June,1_91,3?,
Information Cutoff DEte: December 1972
AN ARMY INTELLIGENCE DOCUMENT
This product contains agreed Department of
the Army Intelligence.
This product was prepared by the Foreign
Science and Technology Center of the US
Army Materiel Command. It has been reviewed
and approved by the Office of the Assistant
Chief of Staff for Intelligence, Department
of the Army.
Distribution is limited to US Government agencies only,
because document covers evaluation of military hardware.
Other requests for this document must be referred to US
Army Foreign Science and Technology Center, 220 7th
Street, NE., Charlottesville, VA 22901.
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PREFACE
This manual is designed to help identify munitions fuzes produced
and used by the Eurasian Communist countries (ECC) and to describe
their functioning, appearance, and current status.
This publication outlines the technical characteristics, current
status, brief history, and detailed functioning of ECC munitions fuzes
which have been recovered to date. No attempt has been made to include
each individual fuze, but rather to include the most recent development
in a fuze family. Air-dropped, hand grenade, mine, and improvised
fuzes are not included.
The fuzes are arranged according to their tactical use and
function, and are subdivided by country of origin.
The technical information contained in this manual is general and
in most cases has been compiled from hardware examination. In some
cases the information has been extracted from US and foreign documents
which are considered accurate. Other fuzes are known to exist for
which factual information is not available.
A reference to technical reports where additional details may be
found has been included whenever possible.
Additions and corrections to this publication are encouraged.
Comments should be addressed to: Commander, US Army Foreign Science
and Technology Center, 220 7th Street, N.E., Charlottesville, Virginia
22901.
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TABLE OF CONTENTS
Page
Preface
Summary vii
CHAPTER 1. FUZES FOR AIRCRAFT AND LIGHT ANTIAIRCRAFT GUNS
Section I. USSR
1. Introduction 1-3
2. Point Detonating Fuzes 1-5
Section II. People's Republic of China
1. Introduction 1-45
2. Point Detonating Fuzes 1-47
Section III. Czechoslovakia
1. Introduction 1-51
2. Point Detonating Fuzes 1-53
CHAPTER 2. BASE DETONATING FUZES
Section I. USSR
1. Introduction
2-3
2. Base Detonating Fuzes 2-5
Section II. People's Republic of China
1. Introduction 2-77
2. Base Detonating Fuzes 2-79
Section III. Other Eurasian Communist Countries
1. Introduction 2-87
2. Base Detonating Fuzes 2-89
CHAPTER 3. POINT DETONATING FUZES
Section I. USSR
1. Introduction 3-3
2. Point Detonating Fuzes 3-5
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TABLE OF CONTENTS (Continued)
Section II. People's Republic of China
Page
1. Introduction
3-149
2. Point Detonating Fuzes
3-151
Section III. Czechoslovakia
1. Introduction
3-243
2. Point Detonating Fuzes
3-245
CHAPTER 4. MECHANICAL AND POWDER TRAIN TIME FUZES AND MISCELLANEOUS
PROJECTED FUZES
Section I. Mechanical and Powder Train Time Fuzes of the USSR
1. Introduction
4-3
2. Mechanical and Powder Train Time Fuzes
4-5
Section II. Miscellaneous Projected Fuzes
1. Introduction
4-49
2. Miscellaneous North Vietnamese Fuzes
4-51
Index of Fuzes
A-1
DD Form 1473
B-1
Distribution
C-1
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SUMMARY
Early Soviet fuze designs were based on principles whose use was
seen in French Schneider fuzes. The Schneider Company built and
operated cannon and projectile manufacturing plants in pre-Revolutionary
Russia and exerted a great influence on early Russian artillery thinking.
This condition continued until World War II when German munition
practices severely modified the original French influence. Today, basic
fuze principles originating in all the major munition producing countries
of the world are used in Soviet fuzes.
Other Eurasian Communist countries (ECC) have, in general, closely
followed Soviet designs.
For example, following the Korean War, several countries duplicated
the Soviet fuze designs even to the extent of using Soviet markings or a
translation of them. Evidence, however, points to the existence of an
independent design and production capability in most Eurasian Communist
countries.
Major ECC design changes have included the use of robust fuze
bodies, graze weights, and inertial movement of the primer and/or
primer detonator concurrently with the rearward movement of the firing
pin.
Bore and detonator safety have been achieved by the use of out-of-
line detonators or rotors secured by pyrotechnic, centrifugal or setback
detents. Environmental proofing has been developed to the point where
fuzes have been stored in water for a considerable time with no adverse
effects.
Although ECC fuzes do not meet US safety standards, they are
considered extremely reliable and effective.
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Chap ter I
Fuzes for Aircraft and Light Antiaircraft Guns
1-1
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Section I.
USSR
1. Introduction
a. Fuzes of this category are mechanical, point detonating, impact
types that are designed to function reliably on light materiel targets.
Aircraft gun fuzes appear to have been based on World War II German
designs. In some cases, exact copies of internal components have been
noted.
b. The Soviet antiaircraft gun fuzes employ pyrotechnic type self-
destruct features. The same principles are employed in fuzes used in
weapons from 23-mm through 57-mm calibers. The purpose of the self-
destruct feature is to destroy projectiles that miss their targets at
an altitude where the fragmenting projectile will not endanger friendly
ground units.
c. All of the Soviet fuzes in the aircraft and antiaircraft
classification are boresafe, in that they are provided with mechanical
features designed to prevent the fuze from arming while in the tube of
the weapon. Some of the earlier fuzes are not detonator safe, by
American standards, in that the explosive train is not positively
interrupted to preclude an in-bore detonation. However, a major trend
is indicated toward both bore and detonator safe fuzes.
d. Soviet fuzes are normally plainly marked on the ogive with the
fuze nomenclature. Where space is available the lot number, year of
manufacture, and plant number are included. Antiaircraft fuzes are
normally "blued" or painted black with an additional coating of varnish
or epoxy to inhibit external corrosion. If the fuze is cadmium plated,
the exterior epoxy or varnish coating is still applied. Some fuzes have
been seen with colored lacquer on the nose. The significance of the
color has not been determined. It has been noted that not all fuzes of
a specific designation, produced by the same plant, have the color
marking.
e. Normally aircraft and antiaircraft fuzes do not require any
preparation for firing. The larger calibers, such as 57-mm, possess
fuzes with removable shipping caps to increase impact sensitivity, but
it has not been determined what the presence of a cap signifies, other
than as a shipping safety device.
1-3
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Fuze, point detonating, A-20
(No photograph available)
DISCUSSION
The A-20 point detonating fuze is centrifugal armed and impact fired.
It is similar in construction and identical in function to the A-23 fuze
but differs markedly in length. When assembled to a projectile, it has
a visible length of about 0.56 inches compared to 0.95 inches for the
A-23. By Soviet standards the A-20 is considered boresafe because of a
coiled copper spring which prevents the firing pin from striking the
detonator. One spanner wrench hole is located near the base of the fuze
body.
CHARACTERISTICS
Fuze Assembly:
Functional Data:
Body material
Weight
Steel
Arming method -------
Centrifugal
force
Markings
A-20
Firing method
Impact
Booster
Safety devices
Coiled arming
Body material
Aluminum
spring
Body length
0.57 in
Arming distance
Explosive
Tetryl
Arming time
Explosive weight
Self-destruct time - - -
None
Delay time
Instantaneous
1-5
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Fuze, point detonating, A-20
FUNCTIONING DESCRIPTION
Same as A-23.
(No line drawing available)
(No disassembled view available)
1-6
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Fuze point detonating, A-20
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
20-mm ShVAK Aircraft Gun
REFERENCE
None
20-mm HEI-T OZT
1-7
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DISCUSSION
The A-23 point
Although simil
to the short st
vents the firing
?clears the bore.
fuze body.
:Fuze Assembly:
Body material -
Markings
Booster.
Body material
Body length -
Explosive ---
Explosive weight --
e spanner wrench hole I
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?natlng, A-23
armed and impact fired,
shape is triking contrast
A coiled copper spring pre-
the projectile
ated near the base of the
Arming
0.056 lh
A-23 ' Firing method -
Safety devices -
- Aluminum
- 0.63 in
Tetryl
Arming distance -
Arising time
se-destruct time---
belay
time?
Delay time ----------
Centrifuge
force
Impact
C ilml arming
ing
aneous;
1-9
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Fuze. point detonating, A-2]
FUNCI7ONINC DESORTPTiON
Prior to firing, the coiled copper arming spring (4) )reaents the firing
pin (3) ?from striking the detonator fia, ;Then the projectile has left the
bore of the weapon, centrifugal force causes the arming spring to inimind,
making the hole in its center' large enough to a licia the firing pin to
pa5 through. On impact, the nose disk (1) is crushed and the aluminum
striker (2) cr Lves the firing in (3) through the f iring pin guide and
safety disk into the detonator (5), which initiates the explosive -charge
?in the projectile.
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Fuze, point detonating, A-23
WEAPONS AND PROJECTILES USED WITH
Weapons
23-mm Aircraft Gun
Models NR and NS
23-mm Antiaircraft Gun, M1940
REFERENCE
None
Projectiles
23- HEI-T OZT
23-mm T OZR- 2
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Fuze, point detonating, A-37 and A-37U
DISCUSSION
The A-37 and A-37U point detonating fuzes are setback and centrifugally
armed, self-destruct fuzes which employ an out-of-line detonator. The
fuzes are identical !with the exception of the self-destruct time.
CHARACTERISTICS
Fuze Assembly:
Body material ---------
Weight
Markings -----
Booster
Body material ---------
Body length -----
Explosive -----
Explosive weight ------
.Functional Data:
Steel 1 Arming method --------- Setback and
0.39 lb
A-37,A-37Y
Steel
0.55 in
PETN
65.3 gr
centrifu-
gal force
Firing method --------- Impact
Safety devices --------Out-of-line
detonator
ALuing distance -------
Arming time ----------- ?
Self-destruct time
Delay time -
1-13
---- A-37(3 sec)
A-37U(10-12
sec)
-Instantaneous
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Puze point detonating, A-37 and 4-37U
FUNCTIONING DESCRIPTION
On tiring, the setback igniter pellet (8) overcomes the resistance of the
safety spring (9) and strikes the setback firing pin (10). The resulting
flash ignites both the self-destruct powder train (6) and a black powder
pellet (11) which holds a rotor locking pin in place. As the black pow-
der pellet burns, centrifugal force causes a second rotor locking pin to
compress its retaining spring and move out of a recess in the rotor (2);
after the black powder pellet burns away, the first locking pin also
moves out of its recess in the rotor, which is then free to rotate in the
U-shaped trough of the rotor mount (4). (Since the locking pin retained
by the powder pellet immobilizes the rotor until the second locking pin
clears the powder pellet walled recess in the rotor, any possibility of
the rotor jamming the latter pin is precluded. The rotor recess for the
pellet-retained pin has sloped walls, so that movement of the rotor tends
to cam this pin out of the recess, rather than to jam it.) Centrifugal
force causes the freed rotor, whose center of gravity is located off the
axis of rotation, to turn 900 around the pivot pins, thus aligning the
primer charge (3) with the impact firing pin (1) and the detonator
assembly (5). Impact crushes the nose cap and the impact striker
(1) drives the impact firing pin into the primer charge. The flash
from the primer charge passes to the detonator assembly, which
activates the booster (7), and the booster in turn activates the
1-14
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Fuze point detonating, A-37 and A 7U
projectile's charge. If impact does not occur first, the burning self-
destruct powder train in the powder train ring (6) will ignite the
detonator, and the fore will function 2.5 to 3 seconds after the round
Is fired The A-37U will self-destruct 10 to 12 seconds after the
round is fired.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
3I-mm Aircraft Gun, Model N-37
REFERENCE
37- T On
(No disassembled view available)
Picatinny Arsenal Memorandum Report No 54, dtd May 1954.
1-15
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DISCUSSION
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Fuze, point detonating, 8-30
The B-30 is a point detonating, self-destruct fuze used on 30-mm high
explosive incendiary projectiles. The body material is anodized steel
with a red painted tip. The fuze is armed by setback and centrifugal
force. Although firing pin movement is prevented by the centrifugal
arming coil, the fuze is not considered boresafe by US standards because
of the in-line detonator. The design and functioning of the 13-30 is
similar to the Soviet MG-25 fuze used on 23-mm projectiles.
CHARACTERISTICS
]Fuze Assembly:
Functional Data:
' Body material ---------
Steel
Ai-ming method ---------
Setback and
Weight ----------------
0.17
lb
centrifugal
Markings --------------
E -30
force
Booster
Firing method ---------
Impact or SD
Body material ---------
Steel
Safety devices --------
Flat coiled
Body length -----------
.583
in
spring
Explosive -------------
?
Arming distance -------
?
--- ?
Arming time ---_______-
Explosive weight
Self-destruct time ----
?
Delay time _____-------
Instantaneous
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Fuze, point detonating, B-30
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, the setback sleeve moves to the rear, bending the four tabs
of the safety sprirg and slides into tha internal support ring. This
frees the coiled flat spring, which expands by centrifugal force and
clears the path for the tiring pin. Simultaneously, the weighted self-
destruct pellet is moved to the rear by setback, overcoming the resist-
ance of its helical spring and impinging on the fixed self-destruct firing
pin. The resulting flash passes through the flash channel and ignites the
qelf-de3truct delay element. Upon impact, the firing pin is driven into
the prime: whizh initiates the detonator and succeeding components of the
explcrive train. If impact does not occur, the self-destruct powder train,
aftor ignition at setback, burns through its delay period, initiates the
primer, and in turn, the detonator, booster, and main explosive daarge.
(No disassembled view available)
1-18
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Faze,point detonating, B-30
WEAPONS MID PROJECTILES USED WITH
teapons?
jec e
30-mm HEI
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items
Foreign Ammunition (U), (SECRET-NFD).
1-19
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DISCUSSION
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Fuze, point detonating, 5-37
The B-37 is a modified MG-37; their appearance and functioning are almost
identical. They are setback and centrifugally armed self-destruct fuzes
that have an out-of-line detonator. The major internal improvements in-
clude a rotor lock pin that locks the rotor in the armed position, re-
placement of the press fitted detonator with one held in place by a
threaded keep ring. Additionally, water proofing qualities have been
improved by the incorporation of a press fitted lead ring at the junction
of the fuze base and booster cup and a vinyl "0" ring in the nose crimFing
groove which is compressed by crimping the nose cap.
bkilACTERISTICS
'Fuze Assembly:
Body material -
Markings
kBOoStet
1 Body material
Body length.-----
Explosive -----
Explosive weight ------
Steel
0.55 in
PETN
60.6 gr
notional Data:
Arming method --
- Centrifugal
force
ethod Impact
Out-of-line
detonator
Safety Devices ---
Arming distance
Arming time -----------7
Self-destruct time 12 sec
Delay time -- Tns taneousl
1-21
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Fuze, point detonating, 3-37
FUNCTIONING DESCRIPTION
The 13-37 has a detent lock pin which locks the rotor in the aiised
position. All other components function exactly like their counterparts
in the MG-37.
1-22
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Fuze, point detonating, B-37
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
37-mm Antiaircraft gun, M1939
37-mm Frag T, OR-167
REFERENCE
FSTC Exploitation Report CR-20-35-71, dated December 1971.
1-23
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Fuze, point detonating, K-6
(No photograph available)
DISCUSSION
The K-6 is similar to the K-20 in construction, material, and
functioning, but is considerably smaller.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material ---------
Body length
Explosive
Explosive weight ------
Steel
K-6
Steel
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
- - - - None
Arming distance
Arming time
Self-destruct time None
Delay time Instantaneous
1-25
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Fuze, point detonating, K-6
Meg. 511709
FUNCTIONING DESCRIPTION
Upon firing, inertia causes the arming sleeve (4) to setback, releasing
the arming sleeve retaining balls (3) and compressing the arming spring
(7). After the projectile leaves the bore, the arming spring moves the
arming sleeve forward, freeing the two firing pin check balls (5); the
two balls are then forced out of their housing in the firing pin guide
(2) by centrifugal force, freeing the firing pin. On impact, the
striker (1) drives the firing pin (6) through the safety disk (8) into
the detonator initiating pellet which initiates the main explosive
charge.
(No disassembled view available)
1-26
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Fuze, point detonating, K-6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
20-mm Aircraft gun ShVAK
REFERENCE
None
20-mm HEI-T, OZT
1-27
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Fuze, point detonating, K-20 and K-20M
(No photograph available)
DISCUSSION
The K-20 and K-20M fuzes are armed by setback and centrifugal force and
do not include a self-destruct feature. The fuzes are identical in
external dimensions, body material, functioning, and internal con-
struction. Some K-20M internal parts differ in size and material. The
external surface has a smooth contour and a foil disk is pressed into
the nose. The K-20 has a foil cap that is crimped into a groove around
the nose contour.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length -----
Explosive
Explosive weight ------
Steel
K-20 K-20M
Steel
Functional Data:
Arming method - - - - - Setback
Firing method - - - Impact
Safety devices -------- None
Arming distance - - ?
Arming time - - - ?
Self-destruct time ---- Instanta-
neous
Delay time N/A
1-29
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Fuze, point detonating, K-20 and K-20M
1 54?
9
10
Ilk
steL?:70:11
ral
NrrAtWar
ItTA
p710:
hIM
\o,
_
Lannii
Neg. 511710
6
FUNCTIONING DESCRIPTION
Upon firing, the arming sleeve (4) sets back, compressing the arming
sleeve spring (5) and creating an outlet for the three arming sleeve
retaining balls (9). After the projectile has left the gun tube and
centrifugal force has thrown the retaining balls out of their housing,
the arming sleeve spring overcomes the force of inertia and moves the
arming sleeve forward until it frees the two firing pin check balls
(10). The check balls are forced into the fuze body cavity through
openings in the striker guide (3), and only the safety disk (7) remains
between the firing pin (6) and the detonator assembly. Upon impact,
the foil cap (1) is crushed inward, and the striker (2) drives the
firing pin through the safety disk into the detonator initiating
pellet (8), which initiates the main explosive charge.
(No disassembled view available)
1-30
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Fuze, point detonating, K-20 and K-20M
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
23-mm Aircraft gun, Model VYa
25-mm Antiaircraft gun, M1940
REFERENCE
None
23-nun HEI-T, OZT
25-mm FRAG-I-T, OZR-132
1-31
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Fuze, point detonating, MG-25
(No photograph available)
DISCUSSION
The MG-25 fuze is armed by setback and centrifugal force and includes
a pyrotechnic 5- to 8-second self-destruct feature. The fuze body is
silver with a red-tipped nose. A single spanner wrench hole is located
near the base of the fuze body. Bore safety is maintained by the use
of a flat coiled spring which prevents the firing pin from initiating
the primer until the spring is uncoiled by centrifugal force.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length Explosive
Explosive weight
Steel
0.37 lb
Mr-25
Steel
PETN
26.19 gr
Functional Data:
Arming method setback and
spin
Firing method Impact
Safety devices Coiled arm-
ing spring
Arming distance 10 ft
Arming time
Self-destruct time 5 to 8 sec
Delay time Instanta-
neous
1-33
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Fuze, point detonating, MG-25
Neg. 511711
FUNCTIONING DESCRIPTION
Upon firing, the setback sleeve (4) moves downward, forcing its way
through the four prongs in the setback spring (5) which hold the sleeve
in the rearward position. Simultaneously the weighted self-destruct
flash pellet moves downward, compressing its spring and strikes the
fixed firing pin. The resulting flash passes through a lateral hole
from the self-destruct initiator cavity into the pyrotechnic delay
cavity, igniting the self-destruct element. Centrifugal force in the
meantime, has caused the coiled arming spring (3) to expand, releasing
the firing pin (2). Upon impact, the striker (1) and firing pin (2) are
driven rearward into the primer. The resulting flash ignites the relay
pellet which flashes through the two flash holes in the booster cup
detonating the booster (6). If no impact with the target occurs, the
self-destruct element will ignite the flash pellet which flashes through
the two flash holes in the booster cup causing the booster to detonate
the main charge.
1-34
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511712
:HC t:2crt, .hitv
(1.w..eme
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FSTILYTT-07-100-73.
Fuze,. point detonamiubs 4G-37 and 00-B
DISCUSSION
The MO-37 is an improved version of the 10-8. They are both setback and
centrifegelly armed self-destruct juges that have an out-of-line
detonator. They are almost
internal difference appears
arming safety arrangement
?one.
CBBRACTERIBTJCS
identical
to be
involving
in appearance and the
a redesigned rotor and an
two rotor locking pins
only major
improved
instead of
Fuze Assembly:
Functional Data:
Body material ---------
Steel
0.30 Lb
Arming method ---------
Setback and
centrifugal
Marking:. --------------
07-33
mr-8
Firing. method
C orce
Impact
Booster
Safety devices --------
Out-of-line
Body material ---------
Steel
detonator
Body length -----------
0.55 in
Arming distance -------
ff
IExplosive -------------
PETS
Arming time -----------
Explosive weight ------
60.6 gr
Seli-destruct time ----
10-12 sec
Delay time ------------ Instantaneous
1-37
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Fuze, point detonating, MG-37 and MG-8
Its. 511714
FUNCTIONING DESCRIPTION
On firing, the setback igniter pellet (12) overcomes the resistance of
the safety spring (13) and strikes the setback firing pin (14). The
resulting flash ignites both the powder train in the self-destruct
element (7) and a black powder pellet (15) which holds a rotor locking
pin (16) in place. As the black powder pellet burns, centrifugal force
causes a second rotor locking pin (11) to compress its retaining spring
and move out of a recess in the rotor (3); after the black powder pellet
burns away, the first locking pin (16) also moves out of its recess in
the rotor, which is then free to rotate in the U-shaped trough of the
rotor mount (6). The locking pin (16) retained by the powder pellet
immobilizes the rotor until the other locking pin (11) clears its
straight-walled recess in the rotor, thereby eliminating any possibility
of the rotor jamming the latter pin (11). The rotor recess for the pellet-
retained pin (16) has sloped walls, so that movement of the rotor tends
to cam this pin out of the recess, rather than to jam it. Centrifugal
force causes the freed rotor, whose center of gravity is located off the
axis of rotation to turn 900 around the pivot pins (10), thus aligning
the primer charge (4) with the impact firing pin (2) and the detonator
assembly (5). Upon impact with the target, the nose cap is crushed and
the impact striker (1) drives the impact firing pin into the primer
charge. The flash from the primer charge passes to the detonator assembly,
1-38
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Fuze, point detonating, MG-37 and MG-8
which activates the booster (9), and the booster in turn activates the
projectile's explosive charge. If impact does not occur first, the
burning self-destruct powder train in the powder train ring (8) will
ignite the detonator, and the fuze will explode the projectile from 10-
12 seconds after the round is fired.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
37-mm Antiaircraft gun
111939
37-mm FRAG-T, OR-167
(No disassembled view available)
REFERENCE
Picatinny Arsenal, Memorandum Report No. 23, Addendum No. 7, Dec 53.
1-39
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DISCUSSION
The MG-57 and MGZ-57 fuzes are centrifugally armed self-destruct fuzes
that have an out-of-line detonator. Arming is initiated by setback, which
causes a weighted detonator to strike a fixed firing pin in the rotor;
this flashes through and initiates the delay self-destruct charge and a
black powder detent holding the rotor out of line. The MGZ-57 has a
steel firing pin supported by a creep spring, and a threaded striker
FSTC-CW-07-100-73
Fuze point detonating, MG-57 and MGZ -57
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
'Functional Data:
Steel
0.74 lb
Mr57; Mr3-
57
Steel
1.24 in
PETN
129.61 gr
(2.57 ozs)
Arming method Centrifugal
force
Firing method Impact
Safety devices Out-of-line
detonator
Arming distance
Arming time
Self-destruct time 15 ?3 sec
Delay time Instanta-
neous
1-41
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Fuze, point detonating, MG-57 and MGZ-57
protective cap, while the MG-57 has a steel firing pin attached to a
wooden striker supported by a wax filler, and a pressed on protective
cap with a pull wire. Other modifications that may be found in the
MGZ-57 include a removable primer detonator secured by a lock ring, a
concave surface on the booster pellet and vinyl washers to improve
moistureproofing qualities. Both fuzes may be found with a threaded
protective cap or a cap secured by a pull wire.
Neg. 511716
26
ALL DIMENSIONS IN INCHES
I?
18
19
20
21
23--
FUNCTIONING DESCRIPTION
Upon firing, the setback igniter pellet (10) is ignited by the fixed
firing pin (12). The flash, ignites both the self-destruct powder train
(26) and the rotor lock pellet (20). As the pellet burns, centrifugal
force unlocks the rotor detents (10 and 19) and aligns the rotor (5),
and the primer and detonator (18) with the firing pin (4). Upon impact
with the target the nose cap is crushed and the striker drives the
firing pin (4) into the primer which fires the detonator (18), booster
and main charge.
If the projectile fails to impact on a target, the self-destruct element
completes its burning and initiates the detonator in approximately 15
seconds.
1-42
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Fuze, point detonating, MG-57 and MGZ-57
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
57-mm Antiaircraft gun
S-60
RETAINER, SCREW
57-mm HE-Frag OR-281
CAP, most
CRUSH
Fr? PK THING
&PRIEM
bSIRO. FREE
MIGHT;N... ...,--- RETAINER'. SCREW
'fan -Z..: i.? of/ORATOR
PRIMER, SPRING --?-?-, NM LOCK
Mk. FIRMS --"-? ?4`4-.......--. ROTOR
11013116. ROTOR-----.... sk , MR PIVOT
MT PIVOT ti/ ? ? T.* RETAMER. SCREW
(INCISIVE IMES
RITAIRER. SCREW `? PIN, [001007
PRI. LIETENT e......--?Mb, ALTGEMIENT
SEAL, METALa.
SEAL, FIBER ---"*"
CHARGE. LEAD
SEAL, PAPER
HORSING, Tat
IIMPL RELT.OESTRUCT
ASSEMBLY ROTOR
.0? AMMER V.
WASHER PLASTIC
SELF DESTRUCT
CAP TOIL
ASSEMBLY. BOOSTER
WASHER, PAPER
---?-
453E10 ITS, EWE
110115010. BOOSTER
LOCK POIR AL
%Mr
REFERENCE
USAFSTC Exploitation Report, FSTC-318-3152, dated Jan 1966.
FSTC Exploitation Report CR-20-136-68, dated April 1969.
1-43
(Reverse Blank)
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Section II.
PEOPLE'S REPUBLIC OF CHINA
1. Introduction
No evidence has been received of FRC-designed fuzes for aircraft
and light antiaircraft projectiles.
1-45
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Fuze, point detonating, Type 37
(No photograph available)
DISCUSSION
The PRC Type 37 is identical in construction and functioning to the
Soviet B-37. Soviet markings have been replaced by PRC characters.
CHARACTERISTICS
Fuze Assembly:
Body material Steel
Weight 0.38 lb
Markings 7fi-37
Booster
Body material Steel
Body length 0.55 in
Explosive PETN
Explosive weight 60.6 gr
Functional Data:
Arming method -------- Centrifugal
force
Firing method Impact
Safety devices Out-of-line
detonator
Arming distance ?
Arming time
Self-destruct time 10-12 sec
Delay time Instantaneous
1-47
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Fuze, point detonating, Type 37
(No line drawing available)
FUNCTIONING DESCRIPTION
None
(No disassembled view available)
1-48
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Fuze, point detonating, Type 37
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
REFERENCE
None
1-49
(Reverse Blank)
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Section III.
CZECHOSLOVAKIA
1. Introduction
Czechoslovakia is capable of indigenous fuze design, but utilizes
Soviet or Soviet-designed fuzes for aircraft and light antiaircraft
projectiles.
1-51
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Fuze, point detonating, A-37
(No photograph available)
DISCUSSION
The Czechoslovak A-37 fuze is a direct copy of the Soviet A-37 fuze.
Internal components, functioning and markings are identical.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.38 lb
A-37
Steel
0.55 in
PETN
65.3 gr
Functional Data:
Arming method
Firing method
Safety devices - - - -
Arming distance
Arming time
Self-destruct time
Delay time
Setback and
centrifugal
force
Impact
Out-of-line
A-37 (3 sec)
A-37Y (10-12
sec)
Instantaneous
1-53
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Fuze, point detonating, A-37
FUNCTIONING DESCRIPTION
None
(No line drawing available)
(No disassembled view available)
1-54
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Fuze, point detonating, A-37
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
37-mm Aircraft gun, Model N-37
37-mm HEI-T, OZT
REFERENCE
Ordnance Technical Intelligence EvaluatiOn Report OTIAA.779, dated
October 1958.
1-55
(Reverse Blank)
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Chapter 2
Base Detonating Fuzes
2-1
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Section I.
USSR
1. Introduction
a. The majority of the base detonating fuzes employed by the
Eurasian Communist countries are direct copies or modifications of
Soviet base detonating fuzes. The mechanical characteristics of
individual fuzes, especially in later designs, possess features that
reveal a positive trend toward increased safety in handling and firing.
The piezoelectric VP-7 displays the greatest departure from standard
Soviet base detonating fuze design. This fuze is the first piezo-
electric one recovered. It also is the first detonator-safe base
detonating fuze, incorporating a vertically sliding detonator carrier
in lieu of the normal detonator rotor.
b. Soviet base detonating fuzes are employed in concrete-
piercing and armor-piercing ammunition that is fired from field, anti-
tank, or grenade and rocket launchers. All Soviet base detonating
fuzes, with the exception of the point initiating base detonating types,
are designed to function by impact inertia. Some incorporate the
conventional pressed black powder delay pellet or the newer gasless
delay mixtures. A few base detonating fuzes have a deceleration dis-
crimination feature to delay fuze functioning until the projectile has
achieved target penetration, regardless of target thickness.
c. The Soviets expend the same effort upon environmental proofing
base detonating fuzes as they do upon the other fuze classes. Lead
sealing rings, nylon pipe thread sealant, plastic rings and sealing
compounds are all employed for waterproofing. Although base detonating
fuzes are mounted inside explosive ordnance and do not require the same
effort toward environmental proofing, it appears that current Soviet
ammunition design philosophy requires that all fuzes receive this
treatment.
d. Base detonating fuzes receive the same care in marking as do
the other classes of fuzes. Each is diestamped with the fuze designation,
lot number, and factory identification, when space permits. Those base
detonating fuzes that are permanently assembled in projectiles are
marked on body flanges so that the information can be read directly from
that portion of the fuze that protrudes from the projectile.
2-3
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Fuze, base detonating, AV-96
(No photograph available)
DISCUSSION
The Soviet Model AV-96 fuze is a gas-armed base detonating, impact fuze
designed with a slight delay. It is used with 82-mm and 132-mm rockets.
The fuze consists of a steel body housing an impact mechanism, a delay
pellet, a detonator, and a booster. The delay pellet, located between the
primer and the detonator, requires a minimum burning time of 0.04 second
before the flame from the primer can be transmitted to the detonator.
CHARACTERISTICS
Fuze Assembly:
Body material -------- Steel
Weight ---------- ?
Markings AB-96
Booster
Body material ------ Steel
Body length ----------- ?
Explosive Tetryl
Explosive weight ------ ?
Functional Data:
Arming method - - ---- Gas pressure
Firing method --------- Impact
Safety devices ----- None
Arming distance ------- ?
Arming time ----- ?
Self-destruct time ---- NA
Delay time ------------ 0.04 to 0.06
sec
2-5
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Fuze, base detonating, AV-96
Neg. 511718
FUNCTIONING DESCRIPTION
The AV-96 is armed by gas generated by the propellant of the rocket
motor. The gas enters the fuze through holes in the base bushing (13),
driving the safety plunger (12) forward until it is stopped by the
shoulder of the base plug (9). With the plunger in the forward position,
the gas pressure reexpands the skirt of the plunger into the locking
groove (11) cut in the base plug, so that the plunger is locked in the
forward position. With the plunger now in the forward position, the
safety transverse hold (10) is opposite the safety balls (7), allowing
them to move inward to unlock the striker (8). Upon impact with the
target, the inertia of the striker causes it to move forward, compressing
the anticreep spring (6), and driving the primer (5) onto the fixed firing
pin (3). Flame from the primer passes through a hole in the firing pin,
igniting the delay pellet (4). After a delay of 0.04 to 0.06 second, the
delay pellet transmits the flame to the detonator (1), which in turn
explodes the booster (2) and the main charge.
A ring of packing at the fuze flange permits a tight seal to be made when
the fuze is screwed into place in the rocket. This prevents gas from the
rocket motor from reaching the rocket's explosive charge. Internal packing
within the fuze provides similar protection for the fuze itself.
2-6
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Fuze, base detonating, AV-96
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm rocket launcher
132-mm rocket launcher, 14-13
REFERENCE
None
82-mm rocket RBS-82
13,2-mm rocket 1tBS-132
(No disassembled yiew available)
2-7
(Reverse Blank)
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Fuze, base detonating, MR
(No photograph available)
DISCUSSION
The MR is the first of a new BD fuze family introduced to the Soviet
inventory since 1950. It is a setback and centrifugal armed, impact fired
fuze, containing a delay element and tracer. Graze sensitivity is obtained
by the use of a graze weight in the base of the fuze. A unique safety
feature is the use of a cup (or washer) with a central hole of a smaller
diameter than the firing pin between the firing pin and the primer. There-
fore, a considerable force is required to drive the firing pin through the
hole to initiate the primer. The delay element is self-regulated according
to the thickness of the armored target. The fuze has been made waterproof by
the use of lead crush rings and vinyl washers.
CHARACTERISTICS
Fuze Assembly:
Body material --------- Steel
Weight 0.94 lb
Markings - - A5P
Booster
Body material - -
Body length - - -
Explosive ----- - -
Explosive weight
Steel
1.18 in
Tetryl
5.96 gm
Functional Data:
Arming method - - -
Firing method
Safety devices
Setback and
centrifugal
force
Impact
Centrifugal
detents
Arming distance - - - - - ?
Arming time
Self-destruct time NA
Delay time -- - - Self-regulating
2-9
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FSTC -CW-07 -100 -73
Fuze, base detonating, DBR
FUNCTIONING DESCRIPTION
Upon firing, setback causes the setback sleeve (1) to move to the rear
compressing the setback spring (2) and covering the detents. The setback
sleeve prevents retraction of the detents (3) until setback diminishes;
at this time, the spring (2) forces the sleeve (1) forward uncovering
the detents. Centrifugal force can now release the detents from the groove
in the primer carrier (4) and the fuze is armed. Upon impact, the impact
collar (5) moves forward against the spring (2). Simultaneously the primer
carrier (4) moves forward compressing the anticreep spring (6) and forcing
the fixed firing pin (7) through a constricted hole in the desensitizer
cup to initiate the primer (8). Flame from the primer flashes through a
flash channel in the firing pin housing to ignite the delay element (9)
which in turn initiates the detonator (10) and booster (11). If the pro-
jectile impacts the target on a flat angle, the graze weight (12) is
cammed to the side bending down one or more legs of the clip (13) holding
the weight in position. The weight continues its sideward movement and the
cammed surfaces force the primer carrier and primer into the firing pin and
initiate the explosive train.
2-10
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FSTC-CW-07-100-73
Fuze, base detonating, DBR
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Gun D-74
130-mm Gun M46
122-mm APC-BC HE-7-BR-472
130-mm APC BR-482B
(No disassembled view available)
REFERENCE
FSTC Exploitation Report, FSTC-CR-20-33-70.
2-11
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, DBR-2
DISCUSSION
The DBR-2 is the second generation in the DBR fuze family. The internal
parts and functioning of the DER and DBR-2 are very similar with the
exception of the delay components. Both fuzes use centrifugal force for
arming purposes, and setback to lock centrifugal detents in position for
bore safety. Two pressure escape ports have been provided in the base of
the fuze to release gas from the tracer element.
CHARACTERISTICS
ruze Assembly:
I Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.82
45P -2
Steel
1.41 ins
Tetryl
26.70 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback and
centrifugal
force
Impact
Centrifugal
detents
Self-destruct time ---- NA
Delay time Self regulat-
ing
2-13
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FSTC-CW-07-100-73
Fuze, base detonating, DBR-2
FUNCTIONING DESCRIPTION
Upon firing, setback causes the setback collar (10) to move to the rear,
compressing the setback spring (25) and covering the spring loaded detents
(12) securing the primer carrier. Approximately one meter beyond the
muzzle, setback diminishes, allowing the spring to force the collar for-
ward and uncover the detents. Centrifugal force can now move the three
detents outward from the groove in the primer carrier; the fuze is now
armed and only the anticreep spring .(23) separates the primer (24) and
fixed firing pin (8). Upon impact, the primer carrier overcomes the force
of the anticreep spring and impinges the primer on the firing pin. Flame
and gases pass through the flash channel (7) and ignite a flash pellet
(6). The flash pellet flashes through a convex plate (5) into the heat
sensitive detonator (3), which initiates the booster (1).
If the projectile strikes at a flat angle, the split graze weights (15)
cam the primer carrier and primer into the firing pin.
2-14
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rSTC-CW-07-100--73
Fuze, base detonating, DBR-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
100-mm Gun M1944
130-mm Gun M-46
100-mm AP-T BR-412D
130-mm AP-T BR-482
REFERENCE
Picatinny Arsenal Memorandum Report 1022, dated July 1962.
2-15
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze base detonating, DBT
Neg. 511723
DISCUSSION
The DBT is a setback and spin-armed base detonating fuze used on the
152-mm concrete-piercing projectile model G-530. An out-of-line
detonator, as well as a graze sensitive feature, is included in the
internal components. During assembly the fuze is set for delayed
detonation. The selector can be rotated to instantaneous but once set,
it cannot be changed.
CHARACTERISTICS
Fuze Assembly?
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
(HET
Steel
1.024 in
Tetryl
Functional Data:
Arming method Spin and
setback
Firing method Impact
Safety devices Out-of-line
detonator
Arming distance
Arming time
Self-destruct time NA
Delay time
2-17
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FSTC-CW-07-100-73
Fuze base detonating, DBT
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, the pyrotechnic delay primer sets back against its spring
and is initiated by the fixed firing pin. The flash ignites a pyro-
technic safety pellet in the detonator slider housing. Burnout of this
pellet frees a spring-loaded plunger which had locked one slider detent
in place. Centrifugal force causes this detent and one on the opposite
side to release the slider to explosively align, where it is again locked
in place by the two detents. Simultaneously, centrifugal force removes two
detents from the flash pellet carrier. The carrier is now free to move and
the fuze is armed.
Upon impact, if instantaneous action was selected, the flash pellet carrier
is cammed forward by the inertia weight against the firing pin. The result-
ing flash escapes around the firing pin and through the center of the
selector housing directly to the heat sensitive detonator, the detonator
initiates the lead charge which in turn initiates the booster.
If the selector was set for a delay action, the selector blocks the
instantaneous port, the flash is diverted to the delay pellet in the
selector housing, which in turn initiates the lead charge and booster.
2-18
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FSTC-CW-07-100-73
Fuze, base detonating, DBT
WEAPONS AND PROJECTILES USED WITH
Weapons
Pr o j ectiles
152-mm Gun - Howitzer, D-20
REFERENCE
None
152-mm CP G-730
(No disassembled view available)
2-19
(Reverse Blank)
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Neg. 511724
DISCUSSION
The DK-2 is a setback armed impact
the PG-2 HEAT rocket. The fuze is
zag arming delay. The body is made
detonator.
CHARACTERISTICS
FSTC-CW-07-100-73
Fuze, base detonating, DK-2
fired base detonating fuze used in
graze sensitive and employs a zig-
of aluminum and contains an in-line
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.23 lb
PM-2
Aluminum
0.75 in
Tetryl
43.70 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct
Delay time
Setback
Impact
None
time ---- NA
Non-delay
2-21
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FSTC-CW-07-100-73
Fuze, base detonating, DK-2
II
2.7r
AH-2 3-533
Pi-- 1.1 3'
1 Neg. 511723
FUNCTIONING DESCRIPTION
Upon firing, the zigzag setback sleeve (3) moves to the rear against the
resistance of the setback spring (9) and the transverse plunger (4) riding
through the zigzag slot. Upon completion of setback, the sleeve is pushed
forward by the setback spring and the fuze is armed. On impact, the firing
pin assembly (8) moves forward against the anticreep spring (7) and
initiates the primer detonator (6). This in turn initiates the booster
(1) and main charge. If the round impacts at a slight angle, the graze
weight (5) moves laterally to cam the firing pin assembly into the primer
detonator.
(No disassembled view available)
2-22
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FSTC-CW-07-100-73
Fuze, base detonating, DK-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
40-mm Antitank grenade launcher
RPG-2
_
REFERENCE
None
40-mm HEAT Grenade (Rocket) PG-2
2-23
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, DK-4
DISCUSSION
The DK-4 base detonating fuze is an improved version of the DK-2. It is
setback armed and impact fired, and includes a self-destruct element
which is also used to provide an air burst capability. The fuze body
and most internal components are made of aluminum; the booster cup is
steel.
A pyrotechnic arming delay pellet prevents the setback sleeve delay pin
from moving inward until arming delay has occurred. Arming delay prevents
fuze arming unless setback and sustained acceleration have been applied to
CHARACTERISTICS
Fuze Assembly:
Functional Data:
Body material -------- Aluminum
Arming method Setback
Weight ----------------
0.16 lb
Firing method -------- Impact or
SD
Markings
g4-4
Safety devices None
Booster
Arming distance - - - ?
Body material
Steel
Arming time - - - ?
Body length -- - - -
1.050 in
Self-destruct time ---- 4.16 sec
Explosive
PETN
(average)
Explosive weight -----
63.50 gr
Delay time ----------- NA
2-25
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FSTC -CW-07 -100 -73
Fuze, base detonating, DK-4
the fuze. If acceleration ceases prior to burnput of the delay pellet,
the setback sleeve will move forward and be restrained by the delay pin,
preventing the housing from moving forward upon impact or self-destruct
functioning. This provides a positive safety for handling and firing.
.615
-?-I.125 DIA
2.540
1.975
-----;941 DIA
Neg . 511727
.948 DIA
.945 DiA
ALL DIMENSIONS IN INCHES
FUNCTIONING DESCRIPTION
Upon firing, setback forces cause the fuze arming sleeve (1) to compress
the main setback spring (2), releasing a spring-loaded detent (3) which
locks the arming sleeve (1) in place. A short delay is created by a
slotted arming pin (4) which rides in a zigzag slot in the arming sleeve
(1). Setback forces also initiate the self-destruct cycle, which starts
when the primer (5) depresses the self-destruct setback spring (6) and
strikes the primer firing pin (7). This fires the primer (5) which
flashes along the detent flash groove (8) and the delay flash hole (9).
At the end of the detent flash groove (8), the primer flash initiates a
black powder detent (10) which releases the spring-loaded arming pin (4)
arming the fuze. The primer flash through the delay flash hole initiates
the fuze delay (11). The fuze delay (11) burns for approximately 4
seconds and then fires a lead azide charge, which is located at the top
of the fuze delay (11), driving the fuze striker assembly (12) and firing
pin (13) into the detonator (14), which fires the booster (15) and
initiates the round. The fuze will also function on impact when the fuze
striker assembly (12) and firing pin (13) are driven into the detonator
(14), which fires the booster.
2-26
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PSTC-CW-07-100-73
Fuze, base detonating, DK-4
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
. 40-mm Antitank grenade launcher
RPG-2
40-mm HEAT grenade (Rocket) PG-2
SELF DMIRUCT SETBACK SPRING
FLASH GRCOVE BLACK POWDM DETEMI
PING PIN AND STRIKER ASSEMBLY
3 PAPER WASHERS
cararatoR RETAINING RING
3 PAPER WASHERS
COPPER DISK
FM BODY
ARMING SLEEVE
SETBACK SPRING
ARMING SLEEVE DETENC
ARMING PIN SPRING
ARMING PIN
BLACK PER DECENT
REFERENCE
USA Foreign Science and Technology Center Exploitation Report CR-20-8-68,
dated June 1968.
2-27
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, DR-5
(No photograph available)
DISCUSSION
The DR-5 is a graze sensitive, base detonating fuze with a self-
regulating delay and a tracer element. The fuze is armed by setback and
centrifugal force and has an out-of-line detonator.
Because of its complex design and manufacturing difficulties, it is
believed the fuze is no longer produced.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
Steel
Functional Data:
Arming method Setback
and spit
Firing method Out-of-line
detonator
Safety devices
Arming distance
Arming time
Delay time
2-29
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FSTC-CW-07-100-73
Puze, base detonating, DR-5
T-
DIA
TPI
DIA
10
11
12
13
14
15
licit. 511729
FUNCTIONING DESCRIPTION
Upon firing, the tracer (9) is ignited by the burning propellant. The
stirrup (6) sets back, overcoming the resistance of four offset claws on
the striker safety clamp (8). The latter then engages the striker (7).
Simultaneously the detent (13) sets back into a recess in the body of the
fuze, locking the centrifugal shutter (1) until the shell has left the
bore. Two centrifugal detents move free of the shutter while the shell
is still traveling through the bore of the gun. When the shell leaves the
bore, the centrifugal shutter is released and comes into the armed posi-
tion, in which the detonator (12) lies opposite the relay charge (11).
The striker is prevented from moving during the flight of the shell by
the anticreep spring (5). Upon impact, the striker and the stirrup move
forward, driving the firing pin (15) into the primer (4). The flash from
the primer passes to the powder delay element (14) by traveling along the
lateral grooves of the set forward valve (3). Impact inertia also forces
the set forward valve against the powder delay element; the gases generated
by the combustion of the delay composition, however, pass through grooves
on the front and sides of the set forward valve and escape from the
powder delay element casing (2), thereby providing an even pressure and a
normal rate of delay combustion. When the force of inertia exerted on the
set forward valve decreases until its intensity is less than that of the
2-30
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FSTC-CW-07-100-73
Fuze, base detonating, DR-5
pressure of the gases on the valve, the latter is forced rearward by the
gas pressure and closes the exit from the delay element casing. The gas
pressure in the casing is therefore sharply increased and the delay
element burns more rapidly. Its flame passes to the detonator whose
flash reaches the booster (10) by way of the relay charge. The force of
inertia decreases when the round has pierced the armor, and this insures
the automatic regulation of the delay for the perforation of any given
thickness of armor within the limits of the armor-piercing capacity of
the projectile.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
107-mm Corp guns M1910/30 and M1940
(M-60)
122-mm Corp guns M1931 and M1931/37
(A-19); Tank gun M1943 (D-25);
SP gun M1944 (D-258)
REFERENCE
None
107-mm AP-T BR-240
122-mm AP-T BR-471 & BR-4713
(No disassembled view available)
2-31
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, KTD and KTD-2
(No photograph available)
DISCUSSION
The KTD and KTD-2 are varable delay base fuzes that arm by setback and
centrifugal force. A delay selector on the base of the fuze may be set on
"II H" for transportation (Safe), "3" for delay or "0" for non-delay
action. These fuzes are nearly identical in design and function.
To improve the arming qualities at high muzzle and angular velocities,
the following modifications were made in the KTD: (a) The steel arming
rod has been replaced by an aluminum arming rod to reduce the rods weight
and friction; (b) a lead core was pressed into the center of the striker
to add weight and increase sensitivity; (c) To prevent gases from reaching
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
?
KTA Ed KT-2
Steel
?
Tetryl
?
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Out-of-line-
detonator
Arming distance ?
Arming time ?
Self-destruct time
Delay time ?
2-33
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FSTC-CW-07-100-73
Fuze, base detonating, KTD and KTD-2
the primer, an internal channel has replaced the groove formerly cut in
the surface of the selector rod. Fuzes which incorporated the above
changes were designated KTD-2 and are not employed in low velocity
projectiles because of poor arming qualities.
The KTD and KTD-2 are considered bore safe because of the out-of-line
detonator; should a premature function of the primer take place, the
shutter would be jammed in the out-of-line position.
Neg. 511730
40#1".4:;.
NW."'" 11,"le 11S=.4N
FUNCTIONING DESCRIPTION
Upon firing, the arming rod (10) is set back by inertia forces compress-
ing the arming rod spring (12). This aligns the recess in the arming rod
with the striker check ball (11) which falls into the recess and frees
the striker (8). The anticreep spring (6) prevents the striker from
moving forward against the primer (5). Upon deceleration of the projectile,
the arming rod spring decompresses, forcing the arming rod forward so that
the recess in the rod is opposite the shutter check ball (4). Centrifugal
force moves the shutter check ball into the recess in the rod and allows
the centrifugal shutter (2) to turn and align the detonator and relay
charge. Upon impact, inertia drives the striker and firing pin (7) into
the primer. If the selector is set for nondelay action "0", the flash
from the primer passes along a groove in the selector (13) and ignites the
detonator, which in turn initiates the relay charge and booster (1). When
the selector has been set for delay action "3", the groove in the setting
selector is turned 180' away from the primer (5) and the passage from the
primer to the detonator is closed. As a result, the flash from the primer
is transmitted to a delay element in the shutter, and then to the detonator,
the relay charge, and the booster.
2-34
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FSTC-CW-07-100-73
Fuze, base detonating, KTD and KTD -2
WEAPONS AND PROJECTILES USED WITH
Weapons
Fuze
Projectiles
203-mm Howitzer, M1931(B-4)
280-mm Mortar (Howitzer)
M1939 (BR-17)
122-mm Corps guns M1931
& M1931/37 (A-19) Tank
gun M1943 (D-25) SP gun
M1944 (D-25S)
152-mm Guns M1910/34 and M1935
Gun-howitzer, M1937 (ML-20)
Howitzer M1909/30 and
M1938 (M10) Tank-howitzer
M1938
REFERENCE
None
KTD
KTD
KTD -2
KTD -2
203-mm CP G-630
280-mm CP G-675
122-mm CP 0-471
152-mm CP 0-530, 0-540, G-545
(No disassembled view available)
2-35
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, MD-1, MD-2, MD-3, and MD-4
Neg. 511731
0.90" DIA.
16 TPI
1.14" DIA,
DISCUSSION
These are early model base detonating fuzes used in small caliber
projectiles. Little definite information is available; but, due to the
lack of safety features, they are believed to be obsolete.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.242 lb
(app)
NA
Steel
2.59 in
(app)
Functional Data:
Arming method
Firing method Safety devices
Arming distance
Arming time
Delay times
Setback
Impact
None
2-37
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FSTC.-C41.-47-1D-73
Fuze, base detonating, MD-1, M1Y-2, MD-3, and MD-4
FV.:NCTIONTM: DFSCRIITION.
Unknown.
(No line drawing available)
2-38
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Fuze, base detonating, MD-1, MD-2, MD-3, and MD-4
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Unknown
REFERENCE
None
Unknown
2-39
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FSTC-CW-07-100-73
Fuze, base detonating, MD-5 and MD-6
DISCUSSION cc II
The MD-5 is a base detonating fuze used in small caliber armor-piercing
projectiles. The fuze is of conventional design and includes a primer,
a delay pellet, a detonator, and a removable tracer. An initiator
(booster charge) is inserted separately in the projectile just prior to
use. The MD-6 is identical to the MD-5 except for slight differences in
external appearance and base thread size.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings - - - -- - - - -- - - rooster
Body material
Body length
Explosive ------ -- Explosive weight -- - -- -
Steel
0.26 lb !
MA75 & Mg70
NA
NA
NA
NA
Functional Data:
Arming method --------- Setback
Firing method - - - -- Impact
Safety devices -------- None
Arming distance - - - ?
Arming time - - - - - ?
Self-destruct time ---- NA
Delay time ----------
2-41
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FSTC-CW-07-100-73
Fuze, base detonating, MD-5 and MD-6
259
51YR.
ALTERNATE CONTOUR
FUNCTIONING DESCRIPTION
Upon firing, the tracer element (10) is ignited by the propellant gases
and is contained by a solid barrier in the fuze body. At the same time,
the stirrup (6) sets back and clamps itself to the primer carrier (8).
Upon impact, the stirrup and primer carrier set forward, driving the
primer (7) against the fixed firing pin (5). The primer emits a flame
through a channel (4) in the firing pin holder to ignite the delay pellet
(3), which in turn initiates the detonator (1).
2-42
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FSTC-CW-07-100-73
Fuze, base detonating, MD-5 and MD-6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
45-mm Antitank guns M1932, M1937
and M1942; Tank guns M1932 and
M1934
57-mm Antitank guns M1941 and M1943
(ZIS-22)
76-mm Guns M1902/30, M1933, M1936
(F-22) M1939 (USV), & M1942
(ZIS-3) Tank guns M1938/39
(L-11) and M1939 (F-32)
Howitzer M1927 and M1943
REFERENCE
None
45-mm AP-T BR-240, B-240
57-mm AP-T BR-271
76-mm AP-T BR-350, BR-350A, BR-361
2-43
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FSTC-CW-07-100-73
Fuze, base detonating, MD-7 and MD-8
Neg. 511736
DISCUSSION
The MD-7 and MD-8 are setback armed, base detonating fuzes used in
armor-piercing projectiles. They are similar in design and functioning
to the MD-5 and MD-6 with the exception of the addition of an anticreep
spring which affords additional safety from premature detonations. These
fuzes are designed to regulate the delay according to the thickness of
the target to be penetrated. The MD-8 may be used with or without a
tracer element.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.31 lb
MA-7 & M4-8
Functional Data:
Arming method Setback
Firing method Impact
Safety devices
None
distance
Arming
Steel
Arming time
1.04 in
Self-destruct time
Tetryl
Delay time
0.005 to
8.5 gr
0.015 sec
2-45
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FSTC-CW-07-100-73
Fuze, base detonating, MD-7 and MD-8
90 DIA.
16 TPI
133 DIA.
:/
-Nk,
emts
tikx, "fert4XV:
140 ?
Pme
r4=1 t-91
14Sla
?
1,0
2
6
7
8
9
10
FUNCTIONING DESCRIPTION
Upon firing, the tracer element (10) is ignited by propellant gases.
Simultaneously setback causes the stirrup (7) to move rearward, over-
riding the primer carrier (9). The primer carrier is then held to the
rear by the anticreep spring (6). Upon impact the primer carrier and
primer (8) move forward against the firing pin (5).
The primer flashes through a flash channel in the firing pin holder and
ignites a delay element (3). The set forward valve (4) moves forward by
inertia and remains in this position until penetration of the target has
been achieved. At this time gases produced by the delay element (3)
force the valve to the rear sealing the channel. This causes a rapid
increase in pressure, resulting in instantaneous consumption of the
delay element and initiation of the detonator (2) and booster (1).
2-46
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5111-7 arid 521-8
76-525
PT-76
85-555
50-85: & A
f225151 gun.
157
?& 5119L2
ssault
&11-T,
2 BR-350B
AP-T, BR-365, BR-365K
ER-5
20-15-70.
2-47
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DISCUSSION
FSTC-CW-07-100-73
Fuze, base detonating, 140-10
Neg. 511739
The MD-10 is a setback armed, impact fired fuze used in armor-piercing
projectiles. The fuze is of conventional design and includes a removable
tracer. The self-adjusting delay included in early models of this series
(MD-7 & MD-8) has been omitted from the MD-10. This fuze is interchangeable
with the MD-6 and MD-8.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.318 lb
Mg-10
Steel
1.06 in
Tetryl
0.45 gm
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Self-destruct time NA
Delay time
2-49
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FSTC-CW-07-100-73
Fuze, base detonating, MD-10
FUNCTIONING DESCRIPTION
Upon firing, the tracer element is ignited by the propellant gases. At
the same time, the stirrup (6) sets back and clamps to the primer carrier
(7). The fuze is now armed and the resistance of the anticreep spring (5)
prevents the primer carrier from moving forward. Upon impact, inertia
causes the primer carrier to overcome the resistance of the anticreep
spring and drive the primer into the fixed firing pin (4). Gases and
flame from the primer flash through a flash channel in the firing pin
to ignite the delay element (3), which, after a short delay, initiates
the detonator (2) and booster (1).
(No disassembled view available)
2-50
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FSTC-CW-07-100-73
ELIEEL base detonating, MD-10
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
57-mm A/T guns, 141941 and 141943
SIP gun (AA) ZSU-57-2
76-mm Division guns M1902/30
141933, 141936 (F-22), 141939
(USZ) and 141942 (ZIS-3)
Tank guns 141938/39 (L-11)
& 141939 (F-32)
85-mm AA guns, 141939, Tank guns
141943 (D-5T85) and 141944
(ZIS-S53) SP gun 141943
(D5-S85)
122-mm Corps guns 141931 & M1931/37
(A-19) Tank gun M1943 (D-25)
SP guns M1943 (D-25S) & 141944
(A-19S)
57-mm AP -T, BR-281
76-mm SP-T, BR-350B
85-mm AP-T, BR-365K, BR-365
122-mm AP-T, BR-471B
REFERENCE
Foreign Science & Technology Center Exploitation Report - FSTC-CR-20-137-68.
2-51
(Reverse Blank)
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DISCUSSION
FSTC-CW-07-100-73
Fuze, base detonating, MR-Z
Neg. 511741
The MR-Z is a setback armed, impact fired, base detonating fuze used
in large caliber concrete and armor-piercing projectiles.
The internal components include an out-of-line detonator which is aligned
by centrifugal force and a steel spring. A primary identification feature
is the heavy modified buttress thread for assembling the fuze to the
projectile.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive Explosive weight
Steel
0.15 lb
MP-3
Steel
NA
Tetryl
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time
Delay time
Setback
Impact
Out-of-line
detonator
NA
2-53
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FSTC-CW-07-100-73
Fuze, base detonating, MR-Z
Neg. 511742
FUNCTIONING DESCRIPTION
Upon firing, setback causes the arming sleeve (11) to move to the rear,
camming the legs of the stirrup (7) inward to engage the internal groove
in the arming sleeve, thus locking the sleeve to the firing pin assembly
(6). Simultaneously, a detent pin is moved to the rear by setback, free-
ing the rotor (9) which is aligned by centrifugal force and locked in the
armed position.
Upon impact, the firing pin assembly and arming sleeve are moved forward
by inertia, overcoming the resistance of the firing pin spring (5) and
initiating the primer detonator and booster.
(No disassembled view available)
2-54
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MC-CW-07-100-73
Fuze, base detonating, MR-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
130-mm field gun M1946
REFERENCE
130-mm APC BR-482, BR-4828
130-mm CP G-482
OTIA Evaluation Report 5552, Project 10-223-26, dated February 1960
(P.A. Memo Report No. 168)
2-55
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, 5DM
(No photograph available)
DISCUSSION
Information on the 5DM base detonating fuze is based entirely on
documentary sources, and is extremely limited. As other improved fuzes
are available, this design is considered obsolete.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
SAM
NA
NA
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time ---- NA
Delay time
Setback
Impact
2-57
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FSTC-CW-07-100-73
Fuze, base detonating, 51)/4
Neg. 51174)
FUNCTIONING DESCRIPTION
Upon firing, setback causes the stirrup (8) to shear the safety pin (10),
move rearward, and override the striker clip (9), which secures the stir-
up to the striker (12). Then only, the anticreep spring (7) prevents
forward movement of the striker. Upon impact with the target, inertia
causes the striker to overcome the anticreep spring and drive the firing
pin (11) forward into the primer (6). The primer emits a jet of flame
through a flash channel, igniting the delay element (5). When the delay
burns through, it ignites the powder charge (4) which forces the firing
pin (3) into the detonator (2). The detonator activates the booster
(1), which detonates the main charge.
(No disassembled view available)
2-58
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FSTC-CW-07-100-73
Fuze, base detonating, 5DM
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj ect iles
Not available
REFERENCE
None
2-59
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FSTC-CW-07-100-73
Fuze, base detonating, 5DT-2
(No photograph available)
DISCUSSION
The 5DT-2 is a setback armed, base detonating fuze used in large caliber
projectiles. Factual information is extremely limited and is based on
documentary sources. Because of its design complexity and safety hazards,
it is considered obsolete.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
5AT-2
NA
NA
Functional Data:
Arming method Setback
Firing method Impact
Safety devices
Arming distance
Arming time
Self-destruct
Delay time
time NA
2-61
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FSTC-Cw-07-100-73
Fuze, base detonating, 5DT-2
F
Neg. 511744
FUNCTIONING DESCRIPTION
On firing, the stirrup (12) sets back, overcomes the resistance of the
stirrup retaining spring (14), pushes the locking ball (8) into the
socket of the setting selector (10), and locks itself to the stirrup
retaining spring. On impact with the target, inertia causes the striker
(9) to overcome the anticreep spring (7) and drive the impact firing pin
(13) forward into the primer (6). The flash from the primer passes through
the powder delay pellet (11) to the powder magazine (5). Under the pressure
of the gases produced by the burning of the powder magazine, the detonator
firing pin (4) breaks through the brass disk (3) and pierces the detonator
(2). The resulting explosion detonates the booster (1).
(No disassembled view available)
2-62
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,t, .,1?, ,
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FSTC-CW-07-100-73
Fuze, base detonating, 5DT-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
203-mm Howitzer M1931 (B-4)
203-mm HE
F-620
280-mm Mortar(Howitzer)M1939
(BR-5)
280-mm HE
305-mm Howitzerl M1915
305-mm HE
REFERENCE
None
2-63
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, base detonating, 7DT
(No photograph available)
DISCUSSION
Information on the 7DT fuze is limited and unverified. The fuze appears
to be a conventional base detonating type and is reportedly used in
medium and large caliber naval and coastal artillery in both high
explosive and armor-piercing projectiles.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
-----
Explosive weight
Steel
74T
NA
NA
'?
Functional Data:
Arming method
Firing method - - - - - - -
Safety devices - - - -
Arming distance
Arming time
Self-destruct time - - - -
Delay time
Setback
Impact
NA
2-65
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1
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FSTC-CW-07-100-73
Fuze, base detonating, 7DT
DIA
WI
r DIA
Neg. 51170
FUNCTIONING DESCRIPTION
Upon firing, setback force causes the stirrup (3) to move rearward and
engage the detonator carrier (5). During flight the detonator carrier
is prevented from moving forward by the anticreep spring (1). On impact
with the target, inertia causes the stirrup and the attached detonator
carrier to move forward until the detonator (6), which is secured to the
detonator carrier, strikes the fixed firing pin (2). At this point, the
detonator is approximately in the center of the booster (4). The explosion
of the detonator initiates the booster, which activates the main charge of
the projectile.
(No disassembled view available)
2-66
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FSTC-CW-07-100-73
Fuze, base detonating, 7DT
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Not available.
REFERENCE
None
2-67
(Reverse Blank)
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DISCUSSION
The 10 DT is a setback-armed base detonating fuze that has an automatic
mechanism which enables it to function as either a nondelay or delay
action fuze without setting previous to firing. This feature enables
the fuze to detonate a projectile almost instantaneously upon encounter-
ing a thin-skinned target, or after a delay upon encountering a thick-
skinned target, thus allowing the time necessary to embed the projectile
in the target before detonation. The 10 DT, which is fired only in large
caliber weapons, differs slightly for each type weapon in which it is
used. This difference is necessitated by the difference in terminal
velocity, which dictates the tensile strength of the shutter wire (12)
that controls the action of the fuze. This fuze has not been recovered.
The preceding information was taken from open source publications.
CHARACTERISTICS
FSTC-CW-07-100-73
Fuze, base detonating, 1001
Neg. 511746
Fuze Assembly:
Functional Data:
Body material
Weight
Steel
Arming method
Firing method
Setback
Impact
Markings
104T
Safety devices
Safety clamp
Booster
Arming distance
Body material
NA
Arming time
Body length
NA
Self-destruct time ----
NA
Explosive
Delay time
Explosive weight
2-69
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FSTC-CW-07-100-73
Fuze, base detonating, 10DT
Neg. nvo
FUNCTIONING DESCRIPTION
On firing, the stirrup (8) sets back, cutting the shear pin (14). The
stirrup safety clamp (10) is crushed, and the stirrup remains to the
rear, fixed with the striker (11) as one piece. The striker, although
its forward movement is no longer prevented by the stirrup, is held to
the rear by the anticreep spring (7) until impact. On impact with a
thick-skinned target, the stirrup and striker move forward, carrying the
impact firing pin (9) into the primer (6). At the same time, the metal
shutter (13) cuts the shear wire (12), and sets forward to plug the
direct flash channel that leads to the black powder pellet (4). The
flash from the primer (6) ignites the delay pellet (5) which burns
through and ignites the black powder pellet. Gases from the burning black
powder pellet drive the detonator firing pin (3) into the detonator. The
detonator actuates the booster (1), which in turn explodes the projectile.
On impact with a thin-skinned target, the force of inertia' is not suf-
ficient for the metal shutter (13) to cut the shear wire (12) and plug
the direct flash channel to the black powder pellet (4). Therefore, the
primer flash is transmitted directly to the black powder pellet, bypass-
ing the delay pellet (5), so that the action of the fuze is accelerated.
DIA
14
2-70
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FSTC-CW-07-100-73
Fuze, base detonating, 10DT
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Not available.
REFERENCE
None
(No disassembled view available)
2-71
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FaajOaC0-07-100-73
Fuze base detonating, V-350
Nem, 511748
DISCUSSION
The V-350 is a spin and setback armed base detonating fuse used in
Soviet semi-armor piercing projectiles. The internal components include
a delay selector and an out-of-line rotor assembly. Markings stemmed in-
to the steel body include the model designation "B-350", date of man
facture and lot number.
CHARaSTBRIST1CS
Fuze Assembly:
Functional Data:
Body material ---
Steel
Arming method ---------
Spin and I
Weight
1.40 lb
setback
Marriage
M-350
Firing method ---------
Impact
Booster
Safety devices --------
Out-of-
Body material ---------
Steel
line
Body length -----------
1.02r in
detonator
Explosive -------------
Tetryl
Arming distance -------
?
Explosive weight
------
Arming time -----------
Self-destruct time ----
NA
Delay time ------------
5-71
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7n- h-hWei;0-10W-7
Lite bhse iietehatinci, V-350
t line dinit, Ln nvai 1 le
FUNliTiCUING DESCRIFICCN
Imricr ce firfnh, tne delan selector screw in the 5citie if the f05e rpiht
set t5r either 5ti1.cy 37 nehdelay acti5n. liphn f:rin,5, the weiiinthd rocrj4
c:eliy pellet heti. PheL agdim5t the nixed firing pin ahd in tritilted. The
fidith the :Armin& delay pellet Lgnites the Yotetr edfety al:ow-
ftg the recor ieiretr th un15cit tne rnthr.
cenipithgel faree rr,c5p:eteh the -trminit zvele 51.rnirh, detnratrr
r51er tt the in :Arai pesititia wdere ft is leckhd in plate ny two Jiitents.
2-7z.
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FSTC-CW-07-100-75
Fuze, base detonating, V-350
Centrifugal force also removes three detents from the flash pellet carrier
and a small copper cup leading from the delay pellet to the nondelay flash
pellet (when the nondelay mode is selected).
Upon impact, depending on the delay selected, the inertia firing pin
impinges on, and ignites either the delay or nondelay pellet, which
initiates the primer detonator, booster and main charge. (Regardless of
the setting, the delay pellet is always activated).
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
130-mm Gun, M58 Coastal
130-mm SAP P3-42
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD).
2-75
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FSTC-CW-07-100-75
Section II.
PEOPLE'S REPUBLIC OF CHINA
1. Introduction
a. Chinese Communist base detonating fuzes are exact copies of
their Soviet counterparts. In many instances it appears that the PRC
fuzes were made on the same machines that produced the Soviet fuzes.
The only differences noted were in the marking of the fuzes. For this
reason all general remarks made on Soviet base detonating fuzes are
equally applicable to the PRC fuzes.
b. Since the PRC munitions industry has displayed the ability
to produce quality explosive ordnance from indigenous designs, new
base detonating fuzes are expected to appear. However, Soviet munitions
design philosophies will continue to be employed as standard guides.
2-77
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Fuze, base detonating, Type 2 (Artillery)
Chicom
DISCUSSION
The PRC base detonating fuze Type 2 is very similar to the Soviet DBR-2
fuze except for paint and markings. Some sealing elements employed by
the Soviets have been eliminated in the PRC copy.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.82 lb
Steel
1.42 in
Tetryl
26.70 gr
Functional Data:
Arming method Setback &
centrifugal
force
Firing method Impact
Safety devices Centrifugal
detents
Arming distance
Arming time
Self-destruct time NA
Delay time Self regulat-
ing
2-79
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Fuze, base detonating, Type 2 (Artillery)
Chic ow
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Soviet DBR-2 fuze.
(No disassembled view available)
2-80
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Fuze base detonating, Type 2 (Artillery)
Chicom
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj e ct il es
85-mm Field gun type ?
85-mm APC-T Type 367
REFERENCE
US Army FSTC Exploitation Report FSTC -CR-20 -55 -70.
2-81
(Reverse Blank)
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DISCUSSION
Th ase detonating
a ?direct copy at
TSTC-CO-07-10047.0
CTERISTIOS
'Fame ?Assembly:
Body material -
Weight
hatkiligs
taster
Body material.
Body length ---
Explosive ---
Explosive weight -
sed in the PRO Type 50 4
nEAt 55-2 faze used it the
a
HEAT Grenad
EAT grenade
EAT grenade.
etback
S.aietv devices ---
Arm tante ---
- 2 A rmlng time
- Tetryl
2-83
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Fuze base detonating, Type 2, (PG-2 HEAT Grenade)
Chicom
.94
1.05
'3'
1
2.52
SPRING,CREEP
PZ41:LI9
PM
HOUSING
WEIGHT,
COUNTER
PRIMER
CUP, mms
TRMER
NUT, PRIMER RETAINER
1.12 Nn. 511752
FUNCTIONING DESCRIPTION
Identical to the Soviet DK-2 fuze.
2-84
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CUP BOOSTER
SLEEVE, SETBACK
SPRING, SLEEVE
SPACER LOCK
HOUSING, PIN GUIDE
CAP
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FSTC-CW-07-100-73
Fuze, base detonating, Type 2, (PG-2 HEAT Grenade)
Chicom
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
40/80-mm Type 56 grenade
launcher
40/80-mm HEAT grenade Type 50
SPRING, CREEP
SPRING, SLEEVE
SETBACK SLEEVE
HOUSING
REFERENCE
None
2-85
(Reverse Blank)
BOOSTER CUP
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Section III.
OTHER EURASIAN COMMUNIST COUNTRIES
1.
Introduction
a.
countries
limited.
of Soviet
b.
Vietnam.
The capability of most of the small Eurasian Communist
to develop and produce indigenous designed ordnance is
For this reason they are usually satisfied to produce copies
fuzes.
An exception is the powder train time fuze produced by North
This fuze is a crude but effective device to produce an air
burst mortar round.
, c. The DC-1 base detonating fuze produced by Poland is another
exception.
2-87
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Fuze, base detonating, Type 2 (PG-2 HEAT grenade)
North Korean
(No photograph available)
DISCUSSION
This fuze is a copy of the Soviet DK-2 and the PRC Type 2 fuzes employed
in the PG-2 HEAT grenade. The major difference between the copies is in
body material. The Soviet and PRC version are manufactured from aluminum,
while the North Korean version employs cadmium plated steel.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.23 lb
Aluminum
0.75 in
Tetryl
43.70 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time Delay time
Setback
Impact
None
NA
Nondelay
2-89
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Fuze, base detonating, Type 2 (PG-2 HEAT grenade)
North Korean
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Soviet DK-2 fuze.
(No disassembled view available)
2-90
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Fuze, base detonating, Type 2 (PG-2 HEAT grenade)
North Korean
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
40/80-mm rocket, RPG -2
REFERENCE
None
40/80-mm HEAT grenade, PG-2
2-91
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Fuze, base detonating (B-50 HEAT grenade)
North Vietnam
(No photograph available)
DISCUSSION
The fuze employed in the North Vietnamese type 8-50 HEAT grenade is
integral to the grenade and therefore has no separate model designation.
The fuze employs an in-line detonator with a jump-out pin to provide
safety prior to firing.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
NA
NA
Aluminum
NA
Tetryl
243.4 gr
Functional Data:
Arming method --------- Jump-out
pin
Firing method Impact
Safety devices Jump-out
pin
Arming distance
Arming time
Self-destruct time NA
Delay time NA
2-93
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Fuze, base detonating (B-50 HEAT grenade)
North Vietnam
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, setback moves the fin assembly to the rear, shearing a pin
and releasing the jump-out pin. The jump-out pin is expelled by its
spring and the fuze is armed.
Upon impact, the inertial firing pin overcomes the resistance of the
firing pin spring and initiates the primer detonator and booster.
2-94
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Fuze, base detonating (B-50 HEAT grenade)
North Vietnam
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
50/100-mm NVA/VC Grenade
Launcher, B-50
RETAINER BOOSTER ROI
CUP BOOSTER
CASKET
RETAINER DETONATOR
OETONATEIR
50/100-mm HEAT Grenade, B-50
WASIICO
POKING
SIMKO ----At
HORSING STRIKER
SPAM SAFETY .Naim
RN SAFETY
REFERENCE e9 fl1,4
US Army FSTC Exploitation Report CR-20-117-68, dated April 1969.
2-95
(Reverse Blank)
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Fuze, base detonating, DC-1
Poland
(No photograph available)
DISCUSSION
The DC-1 rifle grenade fuze is armed by gas pressure and setback. Non-
delay function is initiated on impact with the target or by the graze
weights in case of a ricochet or low angle impact.
The fuze body is a machined steel cylinder sealed at each end.
unarmed condition all arming components are interlocked pending
receipt of setback and gas pressure from the propelling charge.
CHARACTERISTICS
In the
the
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.12 lb
329 DC-1
Functional Data:
Arming method -----
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time
Delay time
Gas pres-
sure
Impact
Coiled
spring
Nondelay
2-97
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Fuze, base detonating, DC-1
Poland
.13
1 27
.56
.30
Neg. 511755
.25 DIA
84 DIA
.94 DIA
94 DIA
34 WI
14
FUNCTIONING DESCRIPTION
Upon firing, gas pressure from the propelling charge forces the
diaphragm (14) and lower piston (8) forward against the upper arming
piston (6). The upper piston bends the safety wire (12) inward causing
the ends of the wire to unblock the setback weights (5). The upper and
lower pistons are now disengaged allowing free lateral movement of the
graze weight (7). When the safety wire clears the setback weights, set-
back forces the weight to the rear releasing the flat coiled spring (4)
which expands into the fuze cavity. The fuze is now armed.
Upon impact, the inertia weight (11) compresses the anticreep spring (10)
and the firing pin (9) initiates the primer (1). If the rocket impacts at
a flat angle the graze weights (7) will move laterally to cam the inertia
weight and firing pin forward to initiate the primer and explosive train.
(No disassembled view available)
2-98
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Fuze, base detonating, DC-1
Poland
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
REFERENCE
None
Grenade, Rifle, HEAT PGN-60
Grenade, Rifle, Frag F-IN-60
2-99
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F3TC-CW-07-1k.. 73
Feint Detcmnating Fuzes?
3-1
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Section I.
USSR
1. Introduction
a. Soviet artillery fuzes are of conventional design and function
on accepted mechanical and explosive principles. Point detonating fuzes
are constructed from a wide range of materials. The major proportion of
Soviet fuzes have steel components and are exceedingly robust in design.
All point detonating fuzes incorporating selective instantaneous and delay
features are made of steel and are designed to remain intact and in line
even though the fuze may impact against a solid target. Fuzes employed
in point initiating base detonating modes are normally made of aluminum.
This material has proven sufficiently rigid to maintain high explosive
antitank projectiles at a proper standoff for maximum penetration. Many
fuzes which function instantaneously are being constructed of plastic.
Since these fuzes are not required to withstand impact stresses, a
molded plastic offers an economical medium from which to mass produce
fuze bodies.
b. Poine detonating fuzes are generally equipped with a removable
nose cap. For instantaneous fuze action, the cap is removed before
firing. If a slight delay is desired (nondelay) the fuze is fired with
the cap in place. Soviet fuze terminology defines a delay fuze as one
whose functioning delay is 0.01 second or greater. The United States
definition is 0.02 second or greater,
c. Soviet fuzes may be found with either black powder or non-
gaseous delay elements; however, black powder has apparently been
abandoned as being inconsistent with their environment-proof munition
design philosophy and has been replaced by gasless compounds in new
production items.
d. Soviet fuze markings are die-stamped into fuze bodies on (or
near) the greatest diameter. The markings normally consist of a single
line of Cyrillic letters and Arabic numbers. The line of markings is
separated by dashes into groups which identify the manufacturing plant,
fuze designation, lot number and year of manufacture. These markings are
sometimes found at random locations and may be stenciled rather than
die-stamped.
3-3
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e. Certain fuzes have different colored nose caps or colored
bands around the membrane caps. These markings are apparently employed
to identify fuzes which are identical in appearance, but which have
different functioning action. Where the color coding is known, it is
explained in the text.
f. The Soviets have adopted the principle of dual fuze action in
their point detonating fuzes. This design utilizes the principle of
forcing a firing pin rearward upon impact, while simultaneously, the
primer-detonator moves forward by inertia. To increase the sensitivity
of inertial actuated primer-detonator carriers, graze-sensitive cam
weights are employed to cam the carrier forward on impact at flat
angles.
g. The Soviets use two words interchangeably for "fuze." One word
is "trubka"; the other is "vzryvated." The fuzes are classified either as
"igniferous" or "detonating." Ingiferous fuzes contain low explosive and
serve as initiators to produce functioning of expelling charges, detonators
and detonator-burster combinations. "Detonating" fuzes contain a stab
sensitive detonator, a detonator-booster assembly and are intended to
initiate direct functioning only in high explosive fragmentation or high
explosive armor piercing ammunition.
h. The two major Soviet fuze classifications are further sub-
divided into classes that are directly comparable to their American
counterparts. These classes are point detonating fuzes and base detona-
ting fuzes. The type of functioning action is a basis for a further
division into impact, combination time and impact, time and proximity
fuzes. Fuze of the impact type are armed by setback, centrifugal force,
or a combination of both, and function by direct action upon impact with
a target. Some incorporate selective instantaneous or delay features.
i. The degree of safety in handling and firing forms the basis of
an additional Soviet fuze classification. "Unsecured" fuzes are unsafe
in handling or firing. In this class, the primer and detonator are not
shielded or separated from the booster. "Semisecure" fuzes are safe for
transport, but are not detonator safe. In this class the primer is
isolated from the detonator, but the detonator has free access to the
booster. Safe fuzes are both bore and detonator safe.
3-4
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Tbe AD-N is: a setback. armed,
ft= dn old French dbaigii,
debripti= are siimiier for
fun es des
Cap f .
-faeo of the
3-5
Arming g
Seli-destr
Delay time ----------
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instantaneous
end nondeldd
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rife, point detonating, MD-N.
swim
Ftnniihtine DEangieijell
Upon. fixing, the stirrup sets hark, overriding the. primer carrier and
compressing the stirrup. safety spring. The stirrup clips engage the
inner surface. of the stirrup, locking tho stirrup. and primer holder
togethsr, Simultaneously the. primer holder sets back, flint*/ pressing
the read gas ensile ring agbinst the These plug, thus preventing accidental
ignition of the detonator by the primer while the. projSetile is in the
gun; tithe,
Deceleration. alloys the. stirrup safety spring to move: the stirrup and
primer holder forward :directly beneath the firing. pin,
Upon impact, safety cap censored, the striker and. firing pin are driven
ta the rear initiating the primer and ib curb. the; detonator and booster.
A nondelay detonation is; achieved by leaving the safety cap in place,
inertia then C,IAIS0,8 the primer bolder and 'primer to move forward against;
the firing pin initiating the primer, detonator and bossier,
3-6
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Fuze point detonating, AD-N
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm Gun, 141902/30, 141936 (F-22),
M1939 (USV), M1942 (ZIS-3) and
1927 Tank Gun M1927/32
152-mm Howitzer, 141909/30
REFERENCE
None
76-mm HE, F -354F
152-mm HE, F-533F
(No disassembled view available)
3-7
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DKZ--
4pih stabilleA
cchs tftfete )11
be?
re:71?..vecl)
'rm. rig L
Sol --des truc
nv
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016-0 . 05 5
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Fuze, point detonating, DKZ-V
action the flash from the detonator is directed through the flash channel
to the relay detonator. The long delay mode directs the detonator flash
to two long delay elements. When the short delay mode is selected, the
detonator flash is directed to both long delay elements and the short
delay element. A redundant initiation is provided for both short and long
delay modes.
The UKZ-V is longer, more streamlined and heavier than most standard Soviet
fuzes. Most of those recovered, have had all identification markings
removed except the lot number and delay settings. The entire fuze body
with the exception of the plastic portion has a coating of varnish, the
plastic coated base may be found painted blue or black with blue predomi-
nating.
5.50
2.52 DIA
1.77 DIA
13 TPI
Neg. 511759
FUNCTIONING DESCRIPTION
Upon firing, setback moves the zigzag arming sleeve (6) to the rear
against the resistance of the setback spring and the guide pin moving
through the zigzag slot. When the arming sleeve reaches the end of its
travel, two levers (28) are cammed inward, releasing the lock ball (7).
The spring loaded arming primer (10), propelled by its spring (8)
impinges on the fixed firing pin (12) initiating the primer which
flashes through the flash holes in the firing pin housing and ignites
the relay pellet (13). The relay pellet ignites the delay arming
17
30
22
23
24
25
26
27
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
3-10
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Fuze, point detonating, DKZ-V
pellet. Simultaneously, setback and acceleration move the weight (29)
to the rear, partially unlocking the rotor (17). When the delay arming
pellet (14) has burned out, the rotor locking detent is cammed into the
cavity by the turning rotor (25). The fuze is now armed.
Upon impact, the nose is crushed and the firing pin (5) driven into the
detonator. Dependent on the delay action selected, the applicable delay
flashes to the relay detonator (20) and the booster (21).
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Rocket DKZ-66
REFERENCE
122-mm HE-PE Frag 9M22M
(No disassembled view available)
FSTC Exploitation Reports, FSTC-CR-20-97-68 and KSTC-CR-20-33-70
3-11
(Reverse Blank)
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Fuze, point detonating, MC-2
DISCUSSION Neg. 511760
The GK-2 is a graze sensitive, setback armed, impact fired fuze used in
both HE and HEAT projectiles. The fuze is similar in construction and
function to the GK-1 with the exception of the zigzag arming delay which
appears to have been modified to increase the safe arming distance. The
fuze is streamlined in appearance, and is unpainted. It contains one
spanner wrench hole near the base. A steel cap that protects the nose
during shipment and handling is removed prior to firing.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.39 lb
FR-2
Aluminum
0.5 in
Tetryl
0.38 gm
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Self-destruct time None
Delay time Instantaneous
3-13
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FSTC-CW-07-100-73
Fuze, point detonating, GK-2
FUNCTIONING DESCRIPTION
Upon firing, setback farces the zigzag setback sleeve
releasing the sleeve retaining ball (14) which falls
cavity (5). As setback decreases, the sleeve spring
the sleeve (15) forward to the head of the firing pin
releasing the four retaining balls (6), allowing them
fuze body cavity (5). The fuze is now armed, and the
held away from the primer detonator (9) by the firing
On impact, the plunger (2) drives the firing pin (7)
detonator which initiates the booster (18). If the f
target at a slight angle, the graze weights (10) will
detonator forward into the firing pin.
(No disassembled view available)
3-14
(15) to the rear,
into the fuze body
(4) expands moving
assembly (13), and
to drop into the
firing pin (7) is
pin spring (17).
into the primer
uze strikes the
cam the primer
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Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
FSTC-CW-07-100-73
Fuze, point detonating, GK-2
DISCUSSION Neg. 511760
The GK-2 is a graze sensitive, setback armed, impact fired fuze used in
both HE and HEAT projectiles. The fuze is similar in construction and
function to the GK-1 with the exception of the zigzag arming delay which
appears to have been modified to increase the safe arming distance. The
fuze is streamlined in appearanCe, and is unpainted. It contains one
spanner wrench hole near the base. A steel cap that protects the nose
during shipment and handling is removed prior to firing.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.39 lb
FK-2
Aluminum
0.5 in
Tetryl
0.38 gm
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback
Impact
None
Self-destruct time None
Delay time Instantaneous
3-13
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FSTC-CW-07-100-73
Fuze, point detonating, GK-2
FUNCTIONING DESCRIPTION
Upon firing, setback forces the zigzag setback sleeve (15) to the rear,
releasing the sleeve retaining ball (14) which falls into the fuze body
cavity (5). As setback decreases, the sleeve spring (4) expands moving
the sleeve (15) forward to the head of the firing pin assembly (13), and
releasing the four retaining balls (6), allowing them to drop into the
fuze body cavity (5). The fuze is now armed, and the firing pin (7) is
held away from the primer detonator (9) by the firing pin spring (17).
On impact, the plunger (2) drives the firing pin (7) into the primer
detonator which initiates the booster (18). If the fuze strikes the
target at a slight angle, the graze weights (10) will cam the primer
detonator forward into the firing pin.
(No disassembled view available)
3-14
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FSTC-CW-07-100-73
Fuze, point detonating, GK-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm Rocket launcher SPG-82
82-mm Recoilless gun 8-10-82
107-mm Recoilless gun 3-11
REFERENCE
82-mm HEAT GK-662
82-mm Frag, 0-881A
82-mm HEAT, BK-881
107-mm Frag -HE, OF-883A
107-mm HEAT, BK-883
Exploitation Report, FSTC-CR-20-82-66, March 1966
3-15
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, GK-2M
DISCUSSION
The GK-2M is a graze sensitive, setback armed impact fuze used in both
HE and HEAT projectiles. The fuze is similar in construction and
function to the GK-2 but has been modified internally to facilitate
manufacture and improve graze sensitivity. The modified design of the
striker, firing pin and nose section allow these components to cam the
firing pin into the primer over a wider range of impact angles.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.39 lb
FH-2M
Brass
0.46 in
PETN
0.38 gm
Tunctional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback
Impact
None
Self-destruct time None
Delay time Instantaneous
3-17
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ESIC-GN-07-100-73
Fuze, point detonating, UK-2M
i
3 BO
4 79
\\ -
2FNCTIONT34(3 DESOkIPTION
Upan firinga setback. forces the zigzag setback sleeve (A) to the rear,
releasing the sleeve retaining ball (3) which falls into the fuze body
cavity (5), As setback decreases, the sleeve. spring (F) expands moving
the. sinew)). (4) forward to the heed of the firing pin assembly (2), and.
releafieg. the fent retaining belie (6), allowing them. te dttp into the
fuze body. sayitn (5)) The faze It uourardtd, and the. firing Ole. (2) it
held away Iron the primer detonator (7) by the firing pin spring (1.0).
On impact, the. plunger (1) drive the firing pin (2) intoo, the primer
detonator which initiate8 the booster (d), If the fez .:t striket the
target ate slight angle, the graze weights will cam the primer detonator
forward into the firing pini
1/-18
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FSTC-CW-07-100-73
Fuze, point detonating, GK-2M
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm Recoilless gun 3-10
107-mm Recoilless gun B-11
82-mm Frag,
82-mm HEAT,
107-mm Frag
107-mm HEAT
HE, 0-881A
BK-881
, HE, OF-883A
, BK-883
REFERENCE
Picatinny Arsenal Technical Memo No. 1359
FSTC Exploitation Report CR-20-155-68
3-19
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, GVMZ and GVMZ-1
DISCUSSION
The GVMZ and GVMZ-1 are point detonating, pneumatic fired fuzes with
selectable delay time. The fuze operates on the "air column" principle
of generating heat by the rapid compression of air in the air column to
ignite the primer. The delay selector can be set on instantaneous "0"
or delay "3".
CHARACTERISTICS
'Fuze Assembly:
Body material
, Weight
Steel
0.946 lb
-Functional Data:
Arming method
Firing method
None
Impact
Markings
F BM3-1
(pneumatic)
!Booster
Safety devices
Shipping cap
! Body material
Steel
Arming distance
NA
! Body length
1.05 in
Arming time
NA
1 Explosive
Tetryl
Self-destruct time ---
None
Explosive weight
14.74 gm
Delay time
Instantaneous
or 0.05 -
0.09 sec
3-21
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FSTC-CW-07 -100 -73
Fuze, point detonating, GVMZ and GVMZ -1
2.06
3.84
10
11
FUNCTIONING DESCRIPTION
Prior to placing the round in the weapon the safety cap (1) is removed.
On firing, no movement of the component parts of the fuze takes place
until the projectile strikes the ground. Upon impact, when the fuze is
set for instantaneous action, the nose bushing and diaphragm (3) are
driven inward, and in turn, drive the compression plug (2) rearward,
compressing the air in the air column (4) to a point where sufficient
heat is generated to ignite the black powder initiating pellet (5). The
flame jet travels down the flash channel (7), through the traverse hole
in the setting selector (6), and sets off the detonator pellet (8),
which detonates the booster (9). When set for delay action, the flame
jet travels through a longitudinally drilled hole in the setting
selector (6), down the delay channel (10) to the delay pellet (11), and
sets off the detonator pellet (8), which in turn detonates the booster
(9).
3-22
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FsTC-CW-07-100-73
Fuze, point detonating, GVMZ and GVM2-1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
120-mm Mortar, M1938 & M1943
REFERENCE
None
120-mm Frag-HE, OF-843A
Frag-HE, OF-843
Smoke, D-843A
(No disassembled view available)
3-23
(Reverse Blank)
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fein-lie-07-100-73
ENF9., F01.OF detonotieg, 0vmz_7
cHc?INC, AP 00 tAL.r)te INC
DISCUSSION
The .m2-7., is g paint detonating setback. armed, pneumatic Hien fuze,
with selectable delay timed This fuig differs. from the OVNO-1. in than
setback is enquired for. arming, An egged shaTed shipping cover with a
knurled ring pcetecte the .31.1e ptiot to fititg, an additional safety.
cep is aecutea to the Acne of the fuze by a. salety wire. bath cans are
rnwrved prier to firing. There are. tom wretch flats an the rim of the
fuge. 'body. Threads on tne bedy at abeve the tid secuxe the shippigg
eeveT. inc' ependitand licnted. 90' Apart ded at 1je3bt angle5. tp the fuze
bOdY .01-1taifl the delay selectcr switch, the. slider locking pin, and the
idckitlg in en.Arge-
CHAThm:TE.HISTTC.S.
'Fuze lasseeM7n7C--
Punerienal Data:
needy materiel ---
Steel :
Acting method -----mom
Setback:
Weight ----------------
1.0e in
Fering method.
Impact
7BM1-7
(pneumatic)
Boaster
1
Safety devices ---
Shipping cap
gain material.
Steel
Arming distance ------
2
goey length. -----------
1,1 in
Arwgeg time. --.--------
Exelogieg
Self-destruct time ---
None
Emplegene weight ------
14.74 gm
Delay. time --.---------
Inetantnneee
or Od05 -
0.09 sec
3-25
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FSTC-CW-07-100-73
Fuze, point detonating, CVMZ-7
11
1.57" DIA
1.41"DIA
10 TN
Neg. 511768
FUNCTIONING DESCRIPTION
Upon firing, setback causes the firing pin (8) to be driven into the
safety powder pellet (10). The flame from the safety powder pellet
passes through the grooves in the firing pin and ignites the black
powder detent pellet (3). When the pellet is consumed, the detent moves
outward and allows the interrupter (7) to move outward through either
one or both flash channels, depending on the setting.

4
On impack with the target, the piston (1) is driven rearward compressing
the air which ignites the primer (6). The flash from the primer then
passes directly to the detonator (14) via the instantaneous flash
channel (9), or to the delay pellet (13), depending on the setting of
the setting selector (11). Setting "3" allows the flash from the primer
to ignite the delay pellet (13) which activates the detonator (14), and
in turn the booster (4). Setting "0" allows the interrupter to move over
far enough to uncover both flash channels so that the flash from the
primer will pass directly to the detonator (14) and booster (4), resulting
in instantaneous action.
3-26
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Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
FSTC-CW-07-100-73
Fuze, point detonating, GUMZ-7
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
107-mm Mortar, M1938
120-mm Mortar, M1938 & M1943
122-mm Howitzer, M1938
152-mm Howitzer, M1938 & M1943
160-mm Mortar, M1943 & M1960
REFERENCE
107-mm Frag-HE---0E-841A
120-mm Frag-HE---0E-843
HE--- F-843
122-mm Frag---0-462A
152-mm Frag-HE---0E-534G
OF-534AG
160-mm 1-IE--F-852
(No disassembled view available)
FSTC Exploitation Report CR-20-14-72 dated February 1972
3-27
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, IPK-2
(No photograph available)
DISCUSSION
The IPK-2 is a graze sensitive, centrifugal armed, point detonating fuze
with selectable delay or nondelay action. The fuze has not been
recovered for examination, therefore, the following information has been
extracted from Soviet literature. Boresafety is maintained by the use
of a flat coiled spring and five centrifugal detents which immobilize
the firing pin and primer carrier until the round has traveled approxi-
mately 100 meters beyond the gun tube. This fuze is considered obsolete.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
14414-2
Steel
Tetryl
40 gm
Functional Data:
Arming method Centrifugal
force
Firing method Impact
Safety devices Centrifugal
detents
Arming distance 100 meters
Arming time
Self-destruct time NA
Delay time
3-29
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FSTC-00-07-100-73
Fuze, point detonating, IPK-2
I I7" CIA
2
4
6
S
IC
FUNCTIONING DESCRIPTION
Prior to firing, the delay selector (8) is turned to either delay or
nondelay. Upon firing, a flat coiled spring (3) is released and uncoiled,
allowing centrifugal force to displace the five centrifugal detents (2),
and clearing the firing pin. Upon flat impact the firing pin (1) is
driven to the rear impinging on the primer (6). If the projectile impacts
at an angle smaller than 75 degrees, the primer carrier carries the
primer forward to strike the firing pin, and the flash from the primer
is routed direct to the detonator and booster (11), or through the delay
element to the booster, depending on the position of the delay selector.
(No disassembled view available)
3-30
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FSTC-CW-07-100-73
Fuze, point detonating, IPK-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Same as the RGM.luze
REFERENCE
None
Same as the RGM fuze
3-31
(Reverse Blank)
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DISCUSSION
The KT-1 is a setback armed impact fired fuze which provides instantane-
ous, short and long delay functioning time, depending on the presence or
absence of a delay pellet and the fuze cap. Fuzes containing the delay
pellet are painted black, those without the pellet are painted light
gray. The KT-2 and KT-3 fuzes are identical in construction and
functioning to the KT-1 except for having smaller diameter base threads
designed to screw into a booster cup in the projectile. The KT-1, KT-2,
and KT-3 series fuzes are considered obsolete.
FSTC-CW-07-100-73
Fuze, point detonating, KT-1
CHARACTERISTICS
!Fuze Assembly:
' Body material
Weight
, Markings
'Booster
Body material
I Body length
Explosive
IExplosive weight
Steel
0.814 lb
HT-1
Steel
1.19 in
Tetryl
127 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback
Impact
None
Self-destruct time None
Delay time Instantaneous
and delay
3-33
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FSTC-CW-07-100-73
Fuze, point detonating, KT-1
1.60" DIA
1.42" DIA
10 TPI
FUNCTIONING DESCRIPTION
When the KT-1 fuze is set for instantaneous action (nose cap removed),
the fuze functions as follows: Setback causes the stirrup (7) to compress
the spring (6), and then override and lock itself to the primer carrier
(8). The primer carrier is also set back and compresses sealing washer
(9) over the vent in the body, shielding the detonator (11) from the
primer (5) should premature ignition occur. The striker (1) and firing
pin (3) are also set back, but the firing pin does not reach the primer.
After the projectile leaves the bore, the spring (6) raises the primer
carrier (8) and stirrup (7) to a position directly under the firing pin
(3). At the same time the spring (2) returns the firing pin (3) and the
striker (1) to their original positions. On impact, the striker (1) is
driven rearward, forcing the firing pin (3) into the primer (5) which
successively sets off the primer, the detonator (11), and the booster
(12). When the fuze is set for delayed action (nose cap in place), the
action is identical to that of instantaneous action except that on impact
the cap prevents the striker (1) and firing pin (3) from being driven
rearward. At the same time, inertia drives the primer carrier (8) forward,
forcing open the segmented safety shutter (4) and driving the primer (5)
against the firing pin to activate the explosive train.
3-34
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FSTC-CW-07-100-73
Fuze, point detonating, KT-1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
45-mm Antitank gun M1932,
141942
141937
&
45-mm Frag 0-240, 0-240A, 0-24014
57-mm Antitank gun 141943
& 141941
57-mm Frag 0-271, 0-2711J
76-mm Gun, 141942
Tank Gun D-56T
76-mm Frag-HE OF-343, OF-350A,
Smoke D-350A
REFERENCE
None
(No disassembled view available)
3-35
(Reverse Blank)
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FSTC6CW-07-100-13
Fuze, point: detonating, KTM-1
DISCUSSION
;be KIN-1 is a setback armed, impact fired ruse used with 85-mm, 57-mm,
and 85-mm projectiles. It is capable of instantaneous, short and long
delay firing time depending on the fuze color and use of the fuze cap,
The 87M-2 and ?KIM-3 are identical in design and functioning to the FIM-1
but differ in tread size. The fare may be found with the following
color combinations. Body and cap painted green; tin plated body with
red nose; body and cap painted black; unpainted steel body with red cap.
The KTM-1U and KIM-I are identical, with two exceptions:
CHARACTERISTICS
[Fuze Assembly:
/ Body material
Markings -------
Booster
Body material -----
Body length -------------
Explosiie
Explosive weight --------
[Functional Data:
Steel I Arming method -------- Setback
0.77 lbl Firing method -------- Impact
181701 Safety devices ------- None
Arming distance ------
Steel Arming time -----
1.19 in Self-destruct time --- None
7etryl Delay time ----------- Instantaneous
126 gr and delay
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FSTC-CW-07-100-73
Fuze, point detonating, KTM-1
a. The two-piece firing pin holder has been replaced by a one-piece
plastic holder.
b. The detonator cap is steel rather than copper, and the explosive
composition varies slightly.
157 DIA.
142 DIA.
10 TPI
FUNCTIONING DESCRIPTION
On firing, the arming sleeve (5) is set back, compresses the arming
sleeve spring (7), overrides the stirrup (6), and locks itself to the
primer holder assembly (8). The lower end of the primer holder assembly
holds the aluminum sealing cushion (9) over the vent in the, fuze body,
shielding the detonator (11) from the primer (4), should accidental
ignition occur. The striker and the firing pin (2) are also set back,
but the firing pin cannot reach the primer (4) at this time. After the
projectile leaves the bore, the arming sleeve spring (7) raises the
arming sleeve (5) and primer holder assembly (8) to a position directly
under the safety disk (3). During the flight of the projectile, the
firing pin spring returns the striker and the firing pin (2) to their
original positions. On impact, when the fuze is set for instantaneous
action (cap removed), the striker drives rearward and forces the firing
pin through a hole in the safety disk and into the primer. The primer
3-38
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FSTC-CW-07-100-73
Fuze, point detonating, Km-1
is thus ignited and in turn sets off the detonator (11) and the booster
(12). When the fuze is set for delay action (cap in place), the action
is identical with that for nondelay action except that on impact, the
cap (1) prevents the striker from being driven rearward. The primer
holder assembly moves forward, and, having overcome the resistance of
the safety disk, drives the primer against the firing pin to initiate
the explosive train of the fuze.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
45-mm Tank guns M1932, M1934 &
M1938; antitank guns M1932,
M1937 & 141942
57-mm Antitank guns M1941, 141943
(ZIS-2), 141949
76-mm Gun, M1902/30, M1936(F-22),
M1939(USV), and M1942(ZIS-3);
Howitzer 141927 & M1938. Tank
guns 141938/39 (L-11) & 141939
(F-32)
85-mm AA Gun 141939; Tank guns
141943 (D-5T85) and 141944
(ZIS-S53) SP gun 141944 (1)5-585)
45-mm Frag --240, 0-240A, 0-240M
57-mm Frag 0-271, 0-271U
76-mm Frag 0-350, 0-350A,
Frag-HE OF-343, OF-350, F-350A
Frag-GAS OKh-350
HE-F-354
85-mm Frag, 0-365K, 0-365
3-39
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[STC-CW-07-100-73
Fuze, point detonating, KTM-1
REFERENCE
None
3-40
bT.TCsE!
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21 T1.
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FsT0-ow-v-ico-73.
Fuze, point d.etonating, KTM-1U and KTM2-1U
g
DISCUSSION
The Soviet KTM-1:
fuze series. The
firing pin holder
detonator run is
explosive corn
and are armed
which is pressed
either with or wi
achieved with the
cap removed.
and KTMZ-1U are improved versions of the original KIM-1
:CTM-1U is identical to the KTM-1 except, the two piece
is replaced with a one piece plastic holder, the
abricated from steel rather than copper and the
ried slightly. They are not considered bore safe
by setback. The KTMZlU includes a fixed delay element
place above the detonator. The KIM-Li may he fired
out the nose cap a slight mechanical delay is
cap in place, instantaneous action takes place with the
In overall appearance the KTM-1U and K?11gZ-117 are identica
cap and head of the KTMZ-1U are painted black.
EkRACTERISTICS
but the nose
Fuze Assembly:
Body materia
Markings --
os
Body material
Body length
Explosive ---
Explosive weight -
eel
77 lb
Steel
1.30 in
ryl
126
FunctionalData:
Arming method ------ - Setback
Firing method ----- Impact
Safety devices -----------None
ting distance --
-de
Delay time ------------
3-41
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FSTC-CW-07-100-73
Fuze, point detonating, KTM-1U and KTMZ-1U
.41
3.82
UMW
.66
.70
19
.57
.44
.95
.84 DIA
.81 DIA
1.08 DIA
1.49 DIA
1.57 DIA
1.40 DM
10 TM
1.16 DIA
---.72 DM
Neg. 511776
18
19
6
7
8
9
10
11
12
13
14
15
16
FUNCTIONING DESCRIPTION
Upon firing, setback moves the arming sleeve (8) to the rear compressing
the arming spring (10), and locking the stirrup prongs (9) in the groove
of the arming sleeve. With the arming sleeve locked to the primer
carrier (12) the fuze is armed. As deceleration takes place, the arming
sleeve and primer carrier are moved forward by the arming spring. Upon
impact, nose cap removed, the firing pin (3) is driven to the rear and
impinges on the primer (18) which initiates the detonator (19) and
booster (17).
For delay action, with the nose cap (1) in place, the arming sleeve and
primer (18) are carried forward by inertia to impinge the primer on the
firing pin.
Functioning of the KTMZ-1U is identical, except the flash from the primer
initiates the delay element first and then the detonator and booster.
(No disassembled view available)
3-42
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FSTC-CW-07-100-73
Fuze, point detonating, KTM-1U and KTMZ-1U
WEAPONS AND PROJECTILES USED WITH
Weapons
Fuze
Projectiles
45-mm Tank guns
57-mm Antitank guns
M1941, M1943(ZIS-2) and M1949
76-mm Gun, M1902/30, M1936,
M1939(USV) M1942(ZIS-3)(F-22)
Howitzer M1927 & M1938. Tank gun
M1938/39 (L-11) & M1939(F-32)
85-mm AA gun M1939; tank guns
M1943 (D-5T85) and M1944
(ZIS-S53) SP gun M1944 (D5-585)
REFERENCE
KTM-1-U 45-mm Frag -0 -240, 0-240A,
0-240M
57-mm Frag 0-271, 0-271U
KTMZ -1 -U 76-mm Frag 0-350, 0-350A
Frag/HE OF-343,
OF-350, OF-350A
85-mm Frag 0-365K
FSTC Exploitation Report, FSTC-CR-20-15-70
FSTC Exploitation Report CR-20-54-70 dated December 1970
3-43
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, KTMZ-1 and KTMZ-2
DISCUSSION
The KTMZ-1 and KTMZ-2 are setback armed, impact fired, short delay fuzes.
They are identical in design and function to the Km-1 and KTM-2 with the
exception of a delay pellet above the detonator. These fuzes are
normally used for delay action and are fired with the nose cap in place.
Two shallow aircumferential grooves have been cut at the junction of the
nose and body and another on the conical surface of the body. The nose
and cap of the KTMZ-1 and KTMZ-2 are painted black to! distinguish them
from the KTM series. There are two spanner wrench holes in the fuze, one
on the nose surface and the other on the body.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Steel
0.79 lb
Functional Data:
Arming method Setback
Firing method Impact
Markings
Booster
HTMZ-1
Safety devices
None
Arming distance
Body material
Steel
Arming time
Body length
1.18 in
Self-destruct time
NA
Explosive
Tetryl
Delay time
Explosive weight
117 gr
3-45
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FSTC-CW-07-100-73
Fuze, point detonating, KTMZ -1 and KTMZ -2
1.57 0IA
1.42 DIA
10 YP1
10
All dinmmtom In Inches
2
FUNCTIONING DESCRIPTION
On firing, setback causes the arming sleeve (4) to move rearward; com-
pressing the arming sleeve spring (11) and bending the prongs of the
stirrup (5) inward. As the arming sleeve passes over the prongs, they
move outward and engage the arming sleeve, simultaneously the striker (2)
and firing pin move to the rear and compress the firing pin spring. The
length of the firing pin prevents it from striking the primer at this
point.
On deceleration, the firing pin spring and arming sleeve spring move
their respective components forward. This action withdraws the primer
holder (6) from the flash hole (12). The fuze is now fully armed.
Upon impact, the primer holder and stirrup are carried forward by
inertia, bending the lugs on the retainer washer and impinging the primer
(10) on the firing pin to initiate the explosive train.
3-46
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Fuze, point detonating, KTMZ-1 and KTMZ-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm gun, M1939, M1942 SU-76
85-mm Tank gun, M1943 (D5T85) &
141944 (ZIS-S53); SP gun M1944
(D5-S85)
76-mm Frag 0-350A
Frag HE, OF-343, OF-350, OF-350-A
85-mm Frag 0-365K, 0-365
? 19
Neg. 511779
REFERENCE
None
3-47
(Reverse Blank)
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DISCUSSION
The MG-N is a setback and centrifugal armed, point detonating fuze with
an out-of-line detonator. It employs a pyrotechnic detent to lock the
rotor in the out-of-line position. The fuze is a single piece steel
body, waterproofed at both ends with sealing compound, a removable steel
shipping cap protects the nose of the fuze during storage and handling.
When the cap is left in place during firing, a slight delay occurs. With
the cap removed an instantaneous reaction takes place. This fuze has
basically the same design and functioning characteristics as the Soviet
MG-57, with the exception of the self-destruct feature.
FSTC-CW-07-100-73
Fuze, point detonating, MG-N
Mg, 311.1131.)
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.78 lb
Mr-H
Steel
1.575 in
Tetryl
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time Self-destruct time Delay time
Setback and
centrifugal
force
Impact
Out-of-line
detonator
NA
3-49
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FSTC-CW-07-100-73
Fuze, point-detonating, MG-N
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, the weighted arming delay primer moves to the rear against
its spring and is initiated by the firing pin. The resulting flame
flashes through a groove in the side of the rotor housing and ignites
the pyrotechnic (black powder) arming delay pellet holding the rotor
locking detent in position. As the delay pellet burns, the locking
detent is forced into the void by centrifugal force. Simultaneously,
the opposite locking detent is also moved outward against its spring by
centrifugal force. The rotor is now unlocked, and is turned to the in
line position. Upon impact, the firing pin is driven into the primer
which initiates the detonator, relay, and booster.
3-50
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FSTC-CW-07-100-73
Fuze, point detonating, MG-N
WEAPONS AND PROJECTILES USED WITH ?
Weapons
Projectiles
75-mm Gun, M1942
(ZIS-3)
76-mm HE Frag
0-350A
Tank Gun D-56T
OF-350
& OF-350A
REFERENCE
None
3-51
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, MP and MP-82
Neg. 511782
DISCUSSION
The MID and MP-82 are setback armed, point detonating fuzes used in mortar
projectiles. Their construction and function are identical except for
the increased arthing resistance of the MP-82. The bodies are made of
plastic and have a metallic nose cap. Their overall color is black or
brown.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material ----
Body length
Explosive
Explosive weight -
Plastic
(0.178 lb)
MII and MII-82
Steel
1.36 in
Tetryl
10.8 gm
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Self-destruct time --- None
Delay time Instantaneous
3-53
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FSTC-CW-07-100-73
Fuze, point detonating, MP and MP-82
1.58" DIA
140" DIA
10 TPI
Neg. 511783
10
11
FUNCTIONING DESCRIPTION
Prior to firing, the small metal boresafety cylinder (6), located in the
base of the bushing (4), is held in position by the arming spring (10)
so as to prevent the firing pin (3) from contacting the primer pellet (7).
Upon firing, the arming weight (5) is violently set back against the
arming spring (10), freeing one end of the arming spring from its recess
in the bushing (4). The tension of the arming spring causes it to move
in an oblique direction, carrying with it the boresafety cylinder (6),
and thereby clearing the path of the firing pin (3). Upon impact, the
nose cap (1) is crushed rearward, driving the firing pin (3) into the
primer pellet (7) in the bushing cup (11) and setting off the detonator
(8), which in turn explodes the booster (9). The booster then detonates
the explosive filler of the projectile.
(No disassembled view available)
3-54
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FSTC-CW-07-100-73
Fuze, point detonating, MP and MP-82
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj ectiles
50-mm Mortars, M1938, M1939, M1940,
M1941
82-mm Mortars, M1937 (82-BM37),
M1941 (82-8M41) and M1943
(82-BM43)
REFERENCE
50-mm Frag, 0-822, 0-822A
82-mm Frag, 0-832
PA - memorandum Report No. 133 dated January 1957
3-55
(Reverse Blank)
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DISCUSSION
The M-1 is a point detonating, setback armed fuze used in mortar pro-
jectiles. It is considered obsolete but may still be in existence. The
top of the fuze is protected by a metal cap which is removed before
firing.
FSTC-CW-07-100-73
Fuze, point detonating, M-1
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
(0.55 lb)
M-1
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
distance
Arming
Steel
Arming time
Self-destruct time
None
Delay time
Instantaneous
3-57
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FSTC-CW-07-100-73
Fuze, point detonating, M-1
3.10
1.79
i I
M-I
12
1 57 DIA
1.40 DIA
K.
10 TPI
Neg. 51178$
1
2
3
4
5
6
8
9
FUNCTIONING DESCRIPTION
Upon firing, the arming sleeve (10) sets back, its beveled edge cams the
safety pin (11) outward, and the upper check ball (3) drops into the
recessed portion of a well on top of the arming sleeve (10), freeing
the sleeve for forward movement. When the projectile leaves the bore,
the arming sleeve spring (4) decompresses and forces the sleeve forward,
permitting the lower check balls (5) to drop inside a well in the sleeve.
This frees the striker (2) for rearward movement. During the flight of
the projectile, the tension of the safety spring (7) prevents the striker
and firing pin (12) from moving rearward and detonating the projectile.
Upon impact, the striker (2) is driven rearward, and the firing pin (12)
sets off the detonator (8) which in turn actuates the booster (9) and the
explosive charge of the prolectile.
?
, 511786
3-58
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FSTC-CW-07-100-73
Fuze, point detonating, M-1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
50-mm Company Mortars, M1938,
M1940 and M1941
82-mm Battalion Mortars, M1937
(82-BM37), M1941 (82-BM-41),
and M1943 (82-BM-43)
120-mm Regimental Mortars, M1938
and M1943
REFERENCE
None
50-mm Frag, 0-822, 0-822A, 0-8825h
82-mm Frag, 0-832, 0-832D Smoke,
D-832
120-mm Frag-HE OF-843
Inc Z-843A
3-59
(Reverse Blank)
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PSTC-CW-07-100-73
Fuze, point detonating, M-2, M-3, M-4, and M-5
DISCUSSION
The M-2, M-3, M-4, and M-5 fuzes are setback armed, impact fired, low
velocity (mortar) fuzes which are similar in construction and function.
The body of the M-3 fuze may be steel or brass; the body of the other
fuzes is red, black, or brown plastic. Two spanner wrench slots are
located 1800 apart on
foil or plastic, and the
placed around the booster
with phenolic cement.
CHARACTERISTICS
the fuze body. The closure caps may be aluminum
booster cups are steel. A lead seal has been
cup of the M-5 while the others are sealed
Fuze Assembly:
Functional Data:
Body material
Plastic
(M-3
Arming method
Setback
Steel)
Firing method
Impact
Weight
0.661 lb
approx.
Safety devices
Arming distance
None
Markings
M-5
Arming time
Booster
Self-destruct time None
Body material
Steel
Delay time
Instantaneous
Body length
1.30 in
Explosive
Tetryl
Explosive weight
96 gr
3-61
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FSTC-CW-07-100-73
Fuze, point detonating, M-2, M-3, M-4, and M-5
2.59"
1.55" DIA
1.40" DIA
10 TPI
FUNCTIONING DESCRIPTION
Upon firing, setback causes the arming sleeve (3) to move to the rear,
compressing the safety spring (4). As the arming sleeve moves into the
stirrup (6), the lip of the arming sleeve engages the prongs of the
stirrup, locking the stirrup and arming sleeve together.
Deceleration moves the arming sleeve and stirrup forward as a unit,
bringing the safety plug (9) in contact with the point of the firing
pin (5). The stationary firing pin forces the safety plug to move out
of line with the firing pin and primer detonator. This unblocks the
firing pin and arms the fuze.
Impact crushes the nose of the fuze and drives the firing pin into the
primer detonator, initiating the explosive train.
3-62
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FSTC -CW-07 -100 -73
Fuze, point detonating, M-2, M-3, 14-4, and M-5
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
M-2 M-3 M-5
82-mm Mortars, 141937 (82-BM37),
M1941 (82-3M41), & 141943
(82-BM43)
82-mm Mortars, M1937 (82-BM37),
141941 (82-BM41), & 141943
(82-BM43)
120-mm Mortars, 141938 & 141943
REFERENCE
82-mm Frag
Smoke
M-4
?12-mm
Frag
Smoke
0-832, 0-832D
D-832
0-832, 0-832D
D-832
120-mm Frag-HE 0F843, OF-843A
Inc Z-843A
Smoke D-843, D-843A
M-4: P. A. Memorandum Report No. 70, dtd Feb 1955
14-5: P. A. Memorandum Report No. MR-23, undated
3-63
(Reverse Blank)
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DISCUSSION
FSTC-CW-07-100-73
Fuze point detonating, M-6
neg JAIA
The M-6 is a point detonating setback armed fuze used in low velocity
(mortar) projectiles. The fuze body is produced from compression molded
brown plastic. A steel sleeve with a zigzag slot, a spring, three steel
balls and a slider comprise the arming assembly. The slider, with its
out-of-line detonator, is held in the safe condition by the firing pin.
A protective steel cap secured by a pull wire is removed prior to firing.
Two spanner wrench slots run the length of the ogive.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Plastic
0.28 lb
M-6
Steel
0.72 in
Tetryl
90.0 gr
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
Out-of-line
detonator
Arming distance 0.75 - 10
meters
Arming time
Self-destruct time None
Delay time Instantaneous
3-65
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FSTC-CW-07-100-73
Fuze, point detonating, M-6
325
49
ho? 80 DIA
rAG
107 DIA
22
I. 4
95
Sc
09
47
Neg . 511791
FUNCTIONING DESCRIPTION
Upon firing, setback forces the arming sleeve (2) downward. This releases
the arming sleeve retaining ball (3) which falls into the body cavity (4).
The arming sleeve (2) continues rearward, delayed by the zigzag slot in
the arming sleeve and guided by a pin on the slide's holder (5) until it
reaches the end of its travel. As setback ceases, the arming spring (6)
expands moving the arming sleeve (2) forward, and releasing the two
firing pin retaining balls (7), which fall into the body cavity. This
permits the firing pin (8) to rise, powered by the arming spring (6),
moving the point of the firing pin out of its hole in the slider (9).
The slider powered by the slider spring (10), moves laterally aligning
the detonator (11) with the firing pin. The fuze is now armed. Upon
impact, the firing pin (8) is driven downward crushing the copper
membrane. The point of the firing pin pierces the detonator (11),
initiating the lead charge (13) and the booster (14).
155 01A
1.40 MAJ DIA
10 TPI
86 DIA
75 MAJ DIA
24TPI
SO DIA
3-66
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FSTC-CW-07-100-73
Fuze, point detonating, M-6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm Mortar 1937, M1942 & 1943
82-mm HE-Frag 0-832; 0-832D
REFERENCE
FSTC Exploitation Report, FSTC-CR-20-40-66 dated October 1966.
3-67
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, M-12
DISCUSSION
The fuze is a setback armed, point detonating fuze with selectable
superquick or delay functioning on impact. The fuze is similar in con-
struction and functioning to the M-6 with the exception of the selectable
delay interrupter. The nose of the fuze is unpainted, the nose cap and
body are painted black or have a black oxide finish. There are two
spanner wrench holes in both the nose and body.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
1.18 lb
M-12
Steel
1.50 in
Tetryl
24.8 gm
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
Out-of-line
detonator
Arming distance
Arming time
Self-destruct time NA
Delay time Superquick
and delay
(0.01 sec)
3-69
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FSTC -CW-07 -100 -73
Fuze, point detonating, M-12
Arr dimensions in inches
0501*
22011
40M
MM
N M
M M
1,0 M
.401110411M
Neg. 511794
?1-1
FUNCTIONING DESCRIPTION
10 Mai 01.%
7 TPi
Prior to loading the weapon, the fuze safety cap is removed and the
desired delay is selected. Upon firing, setback forces the armings
sleeve (3) downward. This releases the arming sleeve retaining ball (2)
which falls into the fuze body cavity. The arming sleeve (3) continues
rearward, delayed by the zigzag slot in the arming sleeve and guided by
a pin on the sleeve holder (5) until it reaches the end of its travel.
As setback ceases, the arming spring (4) expands moving the arming
sleeve (3) forward, releasing the two firing pin retaining balls (7),
which fall into the body cavity. This permits the firing pin (8) to
rise, powered by the arming spring (4), moving the point of the firing
pin (8) out of its hole in the slider (9). The slider, powered by the
slider spring (10), moves laterally aligning the detonator (9) with the
firing pin (8). The fuze is now armed. Upon impact the firing pin
initiates the detonator (9) which on superquick option, flashes through
the flash channel to initiate the relay detonator (15) and booster.
If the delay option has been selected, the flash channel is blocked, and
the flash from the primer, ignites both black powder delay elements (12)
which ignite the relay detonator and booster.
3-70
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FSTC-CW-107-100-73
Fuze, point detonating, M-12
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
120-mm Mortars M1938 & M1943
STRIKER ...OSSA.<
1909.? CAP
opal CAP
120-mm Frag - F-843, 0F843A, 0-843
A.01 TED RUT AN,
BOOST EA CUP OUTE11 SrA,. *1' *C \
SO it'll...WPCSA
oEL?T ELEVEPST
OrtAT IIOSSP91 SU
DHAAC E1.011/17 CAPS1
SOOSTC* Cop
S1.1969 0E5
SLOSER *.OM.
SALL Iii? RETA.4V+121,N.N.N....? s.
sit am, EILECv(
CAP
ASsofronT00
000ela CLO RINER
unet 550l:9PASAI
CAP 9
REFERENCE
555vi taK-
St AL
AEUR MU01901
SI 579
SPAIN"
51155Cr LEE,.E. SARPIS
FSTC Exploitation Report, FSTC-CR-20-66-66, February 1967
3-71
(Reverse Blank)
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DISCUSSION
only smi
fuze which
?the fuze
before
FSTC-C2-07-10
point detonating, M-50
a point defonati
mentation orojenti
he Soviets consider
covered with a lead foil
ng. The firing pin (3)
nondelay action fuze
The M-5 an extremely sensi ive
?tired," Prior to use, the nose of
This ?cap must be removed
d by two check halls (6)
which are lodged between the bottom of t.he striker head (1) and the, top
of the stirrup (2), and two check balls lodged at the lower end of
the firing pin (3). This prevents any movement of the firing pin until
firing takes place. This fuze is considered obsolete,
)TER1STIC5
FF:uze Assembly:
Body material -
Weight -----
Markings --------
Body mated)
Body length
Explosive -----
Explosive weight -
Steel
0,95 in
ming distance
Arming time ---------- ?
Se:If-destruct time --- None
Delay time ----------- tnstan?aneo
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FSTC-CW-07-100-73
Fuze point detonating, 11-50
I 14
60
2.36
All ellmwslonn In Inch.,
511797
4
5
FUNCTIONING DESCRIPTION
On firing, the stirrup (2) sets back and allows the upper check balls (6)
to fall away, thus releasing the firing pin (3) for forward movement.
After the projectile leaves the mortar tube, the anticreep spring (7)
forces the stirrup forward, allowing the lower check balls (8) to fall
away, freeing the firing pin for rearward movement. At this point, the
striker head (1) protrudes approximately one-half its length above the
top of the body of the fuze, showing a red line across its diameter. The
firing pin is driven rearward on impact initiating the detonator (4) and
booster (5).
(No disassembled view available)
3-74
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FSTC-CW-07-100-73
Fuze, point detonating, M-50
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
50-mm Mortars, M1938, M1940,
and 141941
REFERENCE
None
50-mm Frag 0-822, 0-822A,
0-822Sh
3-75
(Reverse Blank)
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1
FSTC-CW-07-100-33
Fuze, point detonating, RG-6
DISCUSSION
The RC-6? is a setback armed, impact fired, variable delay fuse watch has
been replaced by the RGM series. The RG-6 has no safety device to
?prevent premature activtion af the delay setting and is less sensitive
than the RGM or RGM-2. The RG-6 has an elongated nose cap with a
rounded top into which the striker extends. The firing colas is
achieved by the combined use of the nose aap and selector.
CUARACTERISTICS
Fuse Assembly:
[Functional Data:
Body material -----
Steel Ar7ling method --------
Setback
bleitht
0.946 ].b Firing method --------
Impact
Markings ---
Booster
Safety devices -------
Oat-of-line
detonator
Body material -----
Steel
Arming distance ------
ilody length -------
I in (approx)
Arming time
sxplosive ---------
Tetryi
Self-destruct time --et. NA
Explosive weight --
555 gr
Delay time ?,--ekePP-vve Instantaneous
tondelay an
delay
3- 77
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FSTC-CW-07-100-73
Fuze, point detonating, RG-6
4AI
?.1
1.60D14
1.42 DI
10TPI
17
18
19
All mnertsicos 1E hes
FUNCTIONING DESCRIPTION
On firing, the arming sleeve (2) sets.back, compresses the arming sleeve
spring (3), and locks with the retaining ball sleeve (4). Simultaneously
the inertia sleeve (17), overcoming the opposition of the prongs of the
inertia pin safety clamp (18), sets back, compresses the inertia sleeve
spring (19), and locks with the inertia pin (20). The springs (3) and
(19) remain compressed until the shell- leaves the bore of the gun, when
they overcome the force of inertia. Then the arming sleeve spring moves
the arming sleeve and the retaining ball sleeve forward, releasing the
three retaining balls (11), and centrifugal force causes the balls to
escape from their housings in the striker (1) so that they no longer
prevent the movement of the striker or the primer holder (5). At the
same time, the inertia sleeve spring moves the inertia sleeve forward,
drawing the attached inertia pin out of its socket in the relay charge
housing (16) and thereby unlocking the rotor body (14). The rotor body
turns under the influence of the spiral spring (8), brings the detonator
(15) into alignment with the relay charge (9) leading to the booster (10),
and comes to rest on a check pin.
If the fuze is set to instantaneous action ("0") with fuze cap removed,
the striker (1) is driven rearward on impact with the target, over-
coming the anticreep spring (12), and the firing pin strikes the primer
(6). At the same setting, but with the fuze cap on, the primer holder
3-78
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FSTC-CW-07-100-73
Fuze, point detonating, RG-6
and primer move forward, and the primer strikes the firing pin. In
either case, the flash passes directly through an opening in the setting
selector (13), and into the detonator in the rotor body. The detonation
wave from the detonator travels through the relay charge and activates
the booster.
If the fuze is set to delayed action ("3"), the setting selector blocks the
direct channel from the primer to the detonator, and the flash must pass
to the detonator by way of the powder delay pellet (7). (The fuze cap
has the same effect on the operation at the delay setting as in the
instantaneous setting: without fuze cap, the firing pin moves rearward
to strike the primer; with the fuze cap, the primer moves forward to
strike the firing pin.)
3-79
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FSTC-CW-07-100-73
Fuze, point detonating, RG-6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Howitzer, M1910/30,
M1909/37, & M1938 (M-30) Guns,
M1931 & M1931/37 (A-19)
152-mm Howitzer, M1909/30, M1938
(410) & M1943 (D-1) Tank
Howitzer M1938/40 Gun Howitzer,
M1937 (ML-20) Gun M1910/34 SP
Gun M1937/43 (ML-20S)
REFERENCE
None
122-mm HE F-460, F-460K, F-460N,
F-460U
Frag HE OF-462, OF-462A, OF-462L,
OF-462N
152-mm HE F-533, F-533K, F-533L,
F-533M, F-533N, F-533(U)
Frag HE OF-530, OF-530A
Frag 0-530A
(No disassembled view available)
3-80
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FSTC-CW-07-100-73
Fuze, point detonating, RGM, RGM-2, and RGM-3
DISCUSSION
The RGM and RGM-2 are setback armed, impact fired, variable delay fuzes
used with medium caliber projectiles. The design and functioning of the
RGM and RGM-2 are similar. According to Soviet documents, the RGM was
restricted from use in 1949 because of arming failures caused by
insufficient setback when low charges were fired. This deficiency was
corrected by replacing rigid arming components with springs in the RGM-2.
The RGM and RGM-2 provide instantaneous, nondelay, and delayed detonations
by the combined use or omission of the nose cap and selector switch.
An RGM-3 fuze was developed but no information as to its design or
function is available. It is assumed that the RGM-3 is a modified version
of the RGM-2.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
1.01 lb
PFM-2
Steel
0.827
Tetryl
197.27 gr
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
Out-of-line
detonator
Arming distance
Arming time
Self-destruct time NA
Delay time 0.03 to 0.05
sec
3-81
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FSTC-CW-07-100-73
Fuze, point detonating, RGM, RGM-2, and RGM-3
111111i111i1111111)11
1 57 DIA
142 DIA
10 TPI
12
13
15
la
es 511801 FUZEPDIMPACTMODELRGM SOVIET
FUNCTIONING DESCRIPTION
On firing, the arming sleeve (1) sets back, compresses the arming sleeve
spring (2) and locks with the retaining ball sleeve (3). Simultaneously,
the inertia sleeve (14), overcoming the opposition of the prongs of the
inertia pin safety clamp (16), sets back, compresses the inertia sleeve
spring (15), and locks with the inertia pin. The springs (2) and (15)
remain compressed until the shell leaves the bore of the gun, when they
overcome the force of inertia. Then the arming sleeve spring moves the
arming sleeve and the retaining ball sleeve forward, releasing the three
retaining balls (12), and centrifugal force causes the balls to escape
from their housings in the striker (4) so that they no longer prevent
the movement of the striker or the primer holder (5). At the same time,
the inertia sleeve spring moves the inertia sleeve forward, drawing the
attached inertia pin out of its socket in the relay charge housing (9)
and thereby unlocking the rotor body (8). The rotor body turns under the
influence of the spiral spring (7), brings the detonator into position
opposite the relay charge leading to the booster (11), and comes to rest
on a check pin.
If the fuze is set to instantaneous action ("O"), with fuze cap removed,
the striker (4) is driven rearward on impact with the target, and the
firing pin strikes the primer. At the same setting, but with the fuze
3-82
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FSTC-CW-07-100-73
Fuze, point detonating, RGM, RGM-2, and RCM-3
cap on, the primer holder and primer move forward, shearing the claws of
the primer holder retainer, and the primer strikes the firing pin. In
either case, the flash passes directly through an opening in the setting
selector, and into the detonator in the rotor body. The detonation wave
from the detonator travels through the relay charge and activates the
booster.
If the fuze is set to delayed action ("3"), the setting selector blocks
the direct channel from primer to detonator, and the flash must pass to
the detonator by way of the powder delay pellet (13). (The fuze cap has
the same effect on the operation at the delay setting as at the instanta-
neous setting: without fuze cap, the firing pin moves rearward to strike
the primer; with fuze cap, the primer moves forward to strike the firing
pin.) A safety plunger (6) prevents muzzle bursts at this setting,
should the fuze primer ignite while the shell is in the bore of the
weapon. Premature action of the primer forces the safety plunger to
shear its retaining pin, move rearward, and immobilize the rotor body,
thereby preventing the rotor body from moving the detonator into align-
ment with the relay charge and booster. Accordingly, the flash travels
from the powder delay pellet to the detonator but, unable to pass from
the detonator to the relay charge and booster, cannot activate the
projectile.
3-83
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FSTC -CW-07 -100 -73
Fuze, point detonating, RGM, RGM-2, and RGM-3
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm HOWITZER, 111936 (11-30)
Guns, M1931 & M1931/37 (A-19)
Tank Gun M1943 (D-25) SP guns
111944 (D-25S) and 111931 (A195)
152-mm HOWITZER, M1938 (H-10) and
111943 (D-1) Tank Howitzer 111938/40,
Gun 111910/34, Gun-Howitzer 111937
(ML-20) SP Gun 111937 (ML-20S)
REFERENCE
122-mm Frag, HE OF-462
OF-471N
152-mm Frag, HE OF-530
OF-530A
OF-540
(No disassembled view available)
FSTC Exploitation Report CR-20-52-70, dated December 1970
3-84
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DISCUSSION
The ROM-6 is a setback
an improved version of
identical to the V-429
parts of the RGM-6 and
CHARACTERISTICS
FSTC-CW-07-100-73
Fuze, point detonating, RGM-6
,Neg. 511802
armed, impact fired, variable delay fuze which is
its forerunners in the RGM series, and is nearly
fuze in description and function. Most of the
V-429 are interchangeable.
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
1.02 lb
PrM-6
Steel
1.8 in
Tetryl
195.96 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time Delay time
Setback
Impact
Out-of-line
detonator
NA
Instantaneous,
nondelay and
delay
3-85
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FSTC-CW-07-100-73
Fuze, point detonating, RGM-6
FUNCTIONING DESCRIPTION
See V-429.
(No line drawing available)
(No disassembled view available)
3-86
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FSTC-CW-07-100-73
Fuze, point detonating, RGM-6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Howitzer, M1938
152-mm Howitzer, 141943
REFERENCE
122-mm Frag/HE, OF-462, OF-462A
122-mm HE, F-460, F-460A
152-mm Frag/HE, OF-530, OF-530A
152-mm HE, F-530, F-530A
FSTC Exploitation Report, }'STC-CR-20-17-7l
3-87
(Reverse Blank)
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FSTC-CW-07-100-73
Neg. 511803
Fuze, point detonating, V-22
DISCUSSION
The V-22 is a setback and spin armed point detonating fuze used on 122-mm
high explosive mortar projectiles. With the exception of the designation
"V-22," this fuze is identical in design, material, and function to the
Soviet M-12 fuze.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
1.18 lbs
B-22
Steel
1.50 in
Tetryl
24.8 gm
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
Out-of-line
detonator
Arming distance
Arming time
Self-destruct time NA
Delay time Superquick
and delay
(0.01 sec)
3-89
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FSTC-CW-07-100-73
Fuze, point detonating, V-22
(No line drawing available)
FUNCTIONING DESCRIPTION
Same as Soviet M-12,
(No disassembled view available)
3-90
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FSTC-CW-07-100-73
Fuze, point detonating, V-22
WEAPONS AND PROJECTILES USED WITH
Weapons
Pro j ectiles
120-mm Mortars M1938 and M1943
REFERENCE
None
120-mm Frag F-843
OF-843
OF-843A
3-91
(Reverse Blank)
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L
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DISCUSSION
FSTC -CW -07 -100 -71
Fuze, point detonating, V-24
The M-2 point detonating fuze is used on 140-mm and 240-mm rocket
projectiles. The steel body is painted black with a dull gray finish on
the ogive. The delay selector may be set on "3" for instantaneous or
for delay. Three centrifugal ietents maintain the fuze in a safe
condition until fired.
CHARACTERISTICS
Fuze Assembly:
Body material ----------
Markings?-------
Booster
Body material ----------
Body length ------------
Explosive ?-----
Explosive weight -------
Steel
LOB lf
13-fa
Steel
1.20 in
Functional Data:
Arming method -------- Centrifugal
force
Firing method -------- Impact
Safety devices ------- Centrifugal
detente
Arming distance ------
Arming time ----------
Self-destruct time --- NA
Delay time -----------
3-93
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FSTC-CW-07-100-73
Fuze, point detonating, V-24
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, centrifugal force retracts the three spring loaded detents
to clear the firing pin.
Upon impact, if delay was selected, the firing pin is driven into the
flash pellet which ignites the delay pellet. Upon burnout of the delay
pellet, the flash passes on to the detonator which initiates the booster
and main charge. For instantaneous functioning the flash pellet bypasses
the delay element and ignites the detonator.
(No disassembled view available)
3-94
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FSTC-CW-07-100-73
Fuze, point detonating, V-24
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
140-mm Rocket Launcher
240-mm Rocket Launcher
REFERENCE
140-mm Rocket
240-mm Rocket
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD).
3-95
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, V-25
DISCUSSION
The V-25 is a setback and spin armed point detonating fuze used in spin
stabilized rockets. The fuze is made of cadmium plated steel and has a
brass delay selector rod. A screw type nose cap protects the head of
the fuze from dirt and moisture and plastic sealing washers prevent
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
1.35 lb
B-25
Steel
1.43 in
Tetryl
373 gr
Functional Data:
Arming method Setback &
centrifugal
force
Firing method Impact
Safety devices Setback &
centrifugal
detent
Arming distance
Arming time
Self-destruct time NA
Delay time Instantaneous
short (0.26
sec) or long
(0.31 sec)
delay
3-97
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FSTC-CW-07-100-73
Fuze, point detonating, V-25
moisture from entering through other threaded openings. Bore safety io
provided by the use of interlocking setback and centrifugal detents.
Three optional delays may be selected by turning the selector rod to "M"
short delay, "0" superquick or "M" long delay. On flat impact with the
target, two graze weights cam the detonator carrier forward into the
firing pin.
438
.2o - ?
.13-4
1.33
.76 DIA
.86 DIA
27 WI
1.00 DIA
1.43 DIA
1.57 DIA
1.57 DIA
1.40 DIA
10 WI
1.26 DIA
1.10 DIA
26Th
1.10 DIA
Neg. 511806
FUNCTIONING DESCRIPTION
Upon firing, setback moves the two setback weights (7) to the rear,
compressing the setback weight springs and unlocking the centrifugal
detents (5). Centrifugal force, upon completion of setback, moves the
centrifugal detents (5) to the side, unblocking the firing pin (2) and
allowing the arming sleeve (6) to move forward under the force exerted
by its spring (8). The setback and centrifugal detents are now locked
in position and the firing pin has a clear path to the primer (10).
Upon impact, the firing pin is driven to the rear initiating the primer
which ignites the detonator directly or the delay elements, depending
on the position of the delay selector rod.
If the target is impacted at a low angle, the graze weights (11) cam the
primer assembly forward to strike the firing pin and initiate the explosive
train.
3-98
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FSTC-CW-07-100-73
Fuze, point detonating, V-25
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
140-mm Rocket Launcher
-
140-mm HE OF-949
REFERENCE
FSTC Exploitation Report, FSTC-CR-116-68 dtd April 1969.
3-99
(Reverse Blank)
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F'JT 07-100-73
Vuze point detona V-429
DISCUSSION
The -429 is a set5ack armed, impact fired fuze which closely resembles
the RCM-2 and ROM-6 in external appearance and functioning. Many of Its
internal components have been redesigned to improve their performance.
The body is machined from steel, the upper portion being cadmium placed
and the lower body blued. All openings are sealed by sealing rings and
the entire fuze is varnished for protection from corrosion. Premature
functioning of rhe primer drives a detent (14) downward to lock the rotor
in the to prevent nuzzle bursts. Normal functioning
of the primer drives detent downward to lock the rotor in the armed
pos d prevent movement upon impact.
CHARACTERISTICS
uze Assembly:
y material --
Markings
ter
Body material --
Body length -----
Explosive --------- Tetryl
Explosive weight -----192.20 gr
eel
0.97 lb
B-429
nctionai. Data:
frming ptej..hod
Firing method - -
Safety devices
detonator
Arming distance -
Arming time -------
9elf-destrucr time --- NA
Delay time Instantaneous
and delay
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FSTC-CW-07-100-73
Fuze, point detonating, V-429
MARKING AROUND
CIRCUMFERENCE
9429 34K 3.58;
AUDIWNSMNSININCHES
nno
FUNCTIONING DESCRIPTION
Upon firing, the setback
spring (2) and releasing
setback collar (4) moves
Nag 511810
sleeve (1) moves down compressing the setback
the locking ball (3). Simultaneously, the
downward against its spring (5) and the lock
pin (6) releases its pressure on the ball (7) allowing the ball (7) to
move into the cavity. As acceleration diminishes, the setback sleeve
(1) is moved forward by its spring into the space formerly occupied by
the locking ball (3). The firing pin locking balls (8) are now moved
into the vacant cavity by centrifugal force. The lock pin (6) is also
forced upward by its spring (13) withdrawing its shank from the lock pin
hole in the booster lead disk. This unlocks the out-of-line rotor which
is rotated by a clock spring (9) and aligns the detonator with the
booster lead (10). Travel of the rotor is limited by a stop pin (14).
Upon impact, if the safety cap has been removed, the firing pin (11) is
driven into the primer (12). If the safety cap has not been removed,
the primer carrier (15) moves forward impinging the primer on the firing
pin. The resulting flash passes through the flash channel to ignite the
delay element (16) and drive the safety plunger (14) downward shearing
its pin (17), and locking the rotor in the armed position. If the
selector (18) has been set on superquick action, the primer flash
6
3-102
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initiates the detonator in the rotor
and booster. If the selector is set
blocked and the delay element initia
WEAPONS AND PROJECTILES USED WITH
FSTC-CW-07-100-73
Fuze, point detonating, V-429
which functions the booster lead
on delay, the flash channel is
tes the detonator and booster in turn.
Weapons
Projectiles
122-mm Gun D-74
122-mm Frag-HE
OF-472
130-mm Gun M-46
130-mm Frag-HE
OF-482
152-mm Howitzer,
D-20
152-mm Frag-HE
OF-540
REFERENCE
FSTC Exploitation Report, FSTC-CR-20-33-70A
3-103
(Reverse Blank)
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1
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DISCUSSION
FSTC-CW-07-100-73
Fuze, point detonating, V-5M1
The V-5M1 is a point
explosive aircraft
and a dark bakelite
elements and a pyrotechnic
achieved by setback
CHARACTERISTICS
detonating, setback armed fuze used on 57-mm high
rockets. The aluminum body has an anodized finish,
nose cap. It employs two out-of-line detonator
self-destruct feature. Arming delay is
of a zigzag arming sleeve.
Fuze Assembly:
Functional Data:
Body material
Aluminum
Arming method
Setback
Weight
0.55 lb
Firing method
Impact
Markings
Booster
B5M1
Safety devices
Out-of-line
detonator
Body material
Aluminum
Arming distance
Body length
0.827 in
Arming time
Explosive
Tetryl
Self-destruct time ---
?
Explosive weight
Delay time
Instantaneous
3-105
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FSTC-CW-07-100-73
Fuze, point detonating, V-5M1
me a. iwing available)
FUNCTIONING DESCRIPTION
Upon firing, inertia causes the setback assembly, containing a zigzag
sleeve, to move rearward allowing the small setback striker to cam a
locking ball from its recess. The setback striker then impinges on a
flash pellet which initiates two different actions: it ignites a powder
train in the self-destruct housing, and it ignites the pyrotechnic
pellets holding spring loaded positive blocks in the upper and lower
detonator sliders. (A plunger in the center of the lower slider sets
back, removing a final block on this mechanism.) Simultaneously, the
impact firing pin sets back into a recess in the upper detonator slider.
This provides an additional safety until after the projectile's inertial
force is overcome and the impact firing pin moves forward. When the
upper and lower pyrotechnic pellets burn out, the spring loaded plungers
in both detonator sliders are forced outward into the locked positions.
This permits the detonators to explosively align, thus arming the fuze.
Impact causes the impact firing pin to impinge on the upper detonator
and the flash passes on to fire the lower detonator, which initiates the
booster and main charge. If impact does not occur, the self-destruct
pyrotechnic train flashes directly through to the booster and the main
charge.
3-106
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FSTC-CW-07-100-73
Fuze, point detonating, V-5M1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
57-mm aircraft rocket launcher
57-mm rocket S-5 & S-SM
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD),
3-107 ,
(Reverse Blank)
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FSIC-CW-07-1,00-73
Fuze, point detonating, VGD-1
DISCUSSION
The V0U-1 is a setback and centrifugal armed fuze used in Soviet 130-mm
high explosive projectiles.
The fuze may be set for either instantaneous or short delay functioning
by?turning the selector switch to m0" (instantaneous) or "3" (delay).
An out-of-line detonator is employed and the fuze is considered horesefe.
The fuze body is a dull silver color and is extremely long and heavy.
CHARACTEBISTICS
ruse Assembly:
Body material ----------
Weight
1 Markings ---------------
;Booster
' Body material ----------
Body length -----
Explosive -----
Explosive weight -------
Steel
3.37 lb
?511-1
Steel
1.11) in
Tetryl
Functional Data:
Arming method -------- Setback and
spin
Firing method --------Impact
Safety devices ------- Out-of-line
detonator
Arming distance ------
Arming time ---------- ?
Self-destruct time --- NA
Delay time ----------- Instantaneous
& short dela
3-109
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FSTC-CW-07-100-73
Fuze, point detonating, VGU-1
2.52 DIA
2.047 DIA
10 TPI
1.917 DIA
FUNCTIONING DESCRIPTION
Upon firing, the weighted arming delay pellet compresses its spring and
impinges on the fixed firing pin. The flash from the arming pellet,
ignites a pyrotechnic delay detent which is preventing movement of the
detonator slider. Simultaneously, setback has moved the arming sleeve
to the rear and released a locking ball from the head of the firing pin
allowing the sleeve to move forward.
Upon burnout of the pyrotechnic delay detent, a spring removes the safety
detent from the detonator slider, permitting centrifugal force to complete
the arming process as follows: (a) release of two locking balls from the
firing pin; (b) releasing two centrifugal detents from the detonator
slider; (c) aligning and locking the detonator slider in the in line
position.
On impact, the firing pin is driven to the rear, initiating the primer
detonator and booster.
3-110
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WEAPONS AND PROJECTILES USED SITS
Weapons
MTN-CC-07-400-33
Fuze, point demseating, VOUsi
FrOi.et t ties
130-mm Coastal gun M53
130-mm HE Wrap OF3S-e2
!Nog, 511$1.
REFERENCE
DIA 'Report 017-CR-10-8-60, Field Examination of Se:lett:eel Items of
Foreign Ammunition. tU1, (SECRET-0E0),
3.-111
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, UGT, UGT-2, UGT-3, and 3GT
DISCUSSION
The UGT series of fuzes is an early Soviet design which in general has
been replaced by more advanced designs.
The fuzes are setback armed and impact fired; they differ only in minor
design changes to the external configuration and function. The UGT-2
has a removable nose cap which provides a nondelay action with the cap
removed and a delay of approximately 0.01 second with the cap in place.
The booster is integral to all the fuzes of this series.
CHARACTERISTICS
Nn SUM)
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.726 lb
YrT
NA
NA
Tetryl
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Self-destruct time NA
Delay time UGT-2 (0.01
sec) others
nondelay
3-113
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FSTC-CW-07-100-73
Fuze, point detonating, UGT, UGT-2, UGT-3, and 3GT
.87"
7.78"
1.61"
DIA
_1.25" DIA
10 TN
)leg. 511818
FUNCTIONING DESCRIPTION
On firing, setback forces the stirrup (3) to the rear over the primer
carrier clamping spring (4) which engages the shoulders on the inner
surface of the stirrup, and locks the stirrup to the primer carrier (5).
On impact, the stirrup, primer carrier and primer (9) move forward, and
the primer strikes the fixed firing pin initiating the detonator,
booster (7), and main explosive charge in the projectile.
(No disassembled view available)
3-114
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FSTC-CW-07-100-73
Fuze, point detonating, UGT, UGT-2, UGT-3, and 30T
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm, Guns 141902/30, 111933, M1936
(F-22), M1938/39, M1939 (USV) &
141942
107-mm, Guns, 141910/30, 141940 &
141941
122-mm, Tank guns 141943 (0.25)
'corps guns 141931 & M1931/37
(A-19), SP gun M1944 (A-198);
Howitzers 141910/30 and 141909/37
152-mm, Gun, 141910/34, 141910/30;
Gun Howitzer, 141937 (ML-20);
Howitzer 141909/30 and 141910/37
203-mm, Howitzer 141931 (B-4)
305-mm, Howitzer, M1940 (BR-18)
REFERENCE
None
76-mm HE - F -354U
107-mm, HE - F-420U, F-422L
FRAG HE - 0F420U; SMOKE D-422,
D-422U
122-mm, HE - F-460K, F-460N, F-460U
152-mm, HE -- F-533, F-533K, F-533L,
F-533M, F-533N, F-533U, F-542ShU,
F- 54211
203-mm, HE, F-621
305-mm, HE, VF-724K
3-115
(Reverse Blank)
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DISCUSSION
The 4GT is a setback armed, impact fired fuze used in 52 and 203-mm HE
projectiles. A short delay is achieved by the use of two firing pins,
the first of which on impact, initiates a primer, which flashes through
and ignites a secondary charge to force the second firing pin into the
detonator. A safety pin through the upper part of the fuze immobilizes
the upper firing pin prior to firing.
FSTC-CW-07-100-73
Fuze, point detonating, 4CT
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
4FT
Steel
NA
Tetryl
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Safety pin
Arming distance ?
Arming time ?
Self-destruct time NA
Delay time ?
3-117
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FSTC-CW-07-100-73
Fuze, point detonating, 4GT
7.41"
1.78" DIA
._141" DIA
10 WI
Nal. 511820
FUNCTIONING DESCRIPTION
Upon firing, the upper firing pin (3) moves to the rear and is locked in
position to the primer holder by a spring clip (2). On impact, the
primer holder (6) moves forward against the creep spring (4) and impinges
the primer (5) on the upper firing pin (3). The flash from the primer
passes through a flash channel (7) and ignites the secondary powder
charge (9). The gases from the charge force the second firing pin (10)
into the detonator assembly (11) which initiates the booster (12) and
main charge of the projectile.
(No disassembled view available)
3-118
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FSTC-CW-07-100-73
Fuze, point detonating, 4GT
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
152-mm Guns M1910/30 and M1910/34
152-mm HE,
F-542G,
F-542ShG,
F-542Sh
Gun-Howitzer, M1937 (ML-20)
203-mm Howitzer M1931 (B-4)
203-mm HE,
F-621G
REFERENCE
None
3-119
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, BM
Neg. 511821
DISCUSSION
The BM is a setback armed, impact fired, spitback type fuze used in HEAT
projectiles. In general appearance the fuze is short and squat with
slightly over 1/2" being visible when it is assembled in a projectile.
The striker is made of a light alloy and presents a large sectional area
to ensure sensitivity on impact. One spanner wrench hole is located on
the cylindrical portion just above the junction of the fuze and
projectile.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.60 lb
BM
Aluminum
0.56 in
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Self-destruct time NA
Delay time Instantaneous
3-121
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, BM
i 32
All dimensions in inches
Neg. 511822
FUNCTIONING DESCRIPTION
Upon firing, the arm: 'g sleeve (3) sets back and compresses the arming
sleeve spring (4). Ti ,n centrifugal force causes the three sleeve
retaining balls (9) tc move outward. After the force of setback has
ceased, the arming sleeve spring expands, moving the arming sleeve
forward until the two firing pin retaining balls (5) are released from
their housings in the firing pin guide (2). The striker (1) and the
firing pin (6) are now free to move rearward. Impact drives the striker
and firing pin rearward so that the firing pin pierces the thin brass
closing cup (7) and stabs the first charge of the primer detonator
assembly (8). The flash from the primer detonator assembly initiates
the booster at the base of the main explosive charge.
(No disassembled view available)
3-122
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, BM
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm Gun M1927 and M1943
Tank Gun, M1927/32 Gun,
M1902/30, M1933, M1936
(F-22), M1938/39, M1939
(USV) and M1942 (ZIS-3)
REFERENCE
76-mm HEAT BP-344A, BP-350M,
BP-353A, BP-353AM
BP-354AM
Addendum No. 2 dated 20 March 1953 to PA Memorandum Report MR-23,
dated October 1952.
3-123
(Reverse Blank)
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STC-CW-0 I 00-73
Fuze, point initiating, base net/mating, SKS
Neg. 511823
DISCUSS-MN
The 0E9 is a point initiating, base detonating fuze used With 122nmm
HEAT projectiles. The fuze is armed by setback and centrifugal force:
and includes an .out.-of-line detonator locked in plane by a pyrotechnic
arming delay psllet.
A removable ptorective cap protects the nose membrane during transporta-
tion and handling, and must be removed prior to firing.
CHARACTERISTICS
Fuze Assembly?:
Body material --------- Aluminum
Weight ---------------- 0.af lb
Markings -------------- TAB
Booster
Body material --------- Aluminum
Body length ----------- 0.669 in
Explosive ------------- ?
Explosive weight -----?
-
Functional Data:
?Arming method -------- Setback &
centrifugal
force:
Firing method -------- Impact
Safety devisee -z----- Onto-of-line
detonator
Arming distance --ma-- ?
ArMing time ---------n
Self-destruct tithe --- MA
Delay time ----------- Instentansou
3-125
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FSTC-CW-07-100-73
Fuze point initiating, base detonating, GKV
The body is constructed of unpainted aluminum and has a black band
painted around the ogive. A cone shaped cam has been positioned forward
of the firing pin to insure fuze functioning regardless of the angle of
impact.
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, the arming delay primer moves to the rear against its spring
and is initiated by the fixed firing pin. The resulting flame passes
through a channel in the side of the rotor housing and ignites the pyro-
technic (black powder) arming delay pellet holding the rotor locking
detent in position. As the delay pellet burns, centrifugal force forces
the detent and its spring loaded counterpart on the opposite side of the
rotor into their respective voids. The rotor is now unlocked, and is
turned to the in line position by centrifugal force. Impact on the nose
from any angle cams the firing pin to the rear to initiate the primer
and the detonator, which spits through the cone of the projectile to
initiate the booster and main charge.
3-126
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?ESTC-CW-07-100-72
Fuze, point initiating, base detonating, WSW
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
IHH-rm, HEAT, BP-63
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD)
3-127
(Reverse Hiark)
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ESTE-CW-07-1.00-73
Fuze point initiating bae detonating, GPV-2
c,s
eg?51
DISCUSSION
The GPO-2 is a setback armed, point initiating, base detonating fuze. It
uses a piezoelectric crystal as the point in element. The fuze
is constructed of unpainted aluminum and has a black steel protective
cap which is removed prior to firing. Two wrench fiats are machined
into the fuze body. Safety features include an out-of-line detonator
and an electrical setback disconnect.
CHARACTERISTICS
Fuse Assembly:
Functional Data:
Body material ---------
Aluminum
Armies method --------
Setback
Weight ----------------
0.42 lb
Firing method --------
Impact
Markings --------------
Booster
Safety devices -------
Out-of-line
detonator
Body material ---------
Steel
and elec-
Body length -----------
Explosive -------------
0.904 in
trical dis-
connect
Explosive weight ------
Arming distance -------
Arming
time
Self-destruct time ----
NA
Delay time ------------
Instantaneou-
3-129
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, GPV-2
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, a spring loaded electrical contact plunger in the center of
the detonator slider and two spring loaded plungers in the slider housing
set back. The tapered plunger in the slider housing cams a locking ball
into a groove in the detonator slider to hold the slider in the out-of-
line position. The other plunger in the slider housing releases the
positive safety balls which holds the slider out of alignment during
storage and handling.
When setback ceases, the tapered plunger releases the locking ball,
allowing a mousetrap spring to align the slider. On slider alignment the
electrical-contact plunger completes a circuit between the piezoelectric
crystal and the electric detonator, arming the fuze.
Impact stresses the crystal providing voltage for the electric detonator
to initiate the spitback element which flashes through to the base of the
shaped charge cone and ignites the heat sensitive detonator, booster, and
main charge.
3-130
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, GPV-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
115-mm Tank gun
122-mm Howitzer D-30
REFERENCE
115-mm HEAT, VBK-4
122-mm HEAT, VBK-6M
LOCKING BALL
SPMNG.LOADED A
PLUNGER (2) 401P.40
DETONATORSLIDER--- 40 p
PLUNGER : .DETOlt BALL--
CONTACT
4r? - ,
.---. ,BALL--
CONTACTCONTACT
ELECTRMAL-
mow
it:St
i
1
1
MOUSE-
TRAP
SPRING
BASE
SHIPPING CAP
40141(
CRYSTAL
'?ANVIL
SMTBACK
ELEMENT
Neg. 511826
BODY
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD).
3-131
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-229
Neg. 511827
DISCUSSION
The V-229 is a point initiating, base detonating fuze of conventional
design, used only on HEAT projectiles. The fuze body is plastic. Three
check balls, positioned above the stirrup, prevent forward movement of
the firing pin, and three steel rollers, positioned at the lower end of
the striker to prevent rearward movement, make this fuze mechanically
boresafe. The fuze is extremely sensitive when armed.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Plastic
0.207 lb
B-229
NA
NA
Primer mix
65.57 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback
Impact
None
Self-destruct time --- NA
Delay time Instantaneous
3-133
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-229
Neg. 511828 POINT DETONATING IMPACT FUZE MODEL V-229, SOVIET
FUNCTIONING DESCRIPTION
On firing, the stirrup (4) sets back and compresses the arming spring (5)
and, at the same time, frees the check balls (3) from the recess and
allows them to drop down into the fuze body. This frees the stirrup for
forward movement, although it is momentarily held rearward by the force
of inertia. After the projectile has left the gun tube, the arming
spring (5) decompresses and forces the stirrup forward until it contacts
the under surface of the striker head (2). This frees the safety
rollers (6) and permits them to drop down into the fuze body, freeing
the striker for rearward movement. On impact, the foil cap (1) is
ruptured, and the striker is driven downward forcing the firing pin (7)
into the primer assembly (8).
Flame from the primer assembly passes through a flash tube to initiate
the booster of the shaped charge.
(No disassembled view available)
3-134
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-229
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Howitzer M1938
REFERENCE
None
122-mm HEAT BP-460A
3-135
(Reverse Blank)
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DISCUSSION
FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-5K
The V5K is a setback armed PIED fuze used on 57-mm antitank aircraft
rockets. The anodized aluminum body is equipped with a plastic nose cap
and contains a graze sensitive feature. Safety during transportation
and handling is provided by locking balls which immobilize the firing
pin. A zigzag sleeve provides a delayed arming effect.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.36 lbs
B5K
Steel
0.472 in
Tetryl
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking balls
Arming distance
Arming time
Self-destruct time NA
Delay time Instantaneous
3-137
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-5K
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, setback force moves the zigzag sleeve to the rear releasing
the three sleeve retaining balls which fall into the fuze body cavity.
As setback force decreases, the sleeve spring which has been compressed
by setback force, expands, moving the sleeve forward to the underside
of the firing pin and releasing the four retaining balls, allowing them
to drop into the fuze body cavity. The fuze is now armed and the firing
pin is held away from the primer detonator by the firing pin spring.
Upon impact, the primer holder is driven against the firing pin which, in
turn, pierces the primer-detonator which ignites the booster. If the
target is hit at a slight angle, the graze weight, which is machined with
a cammed surface, will cause the primer-holder to move forward into the
firing pin, resulting in a detonation.
3-138
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, V-5K
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
57-mm Aircraft rocket launcher
57-mm Rocket HEAT S5K
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD),
3-139
(Reverse Blank)
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FSTC -CW-07 -100-73
Fuze, point initiating, base detonating, VP-7
(No photograph available)
DISCUSSION
The VP-7 is a point initiating base detonating piezoelectric fuze which
is armed by setback and fired by impact with the target, or by a self-
destruct element. The nose element has an aluminum body which contains
the piezoelectric crystal, an anvil and plastic insulation material. A
thin aluminum cover is in turn protected by a removable nose cap. The
base fuze consists of a body assembly (8), a slider assembly (7), a
booster (12), a plastic housing (9), and an aluminum end cap (1). The
body assembly (8) is made from aluminum bar stock; a milled slot in the
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight -
Plastic and
aluminum
0.28 lb
BA-7
Aluminum
NA
PETN
-- 218 gr
Functional Data:
Arming method
Firing method
Safety devices
Setback
Impact
Out-of-line
detonator
Arming distance
Arming time
Self-destruct time 0.003 sec
Delay time Instantaneous
3-141
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FSTC?CW-07-100-73
Fuze, point initiating, base detonating, VP-7
center houses the slider assembly (7). On one side of the slot, the body
assembly contains the self?destruct mechanism consisting of a delay column
(13), detonator (16), spring (24), primer (25), firing pin (23), and black
powder detent (26). The body contains the retaining pin (4), spring (3),
and locking balls (5 & 6) on the other side of the slot. Closing off one
end of the slot is an electrical shorting plate (20 & 21) assembled to the
body with two screws. The slider assembly contains an electrical shorting
switch (14), and electrical arming switch (19), and an electrical detona?
tor (19). The fuze body (8) is cut down at the forward end to accept a
booster cup (12). This assembly is inserted in a plastic sleeve (9); a
plastic insulator and positioning plate (2) is placed over the slider and
body. The fuze cap (1) is then threaded to the plastic sleeve (9). A
metal projection in the center of the fuze cap protrudes through the
plastic insulator and positioning plate to contact the electrical shorting
pin (14) in the slider assembly (7), completing the electrical shorting
circuit.
23 517
24
25
22
Neg. 511832
9
FUNCTIONING DESCRIPTION
Setback, caused by firing the propellant charge, initiates two actions in
the base fuze. In the first action, the locking ball retaining pin (4)
compresses the retaining spring (3). As the locking ball retaining pin
(4) moves rearward, it carries the retaining pin locking ball (5) with it
3-142
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, VP-7
until the ball falls into a clearance groove. In the second action, the
self-destruct primer (25) compresses its setback spring (24) and strikes
the primer firing pin (23). This fires the primer (25), which flashes
through a relay hole (22) to initiate the self-destruct delay detonator
(13) and the black powder detent (26). The black powder detent (26)
burns out, creating a void which releases the pin locking the slider in
position. As the round begins to decelerate, the locking ball retaining
pin (4) is moved forward by the retaining spring (3). When the locking
ball retaining pin (4) moves the length of its passage, the slider lock-
ing ball (6) is free to move into the recess in the locking ball retain-
ing pin (4). The force exerted by the slider springs (20) moves the
slider assembly (7) into the armed position. This eliminates the short
across the electrical detonator contact pin (19). This contact pin was
flush -against the electrical shorting plate (21). In the armed position
the slider electrical detonator (19) is flush against the main detonator
(10). The slider is prevented from moving rearward by the electrical
detonator arming pin (19) which is held in position by the plastic
insulator and positioning plate (2). As the round strikes the target,
the fuze piezoelectric nose element is crushed; the current generated
fires the base fuze electrical detonator (19). The main detonator (10)
then functions, firing the booster (12), which initiates the main charge.
3-143 .
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FSIC-CW-07.-100-73
Fuze, point initiating, base detonating, VP-7
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Grenade, HEAT, Rocket Assisted
PG-7
REFERENCE
VP-7 FUSE
NOSE CLEMENT
Nomfr.?*.
401....
tec
?DE) ROWER' PG-7 MAT GRENADE
(MD ELME VP-7 DNASSEMBLED)
USA Foreign Science and Technology Center Exploitation Report FSTC-CR-20-
65-68e FSIC Exploitation Report CR-20-2-70 dated November 1969
3-144
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DISCUSSION
The ZMGK is a point initiating base detonating fuze used on the wire
guided antitank, 3M6, "Snapper" missile. Arming functions are initiated
by an electrical charge generated by the electronic components within
the missile.
FSTC-CW-07-100-73
Fuze, point initiating, base detonating, ZMGK
The
the
ing
fuze body, as well
nose cap is steel.
are provided by an
CHARACTERISTICS
as most internal components, is made of aluminum,
Safety and insurance against premature function-
out-of-line detonator.
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
3M FR
Aluminum
0.709 in
Functional Data:
Arming method Electric
Firing method Impact
Safety devices Out-of-line
detonator
Arming distance
Arming time
Self-destruct time NA
Delay time Instantaneous
3-145
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Fuze, point initiating, base detonating, ZNIGIC
(No line drawing available)
FUNCTIONING DESCRIPTION
When the missile is fired, setback forces the firing pin to the rear and
holds the detonator slider in the out-of-line position. An electrical
charge is transmitted to the fuze from the electrical components within
the missile, initiating two electric igniters which are connected in
parallel. The flash from the igniters initiates a heat sensitive detona-
tor. The detonator blows off an aluminum keep ring, allowing a locking
ball holding the detonator slider out of alignment to fall into a cavity
in the fuze body. The slider is now aligned and locked in position by a
spring loaded detent and the fuze is armed.
Upon impact, the firing pin initiates the primer detonator in the slider
which in turn initiates the lead in and the spitback detonator. The
detonator then flashes to the booster in the base of the shaped charge
warhead.
3-146
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, ZMGR
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Guided Missile "Snapper" 3M6
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD).
3-147
(Reverse Blank)
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FSTC-CW-07-100-73
Section II.
PEOPLE'S REPUBLIC OF CHINA
1. Introduction
a. A direct comparison of current PRC fuzes with those of Korean
War vintage show remarkable advances in design and quality. A great
number of PRC fuzes are direct copies of Soviet designs, indicating the
use of Soviet drawings and machine tools. The only difference lies in
the use of Chinese markings.
b. Where projectiles are common to both Soviet and PRC weapons,
a PRC copy of the Soviet fuze is usually employed. However, a trend
toward indigenous design has been noted in projectiles peculiar to the
Chinese. Soviet design philosophy has been retained and quality work-
manship including the use of detents and out-of-line detonators for
fuze safety is common.
c. PRC Communist fuze designations at first appear to have no
meaning. The Arabic number is simply a type designation. The key lies
in the Chinese character that precedes the Arabic number. These charac-
ters are sometimes abbreviations of more complex Chinese characters. In
other cases the characters represent a phonetic that resembles the Soviet
spoken word. For example, mortar fuzes that are copies of the Soviet
M series have a Chinese character that translates into "MU" ("EM in
English") which is as close as the Chinese phonetic can come to the
Russian Cyrillic sounds. A second example is the Chinese character
appearing on their copy of the Soviet V-429 fuze. The character
represents "FU" phonetically which approximates the "V" sound.
d. There are some designation markings on copies of Soviet fuzes
appearing both in Chinese characters and English type letters that have
not been deciphered. This may represent a new type designation system
but only two fuzes possessing this type designation have been examined.
e. The Vietnam conflict caused large quantities of sanitized
ordnance to be produced. The PRC produced weapons and ammunition with
no designations, lot numbers, or manufacturing dates, or exerted great
effort to grind this information off the fuzes. Where this was done on
metallic fuzes, the markings were restored and appear in this report.
3-149
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 1 (Artillery)
DISCUSSION
The PRC Type 1 (Artillery) is a setback and centrifugal armed fuze with
a pyrotechnic arming delay and a cocked detonator which acts as a graze
sensitive feature. The robust steel body is painted black, with markings
stamped into the upper body. Waterproofing features currently displayed
in other PRC and Soviet fuzes are not evident.
Type 1 and Type 3 fuzes seldom produce dud rounds due to the dual action
of the impact and graze sensitive features.
CHARACTERISTICS
Fuze Assembly:
Functional Data:
Body material
Steel
Arming method
Setback &
Weight
Markings
0.87 lb
A ,f0--/ A
Firing method
centrifugal
force
Impact
Booster
Safety devices
Centrifugal
Body material
Steel
detents
Body length
1.18 in
Arming distance
Explosive
Tetryl
Arming time
Explosive weight ---
128.81 gr
Delay time
Instantaneous
3-151
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Fuze, point detonating, Type 1 (Artillery)
1.30 DIA
405 2
.13 1.57 014
12601A
23
24
--I.05 DR
I
Neg. 511836
FUNCTIONING DESCRIPTION
Upon firing, the detent sleeve (21) moves down and removes the resistance
from the centrifugal detents (18 & 19). Simultaneously, the setback
firing pin (8) moves down to initiate the primer (13). The resulting
flame ignites the arming delay pellet (20). As the pellet is consumed,
centrifugal force causes the detente to move outward freeing the firing
pin (4). As deceleration commences, the detent sleeve (21) is forced
forward by its spring (10) locking the detents in the outward position.
The fuze is now armed. Upon impact, the firing pin (4) is driven rear-
ward to initiate the primer (12) which in turn initiates the detonator
(16) and booster (17). On graze impacts, inertia causes the primer
carrier (23) to move forward releasing the three locking balls (22). The
compressed spring (15) can now propel the primer carrier (23) and primer
forward to impinge on the firing pin.
3-152
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Fuze, point detonating, Type 1 (Artillery)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
75-mm Recoilless Rifle, Type 52
REFERENCE
75-mm HE-Frag Type ?
(No disassembled view available)
FSTC Exploitation Report, CR-20-161-68
3-153
(Reverse Blank)
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I
FSTC-CN-07-100-73
FUZQ, point detonating, Type 1 (Rocket)
DISCUSSION
The PRC Type 1 (Rocket) fuze is a modified version of the Soviet V-25
fume which arms entirely bY centrifugal force, The heavy steel body is
cadmium plated internally, and moveable parts such as detents have been
chrome plated. All body openings are sealed with plastic rings to make
the fuze completely waterproof. The setback detents and short delay
mode (0.1 sec) employed in the Soviet 2-25 have been eliminated and an
additional centrifugal detent added. This modification increased the
overall length of
CHARACTERISTICS
the body by approximately ?0.45 inch.
Faze Assembly:
Functional Data;
Body material
Steel
Arming method
Centrifugal
Weight -------------
1,53 lb
force
Markings -----------
?d a'
Firing method --------
Impact
Booster
r
Safety devices
Centrifuga
detents
Body material ------
Steel
Arming distance
Body length --------
1.5 in
Arming time ----.
?
Explosive ----------
Tetryl
Belay time -----------
0.025 sec
Ex losive weight
--- 26 gm
37-155
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FSTC-C14-07-100-73
Fuze, point detonating, Type I (Rocket)
2
LW WA Neg. 511838
FUNCTIONING DESCRIPTION
Upon firing, centrifugal force moves the two centrifugal detents (5)
outward which allows the arming sleeve (8) to be forced forward by its
spring (9). The arming sleeve now occupies the space between the detents
(5) and prevents their return to the original position. The firing pin
(3) now has a clear path to the primer (11) but is restrained by the
firing pin spring (4). Simultaneously, centrifugal force has moved the
slider detents (19) to the side and allowed the slider (18) to move
outward, opening the flash channel to the detonator (22). The fuze is
now armed. Upon impact, the firing pin (3) is driven to the rear and
initiates the primer (11). Depending on the position of the delay
selector rod (21), the flash from the primer either directly initiates
the detonator (22) and booster (24) or is diverted through the delay
element (25) to the detonator and booster. In case of a graze impact,
the graze weights (12) cam the primer assembly forward to impinge on the
firing pin.
3-156
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Fuze, point detonating, Type 1 (Rocket)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
140-mm Rocket Launcher
107-mm Rocket Launcher
REFERENCE
140-mm Rocket, HE, 14-14-OF
107-mm Roeket, HE -Frag H-12
(No disassembled view available)
FSTC Exploitation Report, CR-20-122-68
3-157
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 3 (Special)
In
11!'
Neg. 511839
DISCUSSION
The Type 3 (Special) is identical to the Type 1 (Artillery) except for
color and marking. Parts are interchangeable between both fuzes. The
Type 3 (Special) has a black lower body, while the upper body is cadmium
plated and presents a slightly yellow appearance. No explanation can be
given for different nomenclatures on identical fuzes, other than the fact
that two different manufacturing plants are involved.
CHARACTERISTICS
Fuze Assembly:
Body material Steel
Weight 0.87 lb
Markings
Booster
Body material Steel
Body length 1.08 in
Explosive Tetryl
Explosive weight 130 gr
Functional Data:
Arming method Setback &
centrifugal
force
Firing method Impact
Safety devices Centrifugal
detents
Arming distance
Arming time
Delay time Instantaneous
3-159
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Fuze, point detonating, Type 3 (Special)
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the PRC Type 1 Artillery fuze.
(No disassembled view available)
3-160
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Fuze, point detonating, Type 3 (Special)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
75-mm PRC Recoilless Rifle Type 52
REFERENCE
None
75-mm HE-Frag. T28
3-161
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 5
DISCUSSION
The PRC Type 5 point detonating fuze is in most cases identical to the
Soviet M5 mortar fuze. Two differences which have been noted are (1) a
groove 0.325 inch wide and .05 inch deep at the lower end of the fuze
body, (2) the firing pin head is similar to the one in the Soviet M4,
PD, Mortar fuze. Some fuzes have been recovered with all factory
markings removed.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Plastic
0.661 lb
Steel
1.35 in
Tetryl
96 gr
Functional Data:
Arming method Setback
Firing method Impact
Safety devices None
Arming distance
Arming time
Delay time Instantaneous
3-163
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Fuze, point detonating, Type 5
1.54 DIA.
1.41 DIA
14 TPI
Neg. 511841
FUNCTIONING DESCRIPTION
Upon firing, setback causes the sleeve (1) to move rearward, compressing
the safety spring (3), and engaging the three prongs of the arming
stirrup (4). When acceleration ceases, creep force causes the locked
sleeve and stirrup to move forward and uncover the safety plug (5)
which drops out-of-line between the firing pin and detonator. Upon
impact, the firing pin is driven into the detonator which, in turn,
initiates the booster (7).
(No disassembled view available)
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Fuze, point detonating, Type 5
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm Mortar, Type 31, and Type 63
REFERENCE
60-mm HE-Frag--Type 7
FSTC Exploitation Report, FSTC-381-3030, dated Jan 1964
3-165
(Reverse Blank)
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Fuze, point detonating, Type 6
Neg. 511842
DISCUSSION
The PRC Type 6 fuze is an exact
single exception of markings.
CHARACTERISTICS
copy of the Soviet M-6 fuze with the
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Plastic
0.28 lb
Steel
0.56
0.56 in
Tetryl
90.9 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
Setback
Impact
Out-of-line
detonator
0.75 - 10 in
Instantaneous
3-167
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Fuze, point detonating, Type 6
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Soviet M-6 fuze.
(No disassembled view available)
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Fuze, point detonating, Type 6
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm Mortar Type 53
REFERENCE
None
82-mm HE-Frag Type 53; M-30
3-169
(Reverse Blank)
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Fuze, point detonating, Type 7 (Artillery)
(Copy of Soviet GVMZ-7 fuze)
Neg. 511843
DISCUSSION
The PRO Type 7 (artillery) fuze is a direct copy, except markings, of
the Soviet GVMZ-7 fuze. It is known to be employed in the PRC 120-mm
mortar, and can be used in other mortar and howitzer applications. The
body appears to be unpainted anodized steel with a dark green protective
shipping cap.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Steel
0.946 lb
Booster
Body material Steel
Body length
Explosive
Explosive weight
1.1 in
Tetryl
--- 14.74 gm
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Setback
Impact
Interrupter
Self-destruct time --- None
Delay time Instantaneous
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Fuze, point detonating, Type 7 (Artillery)
(Copy of Soviet GVMZ-7 fuze)
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Soviet GVMZ-7 fuze.
(No disassembled view available)
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Fuze, point detonating, Type 7 (Artillery)
(Copy of Soviet GVMZ-7 fuze)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
120-mm PRC Type 53 Mortar
REFERENCE
Picatinny Arsenal EOD Project 76-006
120-mm HE-Frag Type unknown
3-173
(Reverse Blank)
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Fuze, point detonating, Type 7 (Mortar)
DISCUSSION
The PRC Type 7 (Mortar) fuze is a setback armed, point detonating fuze
which is an improved version of the Soviet M-50. The body is machined
from brass stock, and has a protruding striker head which produces
superquick functioning rather than nondelay as in the case of the M-50.
By US standards this fuze is neither bore safe nor detonator safe. A
clear cellulose cover has been glued over the nose of the fuze to provide
some degree of waterproofing. The booster consists of an upper, an
intermediate, and a lower charge, of 0.500 gm mercury fulminate, 0.250 gm
of mercury fulminate/TNT, and 2.860 gm of TNT, respectively.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Brass
0.34 lb
$ 5196
Copper
1.85 in
See above
See above
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking balls
Arming distance
Arming time
Delay time Superquick
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Fuze, point detonating, Type 7 (Mortar)
FUNCTIONING DESCRIPTION
Upon firing, setback forces move the arming sleeve (2) to the rear com-
pressing the firing pin spring (3). This action releases the retaining
ball (1) and allows it to fall into the body cavity (6). When the
setback force decreases, the compressed spring (3) expands and moves the
arming sleeve forward to allow the firing pin retaining balls (5) to
drop into the body cavity. This action removes the restraint on the
firing pin (4). Upon impact, the firing pin is driven rearward to
impinge upon the primer (7), which in turn initiates the detonator (8).
(No disassembled view available)
3-176
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Fuze, point detonating, Type 7 (Mortar)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm Mortars Type 31 and Type 63
REFERENCE
60-mm HE-Frag Type 7
FSTC Exploitation Report, CR-20-64-67 dated May 1968
3-177
(Reverse Blank)
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Fuze, point detonating, Type 8
Neg. 511846
DISCUSSION
The Type 8 point detonating fuze was first encountered during the Korean
War. It is still found occasionally, but has been replaced to a large
extent by more modern fuzes.
The body may be constructed of either brass
slender appearance, it is setback armed and
60-mm cast iron mortar projectile.
There are known to be three different lengths for this fuze, however, the
internal design and function remains the same.
CHARACTERISTICS
or aluminum and has a long
is normally employed in the
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Brass
0.36 lb
4
Brass
1.5 in
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking ball
Arming distance
Arming time
Delay time Instantaneous
3-179
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Fuze, point detonating, Type 8
350
1(59
1165 DIA
1 095 DIA
TPI
4eg . 511847
10
FUNCTIONING DESCRIPTION
Upon firing, setback moves the setback sleeve (4) to the rear, striking
and mating with the beveled setback locking ring (8). The primer
carrier locking ball (5) falls out of its recess in the primer carrier
housing (3), allowing the primer carrier to move forward to the primer
carrier stop collar (2). At this point the two primer safety balls (10)
are cammed out into the recess in the end of the primer carrier housing
and the fuze is armed.
Upon impact, inertia holds the primer carrier against the stop collar
while the firing pin (1) is forced to the rear, striking and initiating
the primer (7), and, in turn, the detonator (9) and booster.
(No disassembled view available)
3-180
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Fuze, point detonating, Type 8
WEAPONS AND PROJECTILES USED WITE
Weapons
Projectiles
60-mm Mortars Type ?
82-mm Mortars Type ?
REFERENCE
None
60-min HE Type ?
82-mm HE Type ?
3-181
(Reverse Blank)
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Fuze, point detonating, Type 9
DISCUSSION
The Type 9 point detonating fuze is setback armed and impact fired. The
brass body is machined from bar stock and threaded to receive the firing
pin-nose assembly and the detonator assembly. A screwdriver slot has
been cut in the nose plug. Identification markings may, or may not, be
stamped on the body.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Brass
0.38 lb
A
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Safety wire
distance
Arming
Copper
Arming time
1.65
in
Delay time
Nondelay
TNT
3.4 gm
3-183
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Fuze, point detonating, Type 9
0.75
2.06
MA . DIA. 1.08
TPI-12
3.5.4
086
1 26
040 ?1+?^1
FUNCTIONING DESCRIPTION
Prior to
removed.
the rear
are
bent
All dimensions in inches
Neg. 511849
assembling the fuze to the projectile, the
Upon firing, setback causes the arming
and slip over the arming clip (5). The
inward, permitting the arming sleeve to
holder (7). With the arming sleeve fully to the
safety wire (4) is
sleeve (3) to move to
legs of the arming clip
move over the primer
rear, the solid block
between the primer (6) and the firing pin (1) is removed.
Upon impact, the primer holder (7) moves forward and the primer (6)
impinges on the firing pin. The flash from the primer initiates the
detonator and booster (9).
(No disassembled view available)
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Fuze, point detonating, Type 9
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm Mortars,
Type
31 and Type 63
60-mm Projectile,
HE-Frag,
Type
?
82-mm Mortar,
Type
53
82-mm Projectile,
HE-Frag,
Type
?
120-mm Mortar,
Type
53
120-mm Projectile,
HE-Frag,
Type
?
REFERENCE
FSTC Exploitation Report, FSTC-CR-20-19-66, dtd Mar 66
3-185
(Reverse Blank)
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Fuze, point detonating, Type 12
DISCUSSION
The Type 12 fuze is setback armed and impact fired. With the exception
of its markings, it is an exact copy of the Soviet M-12 Mortar fuze.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Steel
1.18 lb
Booster
Body material Steel
Body length 1.50 in
Explosive Tetryl
Explosive weight 0.55 lb
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
Setback
Impact
Out-of-line
detonator
Superquick
and delay
(0.01 sec)
3-187
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Fuze, point detonating, Type 12
(No line drawing available)
FUNCTIONING DESCRIPTION
Functioning of the Type 12 is identical to the Soviet Models M-6 and M-12
fuzes.
(No disassembled view available)
3-188
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Fuze, point detonating, Type 12
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
120-mm Mortar, Type 53
REFERENCE
None
120-mm Frag-HE type ?
3-189
(Reverse Blank)
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Fuze, point detonating, Type 51
(No photograph available)
DISCUSSION
The Type 51 point detonating fuze is the first of a series of impact
fired, centrifugal armed fuzes manufactured in China, by plant number
524, later redesignated as factory number 54.
The fuze body is of two piece steel construction with a removable steel
nose cap. Some fuzes have been recovered with the nose caps painted red
as well as unpainted.
CHARACTERISTICS
Fuze Assembly:
Body material Steel
Weight 0.83 lb
Markings _-
Booster
Body material -- - - - - Aluminum
Body length 1 in
Explosive -- - - - - RDX
Explosive weight - 14.17 gm
Functional Data:
Arming method Centrifugal
force
Firing method -- - - - - Impact
Safety devices Centrifugal
detents
Arming distance - ?
Arming time
Delay time Instantaneous
3-191
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Fuze, point detonating, Type 51
Five centrifugal interlocked detents prevent the firing pin from con-
tacting the primer prior to their being released by deceleration and
centrifugal force.
16 TN
11/ "Mor
Wes. 511851
FUNCTIONING DESCRIPTION
Upon firing, setback forces the firing pin (3) downward compressing the
firing pin spring (4) and locking the centrifugal detents (6) in place.
As acceleration diminishes, the firing pin spring (4) forces the firing
pin forward unlocking the detents. Centrifugal force can now act to
pivot each detent against the flat coiled spring (5), clearing the path
between the firing pin and primer (8). The fuze is now armed. Upon
impact, the wooden striker drives the firing pin into the primer. If
the nose cap is left on, the primer carrier moves forward, striking the
firing pin, which initiates the primer and explosive train.
(No disassembled view available)
3-192
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Fuze, point detonating, Type 51
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
105-mm Howitzer Type ?
REFERENCE
None
105-mm HE Frag Type ?
3-193
(Reverse Blank)
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DISCUSSION
The PRC Type 53 is an impact fired, centrifugal armed fuze which is
identical internally to the Type 51. The major differences between the
Type 51 and Type 53 are that the Type 53 has a larger diameter booster,
and a detonator, which is larger in both diameter and length. Identifi-
cation markings may, or may not, be present. The overall color is
aluminum with a red nose cap.
CHARACTERISTICS
FSTC-CW-07-100-73
Fuze, point detonating, Type 53
Fuze Assembly:
Body material
Weight
Markings
Steel
0.866 lb
Booster
Body material ------ Aluminum
Body length ------- 1 in
Explosive BOX
Explosive weight ?
I
Functional Data:
Arming method Centrifugal
force
Firing method Impact
Safety devices Centrifugal
weights
Arming distance -- ?
Arming time ?
Delay time Instantaneous
3-195
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Fuze point detonating, Type 53
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Type 53, Model I.
(No disassembled ,view available)
3-196
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Fuze, point detonating, Type 53
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
105-mm Howitzer, Type ?
REFERENCE
None
105-mm HE-Frag Type ?
3-197
(Reverse Blank)
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DISCUSSION
The Type 53 Model 1 fuze is similar in most respects to the Type 53 fuze.
FSTC-CW-07-100-73
Fuze, point detonating, Type 53, Model 1
Differences that have been
and staking, rather than
The fuze body appears to
cap painted red.
CHARACTERISTICS
noted are inclusion of a small Type 51 booster,
a pin, to secure the upper and lower fuze bodies.
be made from stainless steel with a steel nose
(Fuze Assembly:
Functional Data:
Body material
Steel
Arming method
Setback &
1 Weight
; Markings
Booster
0.87 lb
t
/
Firing method
centrifuga
force
Impact
Body material
Steel
Safety devices
Centrifugal
Body length
1.00 in
detents
Explosive
RDX
Arming distance
Explosive weight
14.17 gm
Arming time
Delay time
Superquick
3-199
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Fuze, point detonating, Type 53, Model 1
1 010 MAW DM
40 TP
330
SAM
FUNCTIONING DESCRIPTION
Upon firing, setback seats the firing pin (4) firmly down on the firing
pin spring (5) and the centrifugal weights (7), thus preventing the
centrifugal weights from moving outward. As the setback force decreases,
the firing pin spring expands, moving the firing pin forward and releas-
ing the centrifugal spring. Centrifugal force can now pivot the five
centrifugal weights to the side, clearing the firing pin. The primer (9)
and firing pin are now separated only by the firing pin spring and the
fuze is fully armed. Upon impact, the primer and firing pin are driven
together, and the primer flash initiates the detonator (11), which in
turn initiates the booster and main charge.
(No disassembled view available)
3?200
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Fuze, point detonating, Type 53, Model 1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
105-mm Howitzer, Type 7
REFERENCE
105-mm HE-Frag Type ?
FSTC Exploitation Report, FSTC -CR-20 -21 -66
3-201
(Reverse Blank)
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Fuze, point detonating, Type 53 Model 2
DISCUSSION
The Type 53 Model 2 is similar in appearance to the Type 53 and Type 53
Model 1, but is slightly longer in overall length and has a smaller
overall diameter.
The Type 53 Model 2 consists of the basic Type 53 design, to which has
been added a setback detent, detent spring and arming sleeve. The set-
back detent prevents movement of the centrifugal detents until sustained
setback has occurred and the projectile has cleared the gun tube. The
arming sleeve prevents the centrifugal detents from returning to their
original position under the firing pin.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Steel
0.88 lb
Booster
Body material Steel
Body length 1.2 in
Explosive RDX
Explosive weight ?
Functional Data:
Arming method Setback &
centrifugal
force
Firing method Impact
Safety devices Centrifugal
detents
Arming distance
Arming time
Delay time Instantaneous
3-203
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Fuze, point detonating, Type 53 Model 2
FUNCTIONAL DESCRIPTION
(MARKINGS)
2 _47_ 54
157
(MARKINGS) I 54
IN INK
BOOSTER THOS ARE LEFT HO
Neg. 511857
I 70
1417 MA4 DIA
METRIC PITCH 25
APPROX 10T PI
3 822
Upon firing, setback causes the setback detent (13a) to move rearward
against the setback spring (13b) and to remain in this position during
acceleration. With the setback detent removed from the path of the
centrifugal detent (7), centrifugal force causes the centrifugal detents
to pivot outward against the centrifugal spring (8). Creep action moves
the arming sleeve (9) forward preventing the centrifugal spring from
returning the detents to their original position under the firing pin (5).
The fuze is now armed and the firing pin and detonator (11), are separated
only by the firing pin spring (6).
Upon impact the firing pin (5) is driven rearward by the striker (3)
initiating the primer-detonator. The flash from the detonator initiates
the lead cup (15) and booster (16). If the projectile impacts at a flat
angle, or if the nose cap is left on, the detonator housing (10) moves
forward, causing the primer detonator to impinge on the firing pin and
initiate the explosive train.
3-204
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:Rae peint letonat1rp2,
WEAPONS AND PROJECTILES USED DTTA
WeappoS
FSTD- OfT.0?-100- 73
53 Hodel 2
75-mm Recoilless Rifle Type ff
OOSE OAP
Ovem
000 RCOO
projectiles
75-1733 Projectile HE Type ?52
gitilvi
c# Per Pf Fti GAL. Vs esmT
ASSEmilLY
*PACT
TOSOVER TOE
OUT
SLEEVE
SETSACO
ON 'SONO
SPOHOO
SOME
FLOAT
?LUMEN SOW(
PROP:MO
ROOMS.
Diu
315a
WACER
ENO SOOrrER
?SOFOOS CAO
SEOOACK
LOCO FA
SPAZEok
PRIMER
MIMEO AETAOstO
C4OPSOARO
"PASEO
BOOSTER ?COO
WASPS'S
DISPOCO4PKIAA,
OtSOCIOP
Cook GIME
Neg. S11858
REFERENCE
Hope
SEALMO THREAD
3-205
(Reverse Blank)
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SEAL
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FSTC-CW-07-100-73
Fuze, point detonating, Type 88
DISCUSSION
The Type 88, setback armed, point detonating fuze is made in two versions,
both of which are copies of the original Japanese (Type 88) design. Both
versions appear identical externally except for markings. One version
stamped "E3" (Instantaneous), is designed for lower velocity howitzer-
mortar ammunition. The second version stamped "\j" (Short Delay) is
used in higher velocity gun ammunition.
The conical body is constructed of brass with a protruding aluminum
striker. An overall coating of shellac or varnish provides some resistance
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Brass
0.38 lb
Functional Data:
Arming method
Firing method
Safety devices
distance
Setback
Impact
Safety wire
Arming
Brass
Arming time
1.05
in
Delay time
Instantaneous
Tetryl
17 gr
3-207
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FSTC-CW-07-100-73
Fuze, point detonating, Type 88
to moisture. Midway of the body is a safety fork with a wire loop
attached.
Internal components in both versions are the same except for the stirrup,
which has been strengthened to provide increased resistance for arming
high velocity fuzes used in gun ammunition.
124 DIA
91 DIA
12 7 TPI
Neg. 511860
FUNCTIONING DESCRIPTION
Prior to firing, the safety fork must be removed. Upon firing, setback
force causes the setback sleeve (6) to move to the rear, compressing and
mating with the prongs of the stirrup (7). Simultaneously, the knurled
base of the firing pin sets back and restrains the four brass centrifugal
detents (5) from moving outward. When setback force has ceased, centri-
fugal force frees the safety blocks and causes them to move outward. This
removes the obstruction to the downward movement of the firing pin. The
fuze is now armed.
Upon impact with the target, the firing pin (1) compresses the firing pin
spring (2) and initiates the primer (8), which in turn initiates the
detonator (9) and booster (10).
3-208
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FSTC-CW-07-100-73
Fuze, point detonating, Type 88
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
70-mm Howitzer
REFERENCE
None
70-mm HE-Frag Type ?
(No disassembled view available)
3-209
(Reverse Blank)
i
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DiSeESSION
The PRO Type 100-3 is the most
heweS. Severed of t
The ea.
shipeln
proofed
only sa
CeARACTER
device is a 81
FSTOACW-07-100-Te
eating, Type. 100-3
cent version c
Type 100-1 hese havt
and the means of a
een found with the steel s
been Made 011 Phefloli
emitIrcular wire clip.
ar wire wl
eeh recovein
:bching the
:pping can
poendo
ad ed
-fuze Assem
Body mat
ight -
kings
Body m
Body length
Explosive -----------
Explosive we'
' Met
or plastic Fi
0.28 lb Sc
etbeek
b.ear
bndelay
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FSTC-CW-07-100-73
Fuze, point detonating, Type 100-3
(No line drawing available)
FUNCTIONING DESCRIPTION
The shipping cap is removed prior to firing. The closing cup and primer
housing are held in place by the shear pin which blocks the firing pin
and firing pin disk in position. The primer is held in position at the
bottom of the primer housing by a locking plate which rides in slots cut
through the primer housing. The locking plate spring helps to hold the
locking plate and primer in the lower end of the primer housing if the
shear pin is sheared by setback. Upon firing with low velocity weapons,
the shear pin remains intact until impact. Upon impact, the shear pin is
sheared and the primer housing moved rearward by the closing cup. The
firing pin and firing pin disk are also forced rearward. Inertia causes
the primer and locking plate to move forward compressing the locking
plate spring and impinging the primer on the firing pin, which initiates
the detonator and booster.
Ne8? 511862
3-212
0 0 0
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FSTC-CW-07-100-73
Fuze, point detonating, Type 100-3
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm PRC mortars, Type 31 & 63
82-mm Mortar Type 42
102-mm Rocket Launcher Typ?
REFERENCE
None
6L-mm HE-Frag Type 7
82-mm HE Type 42
E Type 488
leve-tae Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 429
(No photograph available)
DISCUSSION
The PRC Type 429 fuze appears
fuze except for markings.
CHARACTERISTICS
to be an identical copy of the Soviet V-429
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Steel
0.95 lb
1k429 A
Steel
1.8 in
Tetryl
Explosive weight --- 192.20 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
Setback
Impact
Out-of-line
detonator
Instantaneous
and delay
3-215
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FSTC-CW-07-100-73
Fuze, point detonating, Type 429
(No line drawing available)
FUNCTIONING DESCRIPTION
Identical to the Soviet V-429 fuze,
(No disassembled view available)
3-216
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FSTC-CW-07-100-73
Fuze, point detonating, Type 429
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
122-mm Gun D-74
130-mm Gun M-46
152-mm Howitzer, D-20
REFERENCE
None
122-mm Frag-HE OF-472
130-mm Frag-HE OF-482
152-mm Frag-HE OF-540
3-217
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 3711
(No photograph available)
DISCUSSION
The frM fuse is essentially a Brandt type, point detonating, nondelay
fuze, with an inertia feature for graze functioning. Variations of this
fuze have been observed in a number of PRC projectiles. With the
exception of dimensions and a variation of the detonator arrangement, it
is the same as the PRC Type 8.
CHARACTERISTICS
Fuze Assembly:
Body material Steel
Weight 0.36 lb
Markings 3711 ftM
Booster
material Steel
Body
Body length
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking balls
Arming distance
time
Arming
1.20
in
Delay time
Nondelay
Explosive Mercury
fulminate
& Tetryl
Explosive weight 2.75 gm
3-219
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FSTC-CW-07-100-73
Fuze, point detonating, Type 3711
(No line drawing vailable)
FUNCTIONING DESCRIPTION
Upon firing, setback causes the safety collar to move rearward compressing
the safety spring. The collar becomes wedged on the tapered surface at
the rear end of the inertia element assembly. The primer locking ball is
thus released to move outward and free the primer holder assembly. During
flight, the primer holder assembly moves forward by creep action until its
forward end contacts the firing pin spring guide.
Upon impact, the firing pin and striker assembly is pushed rearward, while
the inertia element assembly moves forward. The primer holder assembly
moves forward more rapidly than the inertia element and its assembly
components. As the firing pin enters the primer body cavity, the two
primer detent balls are pushed outward to protrude into the cavity
between the forward edge of the inertia element, the firing pin spring
guide, and the firing pin. This locks the primer holder assembly to the
forward moving inertia element. The momentum of the entire inertia
assembly impales the primer on the firing pin to initiate the primer.
The primer initiates the detonator and in turn the booster and main
charge.
3-220
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FSTC-CW-07-100-73
Fuze, point detonating, Type 3711
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm Mortar Type ?
REFERENCE
None
60-mm HE Type ?
(No disassembled view available)
3-221
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Universal
(No photograph available)
DISCUSSION
The PRC Universal fuze is a simple setback armed, impact fired fuze
which has been replaced by more modern types. These fuzes are identical
in internal design but vary somewhat in exterior design and dimensions
for ballistic purposes. There are also differences in shipping cap
design. Some fuzes have been found with a shipping cap, others have
been found with nothing but a wax sealing compound at the forward end.
Markings also vary between individual models and some fuzes have been
found unmarked.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Brass or
plastic
0.62 lb
50 5 22PA
Steel
1.38 in
RDX/TNT
220 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
NA
Impact
Shear Wire
Instantaneous
3-223
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FSTC-CW-07-100-73
Fuze, point detonating, Universal
The only safety device found in this fuze is a shear wire which holds the
firing pin stationary. This fuze has not been encountered in recent years
and has probably been replaced.
1 31
275
FUNCTIONING DESCRIPTION
1 S,5 DIA
?142 DIA
10 TP1
Neg. 511863
Prior to firing, the shipping cap, if present, must be removed. Upon
firing at low initial velocities, the shear wire (1) is not sheared until
impact with the target. At higher initial velocities, the shear wire is
sheared when the projectile is fired, resulting in seating the entire
firing pin assembly (2) on the base of the forward cavity (3).
Upon impact with the target under low velocity conditions, the shear wire
is severed and the firing pin (2) is driven to the rear to initiate the
primer (5). Under high velocity conditions inertia causes the primer (5)
and spring retainer (4) to compress the firing pin spring and impinge the
primer on the firing pin to initiate the explosive train.
3-224
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FSTC-CW-07-100-73
Fuze, point detonating, Universal
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
60-mm Mortar Type 31
82-mm Mortars Type 20 and 53
REFERENCE
None
60-mm HE -FRAG, Type ?
82-mm HE FRAG Type ?
(No disassembled view available)
3-225
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type 1 (75-mm Recoilless Rifle)
CHICON
(No photograph available)
DISCUSSION
Four PRC fuzes identified as the TS-1, TS-2, Type 1 (1964) and Type 1
(1967) are nearly identical in external appearance. Some minor internal
differences may exist, but the function of all four fuzes remains the
same.
The Type 1 (1967) differs from the others in the following respects:
(a) the ogive tapers to a straight 0.5 inch shoulder; (b) the button type
striker has been replaced by a mushroom shaped striker; and (c) the
graze weight has been replaced by an enlarged booster cup.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
0.38 lb
X1A 42 \
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking balls
Arming distance
Arming time
Aluminum
Delay time
Instantaneous
0.5 in
Tetryl
0.37 gm
3-227
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Fuze, point initiating, base detonating, Type 1 (75-mm Recoilless Rifle)
CHICOM
I NOUS IN BOSSIER
Neg. 511864
FUNCTIONING DESCRIPTION
Identical to the TS-1, TS-2, and Soviet G1C-2,
(No disassembled view available)
3-228
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Fuze, point initiating, base detonating, Type 1 (75-mm Recoilless Rifle)
CHICON
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
75-mm Recoilless Rifle Type 52
REFERENCE
75-mm Fin Stabilized Heat Type ?
FSTC Exploitation Report CR-20-3-72 dated May 1971
3-229
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type TS-1 and TS-2
DISCUSSION
The PRC Type T5-1 and TS-2 are copies of the Soviet GK-2 and PRC Type 1
(Recoilless Rifle) fuzes. They are the first PRC fuzes recovered that
are identified by an alphabetical designation. The body is made of die
cast anodized aluminum. A steel nose cap is secured by a pull wire.
Arming delay is achieved by using a zigzag arming sleeve.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Aluminum
0.39 lb
TS -2it
Booster
Body material Aluminum
Body length 0.5 in
Explosive Tetryl
Explosive weight 37.00 gm
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Locking balls
Arming distance
Arming time
Delay time Instantaneous
3-231
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FSTC-CW107-100-73
Fuze, point initiating, base detonating, Type TS-1 and TS-2
L57 DIA
1.41 DIA
IO TPI
Neg. 511866
FUNCTIONING DESCRIPTION
Upon firing, setback forces overcome the resistance of the arming sleeve
spring (6) and force the arming sleeve (14) rearward releasing the lock-
ing ball (5) which falls into the cavity of the fuze body. The arming
sleeve continues to the rear, delayed by the zigzag slot and the guide
pin (16) until stopped by the four firing pin retaining balls (8). As
setback force decreases, the arming sleeve spring (6) forces the arming
sleeve (14) forward and releases the four firing pin retaining balls (8).
The fuze is now armed. Upon impact, the striker (4) and firing pin (7)
are driven to the rear, where the firing pin impinges on the detonator
(10) which in turn initiates the relay charge (13) and booster in the
base of the projectile. If the projectile impacts on a flat angle, the
graze weight (12) force the primer holder and primer forward into the
firing pin.
3-232
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type TS-1 and TS-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
75-mm Recoilless Rifle Type 52
REFERENCE
75-mm Fin Stabilized HEAT Type ?
(No disassembled view available)
FSTC Exploitation Report, FSTC-CR-20-16-71
3-233
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point detonating, Type 137, Type A3 and Rocket Fuze, (PIBD)
(No photograph available)
DISCUSSION
The Type 137 fuze is a member of a simple, unsafe family of fuzes used
on PRC mortars and rockets.
The fuze components are made of a variety of material and may be cast,
stamped or machined of magnesium or brass. Except for the detonator
assemblies and slight variations in size, the components for the mortar
and rocket fuzes are identical. The Type 137 and A3 fuzes contain
boosters while the fuze for the 87-mm HEAT rocket contains a spitback
detonator.
CHARACTERISTICS
Fuze Assembly:
Body material Magnesium
or brass
Weight 0.28 lb
Markings None
Booster
Body material Steel or
brass
Body length 1.27 in
Explosive Tetryl &
mercury
fulminate
Explosive weight 18.14 gm
Functional Data:
Arming method Setback
Firing method Impact
Safety devices Shear Wire
Arming distance
Arming time
Delay time Instan-
taneous
3-235
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FSTC-CW-07-100-73
Fuze, point detonating, Type 137, Type AS and Rocket Fuze, (PIED)
ANTCREEP
SPRING
PRIMER
PRIMER
MOUSING
DETONATOR
Neg. 511867
ft
ENING
PM
mETRiC THROADS
Neg. 511868
29'
us"
FUNCTIONING DESCRIPTION
Prior to firing, the shipping cap is normally removed. Upon firing, at
setback forces above 4,000 g's, the shear wire fails and the assembly
seats itself on the wall separating the forward and rear cavity within
the fuze body. The firing pin and primer are now separated by the
retainer spring and primer retainer. Upon impact with the target, the
plunger and firing pin are held rearward, and the primer is forced
forward by inertia to impinge on the firing pin.
(No disassembled view available)
3-236
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Fuze, point detonating, Type 137, Type A3 and Rocket Fuze, (PIBD)
WEAPONS AND PROJECTILES USED WITH
Weapons
Fuze
Projectiles
60-mm Mortar
102-mm Rocket Launcher
87-mm Rocket
REFERENCE
None
Type 137
Type A3
Type PIED
60-mm Projectile, HE
102-mm Projectile, Rocket, HE
87-mm Rocket, Antitank (HEAT)
3-237
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type unknown, (for 57-mm HEAT
projectiles)
(No photograph available)
DISCUSSION
The spitback fuze for the PRC 57-mm recoilless HEAT projectile is armed
by a combination of setback and centrifugal force. The aluminum body is
similar in external appearance to the US 57-mm HEAT fuze, internally the
fuze components and arrangements are completely different. Functional
components of the fuze resemble those used in the PRC Type 5 and original
models of the Type 53 fuzes; they include, brass centrifugal detents, a
flat coiled centrifugal spring, a wooden striker and a brass firing pin.
CHARACTERISTICS
Fuze Assembly:
Body material Aluminum
Weight 0.34 lb
Markings
Booster
Body material Aluminum
Body length 1.85 in
Explosive Tetryl
Explosive weight
Functional Data:
Arming method Setback &
centrifugal
force
Firing method Impact
Safety devices Centrifugal
detents
Arming distance
Arming time
Delay time Instantaneous
3-239
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type unknown, (for 57-mm HEAT
projectiles)
FUNCTIONING DESCRIPTION
Upon firing, setback forces seat the firing pin (2) on the centrifugal
detents (3) and restrain any motion. As deceleration takes place,
centrifugal force causes the centrifugal detents to rotate against the
tension of the centrifugal spring and clear a path for the firing pin
(2). The firing pin is retained in its forward position by the tension
of the firing pin spring (4).
Upon impact, the wooden striker (1) forces the firing pin (2) downward
against the tension of the firing pin spring (4) and initiates the
primer (5). The flash from the primer in turn ignites the detonator (6)
which spits back through a flash channel to the base detonator located
in the projectile.
3-240
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Type unknown, (for 57-mm HEAT
projectiles)
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
57-mm Recoilless Rifle
REFERENCE
None
57-mm HEAT Type ?
(No disassembled view available)
3-241
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FSTC-CW-07-100-73
Section
CZECHOSLOVAKIA
1. Introduction
a. Czechoslovakia maintains a small independent capability to
design and produce artillery fuzes. In most cases their indigenous
designs follow trends established by Germany during World War II.
b. Where projectiles are cLamon to both Soviet and Czechoslovakian
weapons the Soviet fuze is usually employed.
-243
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Fuze, point detonating, NZ 10 AV
DISCUSSION
The NZ 10 AV is a setback armed point detonating fuze with optional
instantaneous or delay functioning. The one piece steel body has a
brass protective cap and a brass delay selector which may be set on
either "Z" or "0". An out-of-line detonator provides boresafety.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
5teel
1.16 lb
NZ 10 AV
Steel
0.81 in
PETN
181.77 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
Setback
Impact
Out-of-line
detonator
5 ft
3-245
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Fuze, point detonating, NZ 10 AV
156 WA.
1.41 HA.
10
Neg. 511871
FUNCTIONING DESCRIPTION
Prior to firing, the brass protective cap, the inner cap, and rubber
seal are removed. Upon firing, setback forces the arming pin (4) rear-
ward compressing the arming pin spring and allowing the locking ball (3)
to be forced out of its recess. The compressed creep spring (2) forces
the firing pin forward, releasing the slider (6), which is forced into
line by the slider spring. The sleeve stop pin moves inward, permitting
the firing pin sleeve to move downward. The sleeve stop now acts as a
safety, preventing contact between the firing pin and primer. Simulta-
neously, setback forces the rotor housing sleeve (10) rearward compress-
ing the sleeve spring until the setback release ball is released. When
the ball is released, the sleeve spring (13) forces the rotor housing
forward, simultaneously turning the rotor and aligning the rotor relay
with the delay element and the large channel. The fuze is now armed.
Upon impact, the firing pin impinges on the primer; the flash from the
primer ignites the relay charge (11), which in turn ignites the booster
lead (14) and booster (15).
3-246
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Fuze, point detonating, NZ 10 AV
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
100-Field Gun M1953
SP Assault Gun M1944
REFERENCE
100-mm HE SOF
(No disassembled view available)
OTIA Evaluation Report, OTIA 1054 dtd 15 July 1958
3-247
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instan-
taneous
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FSTC-CW-07-100-73
Fuze, point initiating, base detonating, Z-21
1 C
2,17
FUNCTIONING DESCRIPTION
1.17 DIA
1 Oa DIA
28 TPI
Neg 511873
Prior to firing, the safety pin seal is broken and the safety pin (4) is
removed. Upon firing, setback causes the setback sleeve (5) to move to
the rear over the safety spring support (6). The four arms on the set-
back sleeve retainer (7) engage in the annular groove on the inside of
the setback sleeve and retain it in the rear position. Setback also
moves the firing pin assembly (1) to the rear as far as the safety
spring (2), which is held in place by the safety spring support. As
setback eases and forward creep takes place, the firing pin assembly
moves forward, releasing the flat coiled safety spring (2), which moves
to the outside wall. The firing pin assembly is now held away from the
detonator (8) by the firing pin spring (3) and the fuze is armed. On
impact the firing pin assembly is driven to the rear into the detonator
which initiates the booster (9).
3-250
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Fuze, point initiating, base detonating, Z-21
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
Cartridge, HEAT, Model T-21
"TARASNICE"
(No disassembled view available)
REFERENCE
Picatinny Arsenal Memorandum Report No. 141, dated April 1957
3-251
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DISCUSSION
The NZ 30 AV is a setback armed, point detonating fuze with optional
instantaneous or delay action. The steel fuze body has a dull gray
anodized finish, and a removable steel protective nose cap. An out-of-
line primer is contained in the upper fuze body, but the rotor safety
feature found in the lower portion of the NZ 10 AV is absent on the
NZ 30 AV.
FSTC-CW-07-100-73
Fuze, point detonating, NZ 30 AV
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length -- - - - -
Explosive -- - - -
Explosive weight -- - - -
Steel
0.97 lb
MZ 30 V
Steel
1.10 in
PETN
241 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance
Arming time
Delay time
Setback
Impact
Out-of-line
detonator
3-253
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Fuze, point detonating, NZ 30 AV
1.00 DIA
1.07 DIA 13
14
15
1.40 DIA
10 TPI
1.26 DIA
FUNCTIONING DESCRIPTION
Upon firing, setback forces the arming pin (8) to the rear compressing
the arming pin spring (9) and allowing the locking ball (7) to drop out
of its position. The firing pin (5) is now withdrawn from the slider
(14) and forced forward by the creep spring (6), allowing the slider
to be forced into alignment by the slider spring (21). The sleeve stop
pin (13) can now move inward, permitting the firing pin sleeve (4) to
move downward. The sleeve stop pin prevents premature contact between
the firing pin and primer. The fuze is now armed.
Upon impact, the firing pin is driven to the rear, severing the sleeve
stop pin (13) and initiating the primer (20). With the selector setting
on "0" the flash is channeled through the large flash channel to the
detonator which initiates the booster. If delay action "3" is selected,
the flash from the primer is channeled through the smaller channel to
the delay element, which in turn initiates the detonator and booster.
3-254
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Fuze, point detonating, NZ 30 AV
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj ectiles
120-mm Mortar
REFERENCE
120-mm HE OFA
(No disassembled view available)
FSTC Exploitation Report, FSTC-CR-20-8-70
3-255
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Fuze, point detonating, NZ 60V
DISCUSSION
The NZ 60V is an air armed, point detonating fuze used on 130-mm rocket
projectiles. The fuze body is machined from steel and employs a brass
nose cap to provide protection during transportation and handling. A
steel ball locks the firing pin and primer carrier in an unarmed position
prior to firing.
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Steel
0.53 lb
NZ 60V
Steel
PETN
0.53 oz
Functional Data:
Arming method Pneumatic
Firing method Impact
Safety devices None
Arming distance 60-65 m
Arming time
Delay time
3-257
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Fuze, point detonating, NZ 60V
1.49 DIA
1.40 DIA
10 TPI
1.09 DIA
28 IPI
Neg. 5111377
FUNCTIONING DESCRIPTION
Prior to firing the nose cap (1) is removed. Upon firing, no movement of
components takes place until a velocity of approximately 250 meters per
second is reached; at this speed an overpressure of 0.5 to 1 atmosphere
is reached on the nose of the fuze. Air pressure now enters the fuze
through three inlets (4) forcing the firing pin (3), primer housing (6),
and locking ball (13) to move forward, expelling the air trapped above
the firing pin through three outlet holes (2). When the firing pin
reaches the top of the inertia weight housing, the locking ball (13) is
forced away from the firing pin by centrifugal force, locking the primer
holder and inertia weight together. The fuze is now armed.
On impact, the firing pin is driven to the rear, and the inertia weight
forward to make the firing pin impinge on the primer (8). The flash
from the primer, in turn initiates the detonator (9) and booster (10).
If the firing pin is not driven to the rear on impact, the inertia
weight will carry the primer forward, causing the fuze to function.
3-258
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Fuze, point detonating, NZ 60V
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
130-mm Rocket Launcher, RM-130
REFERENCE
130-mm RP-2 Rocket
(No disassembled view available)
OTIA Evaluation Report, OTIA-4521 dated Nov 1959
3-259
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Fuze, point detonating, NZ 62
(No photograph available)
DISCUSSION
The NZ 62 is an air armed, point detonating fuze with optional instanta-
neous or delay action. With the exception of the delay element and delay
selector the function and external appearance of this fuze is identical
to the NZ 60V.
This fuze has not been recovered to date. Therefore, no specific data
are available. The descriptive information was derived from a foreign
publication concerning artillery rockets and fuzes.
CHARACTERISTICS
Fuze Assembly:
Body material - ?
Weight --- - - ?
Markings
Booster
Body material
Body length -- - - - ?
Explosive ?
Explosive weight ?
Functional Data:
Arming method - - - - - - ?
Firing method -- - - - - ?
Safety devices -- - - - - - ?
Arming distance -------- ?
Arming time --------- ?
Delay time
3-261
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Fuze, point detonating, NZ 62
(No line drawing available)
FUNCTIONING DESCRIPTION
None,
(No disassembled view available)
3-262
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Fuze, point detonating, NZ 62
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
REFERENCE
None
3-263
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Chapter 4
Mechanical and Powder Train Time Fuzes and
Miscellaneous Projected Fuzes
4-1
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Section I.
MECHANICAL AND POWDER TRAIN TIME FUZES OF THE USSR
1. Introduction
a. The Soviets possess and distribute to' the Eurasian Communist
Countries (ECC) a complete range of time fuzes including combination
time and impact fuzes. These fuzes are both the mechanical time and
powder train time types.
b. Tactically the-greater number of this fuze class is employed
in an antiaircraft role. Currently, both powder train fuzes and
mechanical time fuzes have been seen only in medium caliber projectiles,
such as the 85-mm and 100-mm.
c. Powder train time fuzes employing pressed black powder in time
rings are severely affected by altitude and humidity; therefore, burning
rates may vary to such an extent that renders the fuze ineffective for
antiaircraft purposes. For this reason most countries now employ
mechanical time fuzes in the antiaircraft role even though mechanical
time fuzes are more expensive and more difficult to manufacture. The
Soviets took cognizance of the advantages and disadvantages of powder
train time fuzes and initiated a redevelopment program to improve this
principle. Since the pressed black powder delay train is unreliable,
this material is being replaced by a nongaseous, dicromate burning
mixture that is relatively nonhydroscopic; this has led to the retention
of powder train time fuzes within the Soviet fuze family.
d. It is known that the Soviets have developed mechanical time
and powder train time fuzes that are not covered in this document.
e. It is also known that the Soviets and other members of the ECC
possess variable time (VT) fuzes. There is evidence that this type of
fuze may have been employed in Vietnam, but it has not been verified.
f. Currently, no time fuzes or combination fuzes of ChiCom manu-
facture have been recovered. It is certain that such fuzes exist, if
only for antiaircraft purposes, but all ChiCom 85-mm and 100-mm anti-
aircraft projectiles recovered to date have been equipped with Soviet
fuzes.
4-3
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FSTC-CW-0 100-73
Fuse, powder train time, 5-1
varies From 35 to PS
star models.
.1 net ermk The impact
are
or
whi-
ChARACTFRISTICS
d by turning
fuseS from no
k RD fuze. The
time nng
ale is Len
Fuze Assembly:
Functional Data:
Arming method
rkings ---------
Body leng
Explosive
Explosive
Steel
- 0.72 in
4-5
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Fuze, powder train time, 0-1
4.16
1.57 DIA
1.42 DIA
10 TPI
11
12
13
14
Veg. 511879
FUNCTIONING DESCRIPTION
Upon firing, the setback striker (2) moves to the rear and initiates the
time train pellet. Simultaneously, the setback sleeve (13) moves to the
rear and releases the locking ball (12) allowing the compressed spring
to force the lock pin (14) forward and release the rotor (9). As the
flame burns around the middle time ring it ignites a pyrotechnic detent
pellet (5) which burns and releases the safety detent (3). Centrifugal
force can now align the rotor (9) and free the firing pin (1).
If the projectile impacts prior to
firing pin initiates the detonator
and booster (10).
For a time burst the flame travels
flashes through the flash channel
expiration of the time setting, the
(8), which in turn initiates the relay
through the lower time ring and
(7) to the relay and booster.
4-6
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WEAPONS AND PROJECTILES USED WITH
Weapons
Orr
107-mm Co /s M1910/30 &
M160)
FSTC-CW-07-100-73
Fuze, powder train time, D-1
E. OF-420
122-mm Corps Guns M1931 & 122-mm Frag H.E. OF-462, OF-471,
M1931/37 (A-19) Tank Gun M1943 OF-471N
(D-25) S.P. Gun M1944 (A-19S)
152-mm Gun 111910/34, Gun Howitzer 152-mm Frag H.E. OF-530, OF-540
111937 (ML-20)
REFERENCE
None
(No disassembled view available)
4-7
(Reverse Blank)
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DISCUS
FSTC-CW-0ID100-73
by sethack. The
iLal is brass, The
hole. The hooded
d 900 apart, This
projectiles and
a booster.
CHARACTERISTICS
embly:
as S
Stool
Wei
lags
hmttional Data:
Arming me.thod Setback
method ---- Time
,a y devices ------- None
ng distance
tidy material
edy length ------ NA
Explosive-------- Black
powder
Explosive weight ----
4-9
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Fuze, powder train time, 0M-82
2.62"
3.75"
S m ISLOfl3C=tO
0 82
9 2-M
_
DIA
137" DIA
5 TPI
Neg. sums
FUNCTIONING DESCRIPTION
When the round is fired, setback causes the firing pin (1) to overcome
the resistance of the spring (2) and move rearward until it strikes and
ignites the primer (4). The flash from the primer moves along a flash
channel until it ignites the powder train in the upper time ring (3).
The burning powder train follows a path within the upper time ring
through a passage to the center time ring (5), within the center time
ring through a passage to the lower time ring (6), within the lower time
ring to a flash channel (8), and then ignites the powder magazine (7),
which in turn functions the bursting charge of the projectile.
(No disassembled view available)
4-10
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Fuze, powder train time, 0M-82
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
82-mm Mortar, M1937 (82-BM37)
M1941 (82-BM41) and M1943
(82-BM43)
REFERENCE
None
82-mm Leaflet A-832
4-11
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..me
crc
intpan t
None
4? 3
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Fuze, powder train time, 22G, 221', and 22PG
2.30"/
3.16"
cm
0
Swim
CMS
1.35" DIA
6 TPI
Neg. 511883
FUNCTIONING DESCRIPTION
On firing, when the fuze is set for time action, the setback firing pin
(1) overcomes the resistance of the primer carrier spring (2) and ignites
the primer (10) which ignites the upper time ring (3) and lower time ring
(4). When the lower time ring burns through, the flame passes through
the flash channel and actuates the detonator assembly (9). When set for
a canister projectile, the time rings (3 and 4) are lined up and the
flash from the primer (1), after burning through the aligned time rings,
passes directly into the flash channel (11) and initiates the detonator
(9). When impact action is desired, setback causes the arming sleeve
(7) to move rearward over the safety ring (8), compressing the arming
spring (6) and holding the split safety ring (8) closed; this prevents
the safety ring from releasing the detonator while the round is in the
bore of the weapon. After the projectile leaves the bore, the arming
spring (6) moves the arming sleeve (7) forward, allowing centrifugal
force to expand the split safety ring and free the detonator. On impact,
the detonator (9) strikes the firing pin (5) and actuates the explosive
train.
4-14
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Fuze, powder train time, 22G, 22P, and 22PG
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm Howitzer M1909 & M1938
76-mm Gun, M1902/30, M1936 (F-22)
M1939 (USV), & M1942 (ZIS-3)
76-mm Gun, M1900, M1902 & M1902/30
Tank Guns, M1938/39 (L-11),
M1939 (F-32) M1940 (F-34) &
M1941 (ZIS-5), Howitzer M1909
& M1938 guns M1936 (F-22) M1939
(USV) & M1942 (ZIS-3)
REFERENCE
None
76-mm Shrapnel Sh-354, Sh-354P
76-mm Shrapnel Sh-354, Sh-354G,
Sh-354U Incendiary Z-354
76-mm Shrapnel, Sh-354, Sh-354G,
Sh-354U, Sh-352P Incendiary Z-354
(No disassembled view available)
4-15
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Fuze, powder train time, T-1
DISCUSSION?
The T-1 is a powder train time fuze used on illuminating mortar pro-
jectiles. In Appearance and functioning it is similar to the Soviet
D-I faze. The fuze has an impact option in addition to the time
graduations of 10-125.
The fuze body is? constructed of unpainted aluminum, with an anodized
nose and a copper protective cap.
CHARACTERISTICS
Fuze Assembly:
Body material ---------
Markings
Aluminum
0.52 lb
T 1
Functional Data:
Arming method -------- Setback
Firing method -------- PTT ?or
impact
Booster
Body material --------- Brass
Body length ----------- ?
Explosive ------------- Black
powder
Explosive weight ------ 31 gr
Safety devices ------- None
Arming distance ------ ?
Arming time
Self-destruct time --- NA
Delay time ----------- None
4-17
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Fuze, powder train time, T-1
(No photograph available) (No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, the setback firing pin overcomes the resistance of its
spring and initiates the primer pellet. The flame from the primer pellet
ignites the powder train in the upper time ring, which burns through, and
ignites the powder train in the middle and lower ring. As the flame burns
around the middle time ring it ignites a pyrotechnic detent pellet which
burns and releases the detent restraining the firing pin. Centrifugal
force completes the arming function by forcing the detent to the side
clearing the firing pin.
Upon expiration of the time setting, the flame from the lower ring passes
through a flash channel to the primer and booster and thence to the
projectile filler.
If an impact occurs prior to expiration of the time setting, or if the
fuze has been set for impact action (setting "YE") the firing pin is
driven into the primer to initiate the booster and filler.
4-18
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Fuze, powder train time, T-1
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
120-mm Mortar
82-mm Mortar
REFERENCE
None
120-mm 111
82-mm 111 VS-832S
(No disassembled view available)
4-19
(Reverse Blank)
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FSTC-CW-07-100-73
Fuzes, powder train time, T-3, T3(UG) and 32-second
Neg. 511885
DISCUSSION
The T-3, T3(UG) and 32-second are powder train time fuzes armed by
setback and fired at the selected time by a pyrotechnic powder train.
The fuzes are nearly identical in function and construction. The
following optional settings are available on the time ring: (1) "YA"
deletes the time option and the fuze will not function, (2) "K" is a
short delay for canister projectiles, (3) Other time delays up to 32
seconds are set by the time rings. A safety cap or cover is provided
which protects the fuze prior to firing.
CHARACTERISTICS
iFuze Assembly:
IFunctional Data:
Body material
Steel :
Arming method
Setback
Weight
1.43 lbs
Firing method
PTT
Markings
:
T-3
Safety devices
None
Booster
Arming distance
30 to 60 fd
Body material
Aluminum
Arming time
?
Body length
NA
Self-destruct time ---
None
Explosive
Delay time
0-32 second
Explosive weight
4-21
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FSTC-CW-07-100-73
Fuzes, powder train time, T-3, T3(UG) and 32-second
FUNCTIONING DESCRIPTION
With the fuze set for time functioning, upon firing, setback causes the
firing pin (1) to overcome the resistance of the spring (2), and move
rearward until it strikes and ignites the primer (4). The flash from
the primer is transmitted to the upper time ring (3), where it ignites
the powder train. The burning powder train follows a path within the
upper time ring and through a passage to the center time ring (5),
within the center time ring and through a passage to the lower time
ring (6), and within the lower time ring to the channel (7). The burn-
ing powder train then flashes through the channel to ignite the black
powder magazine (8) which functions the projectile. When the fuze is
set on "K", for canister effect, the passages of the time rings are
directly aligned with the channel (7); consequently, after the burning
powder train consumes the path within the upper time ring (3), it goes
directly to the channel, to the magazine, and functions the projectile.
When the fuze is set on "YA" it will not function. The powder train in
the upper time ring is consumed, but the time rings have been set so
that the passages are blocked and the powder train is prevented from
burning beyond the upper time ring. The "YA" setting results in the
projectile having a solid shot effect against the target. This setting
is used only for antitank fire, when no armor-piercing projectiles are
available.
4-22
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FSTC-CW-07-100-73
Fuzes, powder train time, T-3, T3(UG) and 32-second
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm AA guns M1931, M1931/33
and M1938; Div guns 141902/30,
M1936 (F-22), M1939 (USV) and
141942 (ZIS-3), Tank guns
141938/39 (L41), M1939 (F-32)
141940 (F-34), and 141941 (ZI95),
reg. guns 141900, 141902, and
141927
85-mm Tank gun 141944 (ZIS-S-53)
REFERENCE
None
76-mm Shrapnel Sh-361
85-mm Frag- 0-365
(No disassembled view available)
4-23
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, powder train time, T-5
V
DISCUSSION
The T-5 fuze is the fifth model of "T"-series Soviet fuzes. The T-5
fuze was designed for fragmentation shells used in medium caliber anti-
aircraft guns. It is a boresafe powder train fuze having the Soviet
safety classification of "Safe." The time scale ring is graduated from
5 to 165 and has a maximum burning time of approximately 32 seconds.
The fuze is shipped with a setting of "10." According to Soviet regula-
tions the lowest permissible setting is "8"; lower settings are used
only for self-defense of a gun battery against attacking aircraft.
Original models included a capability for a canister burst 10 to 32 feet
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
'Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
1.56 lb
T-5
Steel
0.6 in
Tetryl
2.6 oz
IFunctional Data:
, Arming method
Firing method
Safety devices
Arming distance
Arming time
Self-destruct time ---
Delay time
Setback
Powder trai
time
Out-of-line
detonator
10 to 32 ft
min
NA
NA
4-25
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Fuze, powder train time, T-5
from the muzzle, a solid shot effect, and the time settings. Models of
recent manufacture are limited to the time setting.
Externally the T-5 fuze compares with the T-6 fuze except for identifi-
cation stampings, diameter of the threaded base and the color bands. The
diameter of the threaded base of the T-5 fuze is much larger than that
of the T-6 fuze. The upper portion of the windshield is painted black
and one black band is painted around the circumference of the safety cap.
Internally the T-5 fuze compares with the T3(UG) fuze. The functioning
is also essentially the same, except for the addition of a detonator
slider.
618
5.04
FUNCTIONING DESCRIPTION
Upon firing, regardless of the setting of the time scale rings, the
slider setback locking pin (6) overcomes the tension of its spring and
sets back into the slider (8) to hold it immovable. As the projectile
rotates through the bore, centrifugal force causes the two slider lock-
ing pins (10) and (11) to compress their springs and move outward. After
the projectile has left the bore and the setback force ceases, the
slider setback locking pin spring returns to its original position away
from the slider. Centrifugal force then acts upon the counterweight in
the slider to move the slider into alignment with the flash channel and
4-26
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FSTC-CW-07-100-73
Fuze, powder train time, T-5
the primer detonator and booster (9). Simultaneously with setback, the
firing pin (1) overcomes the resistance of its spring and moves rearward
until it strikes and ignites the primer (3). The flash from the primer
is transmitted to the upper time ring (2) where it ignites the powder
train. The powder train burns successively through the center time
ring (4) and the lower time ring (5), which passes the flame through the
flash channel to ignite the primer detonator (7), in the slider the
primer detonator functions the booster (9), and the booster in turn
explodes the projectile.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm AA guns, M1931, M1931/33 &
M1938
85-mm AA gun, M1939, Tank guns
M1943 (D-5T85) and M1944
(ZIS-S53), SP guns M1943
(1J5-585 and D5-585A)
REFERENCE
None
76-mm Frag 0-361, 0361D
85-mm Frag 0-365
(No disassembled view available)
4-27
(Reverse Blank)
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FSTC-CW-07-100-73
Fuze, powder train time, T-6
DISCUSSION
The T-6 fuze was designed for shrapnel, incendiary, propaganda, and
illuminating shells of medium-caliber weapons. This is a boresafe
powder train fuze, having a Soviet safety classification of "safe." It
is considered a double-action fuze since it has both time and impact
functioning. The fuze is shipped with a hermetically sealed safety cap
which must be removed in order to set the time rings. The T-6 fuze is
quite similar to other "T"-series fuzes, but is distinguished by having
one red color band on the fuze windshield and two red color bands on the
safety cap. The major diameter of the base threads of the T-6 and T-7
is approximately the same.
CHARACTERISTICS
IFuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
1.19 lb
T-6
Brass
0.02 in
Black
powder
30 gr
Functional Data:
Arming method Setback
Firing method PTT or
impact
Safety devices None
Arming distance
Arming time
Self-destruct time NA
Delay time NA
4-29
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Fuze, powder train time, T-6
1.3713.
6 TPI
Neg. 511890
II
nsa
it) %
Kars- "Viri
at LA\ N.x.
Otiltbs *A-
\ vvio
1St'
1144111.*
511?2
4
FUNCTIONING DESCRIPTION
When the round is fired, the primer housing (12) in the base of the fuze
body (5) is set back over the stirrup (7) and the prongs of the stirrup
become engaged in a groove inside the primer housing in the rearmost
position, thus arming the fuze for impact functioning. Simultaneously,
the firing pin (9) overcomes the resistance of its spring and moves
rearward until it strikes and ignites the primer (2). The flash from
the primer is transmitted to the upper time ring (1) where it ignites
the powder train. If the fuze is set for time functioning the powder
train continues to burn successively through the center time ring (3)
and the lower time ring (4). The flame then passes through the flash
channel (11) to ignite the black powder base charge (8) which sets off
the bursting charge in the shell. If the fuze is set for canister effect
(the minimum burning time setting), the action is essentially the same
except that the powder train burns in a straight passage through the time
rings to the flash channel, and then to the base charge. If the fuze is
set for impact functioning, or if the fuze fails to function on the time
or canister settings, upon impact the primer holder (13), the stirrup (7),
and the primer housing (12) are thrown forward to overcome the tension of
the anticreep spring and cause the impact primer (6) to impinge against the
fixed firing pin (10). This action causes a projection on the base of the
4-30
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Fuze, powder train time, T-6
primer holder to be moved out of the central hole in the primer housing
retainer (14), thereby opening this orifice to allow the flame from the
primer to pass to the base charge and then to the projectile.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm Howitzer, M1927 & M1943,
Mountain guns M1909 & M1938,
Guns M1902/30, M1936 (F-22)
M1939 (USV), & M1942 (ZIS-3),
Tank guns M1927/32, M1938/39
(L-11) M1939 (F-32) M1940
(F-34) & M1941 (ZIS-5) SP gun
M1942/43 (SAU-76)
122-mm Howitzer, M1938
REFERENCE
None
76-mm Shrapnel Sh-354T
Sh-354U
Inc Z-350
Z-354
122-mm Illuminating 5-426
Propaganda A-462
Shrapnel Sh-462
(No disassembled view available)
4-31
(Reverse Blank)
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DISCUSSION
The T-7 is a combination powder train time and paiat?detanatting fuze
with settings for time and impact action. It is similar in design and
function to the T-6 with the exception of the time scale which is
graduated from 5 to 165. The T-7 may be identified by the violet
colored band on the shipping cap and windshield. It is used in the
same projectiles and fired from the same guns as the T-6.
FSTC-CW-07-100-73
Fuze, powder train time, T-7
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
1.19 lb
T-7
Brass
0.02 in
Black
powder
30 gr
Functional Data:
Arming method
Firing method
Safety devices
Arming distance Arming time
Self-destruct time
Delay time
Setback
PTT or impact
None
NA
NA
4-33
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Fuze, powder train time, T-7
6.35
.18
.40
.80
2.37
1.50
1.10
.40 DIA
.85 DIA
- 1.80 DIA
FUNCTIONING DESCRIPTION
Same as the T-6.
2.45 DIA
2.55 DIA
2.52 DIA
1.36 DIA
6 TPI
Neg. 511892
4-34
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Fuze, powder train time, T-7
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
76-mm Howitzer, M1927 & M1943,
Mountain guns 141909 & M1938,
Guns M1902/30, M1936 (F-22)
141939 (USV), & 141942 (ZIS-3),
Tank guns M1927/32, 141938/39
(L-11) 141939 (F-32) 141940
(F-34) & M1941 (ZIS-5) SP gun
141942/43 (SAU-76)
122-mm Howitzer, M1938
76-mm Shrapnel Sh-354T
Sh-354U
Inc Z-350
Z-354
122-mm Illuminating S-426
Propaganda A-462
Shrapnel Sh-462
REFERENCE
DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U), (SECRET-NFD).
4-35
(Reverse Blank)
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DISCUSSION
FSIC-CW-07-100-73
Fuze, mechanical time, VM-2
The VM-2 is a clockwork mechanical time fuze which is armed by setback
and centrifugal force. It was designed for use in 85-mm antiaircraft
projectiles with a maximum flight time of 30 seconds. No provisions
CHARACTERISTICS
Fuze Assembly:
Body material
Weight
Markings
Booster
Body material
Body length
Explosive
Explosive weight
Aluminum
1.66 lb
BM-2
Aluminum
1.6 in
Tetryl
Functional Data:
Arming method
Firing method
Safety devices
Setback &
centrifugal
force
Mechanical
time
Mechanical
lock on fir-
ing pin and
interrupter
between fir-
ing pin and
primer
Arming distance
Arming time 0.8 sec
Self-destruct time 0.8 to 30 sec
Delay time NA
4-37
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Fuze, mechanical time, VM-2
have been made for impact firing. The fuze body and windshield are made
of aluminum; the locking ring and internal components are made of brass.
FUNCTIONING DESCRIPTION
On firing, setback causes the trigger (8) to move rearward and release
the hand (7). The hand, upon being released, is rotated in a counter-
clockwise direction by the main spring and clockwork mechanism. The
complete clockwork mechanism has not been shown in the drawing. When
the hand has cleared the safety bridge (1), it is pressed up against the
hand race on the upper surface of the top of the retainer cup (9) by a
spring (2) under the center of the hand. When the hand reaches the
portion of the hand race which is cut out to receive it, it is forced
upward by its spring, and the ringlike section of the hand clears the
prong of the safety lever (3), allowing it to move outward under the
pressure of its spring and centrifugal force. This pulls the lower
section of the safety lever out of the safety slot of the firing pin (4),
allowing the firing pin to go rearward under the influence of its spring
and to activate the detonator (6), which in turn detonates the booster
(10). The fuze has an additional safety feature in its spring-loaded
shutter (5) which remains in place, blocking the primer from the firing
pin until centrifugal force pulls it to the side and leaves a clear
passage to the primer.
4-38
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Fuze, mechanical time, VM-2
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
85-mm Antiaircraft gun M1939
REFERENCE
None
85-mm FRAG 0-365M
(No disassembled view available)
4-39
(Reverse Blank)
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FSTC-CW-07-100-73
Fuzee, mechanical time, TM-I?bli?and VM-60
DISCUSSION
The TM-161, and VM-60 are ?mechanical time fuzes used in large caliber
projectiles. Both fuzes are similar in design and functioning; however,
the VM-60 was designed for use with high explosive projectiles and
therefore includes an out-of-line detonator and a retryl booster. The
TM-161, was designed For use with an illuminating projectile and uses a
black powder booster and an in-line detonator.
Roth fuzes employ a spring wound clockwork, adjustable from 2
seconds in increments of ?0.2 seconds.
CHARACTERISTICS
to 58
Fuze Assembly:
Body material ------Aluminum
'unctional Data:
Arming method --------
Centrifugal
Weight -------------
1.69 lb
Force
Markings -----------
Booster
BM-60 TM-16}1
Firing method --------
Mechanical
time
Body material ------
Steel
Safety devices -------
Out-of-line
Body length --------
0.591 in
detonator
Explosive ----------
VM-60 Tetryl
Arming distance ------
?
TM-l6 Black
Arming time ----------
2-58 seconds
powder
Self-destruct time ---
NA
Explosive weight ---
?
Delay time -----------
NA
4-41
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FSTC-CW-07-100-73
Fuze, mechanical time, TM-16L and VM-60
6.299
5.118
Nes 511897
FUNCTIONING DESCRIPTION
2 028 DIA
10 TPI
Upon firing, setback moves a spring loaded detent in the base of the
fuze, to the rear unlocking the detonator slider. Simultaneously,
centrifugal force removes two additional detents from the slider allow-
ing it to rotate and align. When acceleration ceases, the detent locks
the detonator slider in place.
Centrifugal force also removes a block from the clockwork locking arm
and the clockwork timing arm. This allows the timing arm to be rotated
by the spring wound clockwork mechanism. The fuze is now armed and
functioning. When the timing arm rotates to the corresponding slot in
the timing disk it is spring ejected. This action releases the locking
cam arm, allowing a spring in the detonator slider to overcome a detent
and impinge the detonator on the transverse firing pin. In the TM-16L
fuze the flash is relayed to the fuze ignition charge. In the VM-60 the
flash is relayed to the booster.
4-42
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Fuze, mechanical time, IM-161, and VM-60
WEAPONS AND PROJECTILES USED WITH
Weapons
Fuze
Projectiles
130-mm Coastal gun, M58
130-mm Field gun M46
VM-60
TM -16L
130-mm HE OF-3S-42
130-mm Illum SP-46
REFERENCE
(S-NFD) DIA Report ST-CR-20-8-69, Field Examination of Selected Items of
Foreign Ammunition (U).
4-43
(Reverse Blank)
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DISCCSSIDN
FSTC-CW-07-100-73
TUZei mechanical time, VM-30 and Vii-Th
The VM-39 and V4-30L are mechanical time fuzes which are armed by ?set-
back and centrifugal force. No provisions are included for impact
functioning.
The clockwork design and functicn ?are similar to the German 2T.Z.S130
Rheinmatell fuze of World War II, except for the addition of an ?out-of-
line detonator.
CHARACTERISTICS
?Fuze Assembly;
Body material ---------- Aluminum
Weight 1.57 lb
Markings BM-30
Booster
Body material ---------- Aluminum
Body length ------------ 1.10 ia
Explosive -------------- Tetryl
Explosive weight ------- 3.1. gm
Functional Data:
Arming method -------- Setback &
centrifugal
force
Firing method ----- -- Mechanical
time
Safety devices------ Out-of-line
detonator
Armin- distance ------
Arming time ----------? 0 to 30 ?son
4-45
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Fuze, mechanical time, VM-30 and VM-30L
The aluminum body is separated at the base of the ogive by a brass lock
ring. The lower body is threaded for an anodized steel protective shipping
cap. Firing delay time is set by an automatic fuze setter or with a fuze
wrench which engages key slots in the body and ogive. There are no time
setting marks on the fuze body.
The VM-30 and VM-30L fuzes are nearly identical in appearance but vary
slightly in weight. Internal differences consist of the following: VM-30,
brass clockwork with an integral horizontal firing pin and primer slider;
VM-30L, aluminum clockwork with a vertical firing pin and a fixed primer
located in the base of the fuze body.
(No line drawing available)
FUNCTIONING DESCRIPTION
Upon firing, three setback detents mounted vertically on the clockwork
housing move rearward to lock the ogive to the fuze body and to unlock
the clockwork, allowing the timing hand to turn. Simultaneously, a
safety detent sets back, locking the detonator slider out of line.
Centrifugal force also causes two detonator slider detents to be with-
drawn. After setback ceases, the detonator slider spring withdraws the
safety detent, allowing the detonator slider to align. The fuze is now
armed.
4-46
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Fuze, mechanical time, VM-30 and VM -30L
When the timing hand reaches the slot in the hand race, it is spring
ejected and allows the trigger bar to pivot. This frees the primer
slider to impinge the primer on the fixed transverse firing pin and
initiate the explosive train.
Functioning of the VM-30L is identical, except that the trigger bar
releases a vertical spring loaded firing pin which impinges on a primer
located in the fuze body.
WEAPONS AND PROJECTILES USED WITH
Weapons
Projectiles
85-mm AA gun M1939
Field gun D-44
REFERENCE
85?mm HE -Frag
0-365M
(No disassembled view available)
FSTC Foreign Materiel Exploitation Memorandum Reports -
FSTC-CR-20-57-71 and FSTC-CR-20-58-71
4-47
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eSTC-C14-07-100-73
Section II.
MISCELLANEOUS PROJECTED FUZES
1. Introduction
a. This chapter includes those fuzes that do not, by definition,
fit securely in the other sections of this document. However, these
fuzes are no less important than those residing in conventional classi-
fication.
b. A case in point is the Long Delay Fuze, NNC-82. This fuze
holds a unique position in the world's explosive ordnance in that it is
the only known long delay fuze employed with projected munitions. Employ-
ment of the fuze has been limited, but the threat the fuze presents is
real.
c. The NNC is bore safe, well constructed and unique in that it
arms only upon impact. By American standards its only disadvantage is
its lack of detonator safety.
d. The NVA/VC air burst fuze is an interim attempt to fill a void
in their ordnance family. They currently lack a fuze for use in infantry
weapons that will produce air bursts for antipersonnel or antiaircraft
purposes. It is expected that additional fuzes of this classification
will appear.
e. Since the Vietnamese conflict may be classed as a clandestine
guerrilla war, it can be assumed that additional special purpose fuzes
will be developed that will reside in the miscellaneous classification.
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FST' CW-07 00-73
fuze tPTTS
in both 82: mm air b:urst fragmentation, and forward
d$.
The fuze ccnaists essentially or a set back weight, a pull igniter, a
length of tine: fuze a bleating cap and barstOr 'charge' fat the
tion round, Or a three ounce blaCk powder expelling Charge in the
propaganda round,
The length at the timO fuze Varies the firi,
CHARACTERIST:CS
e Assem
Weight
------
B oster
Body material --
Body length ---
Explosive
Explosive we
nctiona. iiata.:
Arming method --
Firing method --
Safety devices ---
Arming distance
Arming time
Delay time ----
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Fuze, base detonating, powder train time
3 657
630 DIA
17 TPI
FUNCTIONING DESCRIPTION
Upon firing, setback forces the lead weight (12) to the rear bending the
prongs of the retainer (13) outward. Rearward movement of the lead
weight initiates the pull friction igniter (9), which in turn ignites the
time fuze (7).
The time fuze burns for a predetermined time interval and ignites the
black powder expelling charge (3) which builds up gas pressure for nose
ejection of the leaflets. In the fragmentation round, the time fuze
initiates a blasting cap which in turn initiates a burster charge
expelling the fragments.
(No disassembled view available)
4-52
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Fuze, base detonating, powder train time
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj ectiles
Soviet or PRC 82-mm Mortars
REFERENCE
None
82-mm HE-Fragl
Propaganda f
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Nose ejection
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FSTC-CR-07-10P-75
Fuze, impact, chemical long delay, NITC-82
Le. now
DISCUSSION
The 82-mn chemical long delay fuze model NOIC-85 is the only known long
delay fuze employed with projected munitions. The fuze provides four
standard long delay periods by selecting different concentrations of
acetone. A yellow ampoule produces a delay of 2.5 hours; red produces
a delay of 3.5 hours; blue produces 5 hours: and violet ?8 hours. All
times are m20% at 86?F (502C). Lower temperatures will produce longer
delays. The fuze ampoule may be crushed at any time prior to firing to
reduce the standard delay. Until impact the fuze remains unarmed and
safe.
CHARACTERISTICS
Fuze Assembly:
Functional Data:
Body material -----
- Aluminum
Arming method --------
Impact
Weight ------------
- 232.5 grams
Firing method --------
Chemical
Markings ---
- NNC-82
delay
Booster
Safety devices -------
Locking halls
Body material ----
-- Aluminum Arming distance ------
NA
Body length ---
0.8 in Arming time ----------
NA
Explosive ---------
- Tetryl
Self-destruct time ---
NA
Explosive
12,5
Delay time -----------
2.5 to 8 Oro
at 86?F
weight
- -- gr
4-55
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Fuze, impact, chemical long delay, NNC-82
The fuze can be distinguished by its rugged construction and the two
wrench flats on the nose cap. The original version found was uncoated
aluminum. Later factory-produced versions are anodized a light yellow.
Neg. 511903
1.57 DIA
1.42 DIA
10 TPI
PRIOR 70
1.25 DIA FIRING
1.03 DIA
IN FLIGHT
FUNCTIONING DESCRIPTION
Prior to firing, an ampoule (4) is installed in the fuze and crushed by
tightening the nose plug (1). This releases acetone on the delay element
(8) that retains the striker (10) in the cocked position. The striker
is further held in the safe position prior to impact by the two locking
balls (14) seated under the striker housing flange. Upon firing, setback
locks all movable parts firmly together. Upon impact, the impact arming
collar (15) moves forward, compressing the impact spring (16), and
simultaneously the locking balls (14) fly out of their recesses due to
inertia. The balls move into the circumferential grooves in the firing
mechanism housing and are held in this groove when the impact arming
collar (15) is forced rearward by the spring (16). The striker (10) is
now unlocked and the fuze is armed. As the acetone softens the plastic
delay element (8) the striker spring (13) pulls the head of the striker
through the softened plastic and propells the sharp pointed striker into
the stab sensitive detonator (17), initiating the explosive train.
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Fuze, impact, chemical long delay, NNC-82.
WEAPONS AND PROJECTILES USED WITH
Weapons
Proj ectiles
82-mm Mortar, M1937, M1942, M1943
REFERENCE
None
82-mm HE Frag 0-832; 0-832D
(No disassembled view available)
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INDEX
Nomenclature
FSTC-CW-07-100-73
Country of
Origin
Page
Fuzes for Aircraft and Light Antiaircraft Guns
Fuze, point detonating, A-20 USSR 1-5
Fuze, point detonating, A-23 USSR 1-9
Fuze, point detonating, A-37 and A-37U USSR 1-13
Fuze, point detonating, B-30 USSR 1-17
Fuze, point detonating, B-37 USSR 1-21
Fuze, point detonating, K-6 USSR 1-25
Fuze, point detonating, K-20 and K-20M USSR 1-29
Fuze, point detonating, MG-25 USSR 1-33
Fuze, point detonating, MG-37 and MG-8 USSR 1-37
Fuze, point detonating, MG-57 and MGZ-57 USSR 1-41
Fuze, point detonating, Type 37 PRC 1-47
Fuze, point detonating, A-37 Czechoslovakia 1-53
Base Detonating Fuzes
Fuze, base detonating, AV-96 USSR 2-5
Fuze, base detonating, DBR USSR 2-9
Fuze, base detonating, DBR-2 USSR 2-13
Fuze, base detonating, DBT USSR 2-17
Fuze, base detonating, DK-2 USSR 2-21
Fuze, base detonating, DK-4 USSR 2-25
Fuze, base detonating, DR-5 USSR 2-29
Fuze, base detonating, KTD and KTD-2 USSR 2-33
Fuze, base detonating, MD-1, MD-2, MD-3, and
MD-4 USSR 2-37
Fuze, base detonating, MD-5 and MD-6 USSR 2-41
Fuze, base detonating, MD-7 and MD-8 USSR 2-45
Fuze, base detonating, MD-10 USSR 2-49
A-1
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FSTC-CW-07-100-73
Nomenclature
Fuze, base
Fuze, base
Fuze, base
Fuze, base
Fuze, base
Fuze, base
Fuze, base
Fuze, base
grenade)
Fuze, base
grenade)
Fuze, base
Fuze, base
Ch 4)
Fuze, base
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Country of
Origin
Base Detonating Fuzes (Continued)
USSR
USSR
USSR
USSR
USSR
USSR
detonating, MR-Z
detonating, 5DM
detonating, 5DT-2
detonating, 7DT
detonating, 10DT
detonating, V-350
detonating, Type 2 (Artillery)
detonating, Type 2 (PG-2 HEAT
detonating, Type 2 (PG-2 HEAT
detonating (3-50 HEAT grenade)
detonating, PTT (See Section II,
detonating, DC-1
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
detonating,
Point Detonating Fuzes
AD -N
DKZ -V
GK -2
GK-2M
GVMZ and GVMZ -1
GVMZ -7
IPK -2
KT-1
KTM-1
KTM-1U
KTMZ -1
MG -N
MP and MP-82
and KTMZ -1U
and KTMZ -2
A-2
PAC
PRC
Page_
2-53
2-57
2-61
2-65
2-69
2-73
2-79
2-83
North Korea 2-89
North Vietnam 2-93
North Vietnam 4-51
Poland 2-97
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
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3-5
3-9
3-13
3-17
3-21
3-25
3-29
3-33
3-37
3-41
3-45
3-49
3-53
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Nomenclature
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
3GT
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
FSTC-CW-07-100-73
Country of
Origin
Point Detonating Fuzes (Continued)
detonating, M-1
detonating, M-2, 11-3, 11-4, and 11-5
detonating, 11-6
detonating, 11-12
detonating, 11-50
detonating, RG-6
detonating, RGM, RGM-2, and RGM-3
detonating, RGM-6
detonating, V-22
detonating, V-24
detonating, V-25
detonating, V-429
detonating, V-5M1
detonating, VGU-1
detonating, UGT, UGT-2, UGT-3, and
detonating,
initiating,
initiating,
initiating,
initiating,
initiating,
initiating,
initiating,
detonating,
detonating,
detonating,
detonating,
4GT
base detonating, BM
base detonating, GKV
base detonating, GPV-2
base detonating, V-229
base detonating, V-5K
base detonating, VP-7
base detonating, ZMGK
Type 1 (Artillery)
Type 1 (Rocket)
Type 3 (Special)
Type 5
A-3
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
USSR
PRC
PRC
PRC
PRC
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3-57
3-61
3-65
3-69
3-73
3-77
3-81
3-85
3-89
3-93
3-97
3-101
3-105
3-109
3-113
3-117
3-121
3-125
3-129
3-133
3-137
3-141
3-145
3-151
3-155
3-159
3-163
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Nomenclature
Country of
Origin
Point Detonating Fuzes (Continued)
Fuze, point detonating, Type 6
Fuze, point detonating, Type 7 (Artillery)
Fuze, point detonating, Type 7 (Mortar)
Fuze, point detonating, Type 8
Fuze, point detonating, Type 9
Fuze, point detonating, Type 12
Fuze, point detonating, Type 51
Fuze, point detonating, Type 53
Fuze, point detonating, Type 53 Model 1
Fuze, point detonating, Type 53 Model 2
Fuze, point detonating, Type 88
Fuze, point detonating, Type 100-3
Fuze, point detonating, Type 429
Fuze, point detonating, Type 3711
Fuze, point detonating, Universal
Fuze, point initiating, base detonating,
Type 1
Fuze, point initiating, base detonating,
Types TS-1 and TS-2
Fuze, point detonating, Type 137, Type A3,
and Rocket fuze (PIBD)
Fuze, point initiating, base detonating,
Type unknown (for 57-mm HEAT projectile)
Fuze, point
Fuze, point
Fuze, point
Fuze, point
Fuze, point
detonating, NZ 10 AV
initiating, base detonating, Z-21
detonating, NZ 30 AV
detonating, NZ 60V
detonating, NZ 62
A-4
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
PRC
Czechoslovakia
Czechoslovakia
Czechoslovakia
Czechoslovakia
Czechoslovakia
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Page
3-167
3-171
3-175
3-179
3-183
3-187
3-191
3-195
3-199
3-203
3-207
3-211
3-215
3-219
3-223
3-227
3-231
3-235
3-239
3-245
3-249
3-253
3-257
3-261
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Nomenclature
FSTC-CW-07-100-73
Country of
Origin
Page
Mechanical and Powder Train Time Fuzes, and
Miscellaneous Projected Fuzes
Fuze, powder train time, 0-1 USSR 4-5
Fuze, powder train time, 014-82 USSR 4-9
Fuze, powder train time, 22G, 22P, and 22PG USSR 4-13
Fuze, powder train time, T-1 USSR 4-17
Fuze, powder train time, T-3, T3(UG) and
32-second USSR 4-21
Fuze, powder train time, T-5 USSR 4-25
Fuze, powder train time, T-6 USSR 4-29
Fuze, powder train time, T-7 USSR 4-33
Fuze, mechanical time, VM-2 USSR 4-37
Fuze, mechanical time, TM-161 and VM-60 USSR 4-41
Fuze, mechanical time, VM-30 and VM-30L USSR 4-45
Fuze, base detonating, powder train time North Vietnam 4-51
Fuze, impact, chemical long delay NNC-82 North Vietnam 4-55
A-5
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UNCLASSIFIED
Secuntv Classification
DOCUMENT CONTROL DATA- R & D
(Security [Mat if Masson of tide, body of abstract and indexing annotation must be entered when the overall report le claaalded)
1 ORIGINA TING ACTIVITY (Corporate author)
Foreign Science and Technology Center
US Army Materiel Command
Department of the Army
20. REPORT SECURITY CLASSIFICATION
UNCLASSIFIED
26. GROUP
None
3 REPORT TITLE
Fuze Manual--Eurasian Communist Countries (U)
? OESCRIF TIVE NOTES (Type of report and Inclusive dates)
Planned Revision, Annual. Manual.
5 ?u T m0 RIM (First name, middle initial, last name)
Charles D. Campbell
5 REPORT DATE
15 June 1973
le. TOTAL NO OF PAGES
496
)6. NO OF REFS
Is CONTRACT OR GRANT NO
b. PROJECT NO
d.FSTC Task No. 22TD102AC
d.
0a. ORIGINATOR'S REPORT NUMBER15)
FSTC-CW-07-100-73
Sb. OTHER REPORT NOISI (Any other numbers that may be aselenad
NM report)
None
10 DISTRIBUTION STATEMENT
Distribution is limited to US Government agencies only, because document covers evalua-
tion of military hardware. Other requests for this document must be referred to US
Army Foreign Science i. Technology Center, 220 7th Street, NE., Charlottesville, VA 22901
II SUPPLEMENTARY NOTES
12 SPONSORING MILITARY ACTIVITY
Foreign Science and Technology Center
US Army Materiel Command
Department of the Army
If ABSTRACT
This publication outlines the technical characteristics, current status, brief
history, and detailed functioning of ECC munitions fuzes which have been recovered
to date. No attempt has been made to include each individual fuze, but rather to
include the most recent development in a fuze family. Air dropped, hand grenade,
mine, and improvised fuzes are not included. (U)
0
DDry..1473 OBSOLETE f?:?"2"4.5...7. ' "" WHICH '
B-1
UNCLASSIFIED
Security Classification
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UNCIASSTFIRD
Security Clasalfication
14.
RSV WORDS
LINK ?
LINK IS
LINK C
AoLe
WY
ROLE
WT
ROLE
WT
Artillery fuzes
Base detonating fuze
Point detonating fuze
Point initiating fuze
Mechanical time fuze
Powder train time fuze
Soviet fuzes
People's Republic of China fuzes
North Vietnam fuzes
Czechoslovakian fuzes
B-2
UNCLASSIFIED
Security Classification
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FSTC-CW-07-100-73
DIA/DS-4C DISTRIBUTION LIST (40 Copies)
DOD & JOINT AGENCIES
A125 OSD (DDR&E) (6)
DIA
3134
3136
3162
3169
3178
3581
3600
3615
3669
3737
3606
ARMY
CO25
C030
C072
C241
C459
C467
C500
C545
C547
C573
C587
C617
C619
C620
C629
C632
C637
C639
C641
C644
C646
C663
DIA/DE-2 (2)
DIA/DE-3 (2)
DIA/DT-1A2
DIA/DT-2D
DIA/DI-3E
DIA/DI-3A2
DIA/DI-4A (AHS)
DIA/DI-4D (PENT)
DIA/DI-6E
DIA/DS-4A (4)
DIA/DI-4B
DISTRIBUTION DIRECT
NAVY
D008
D244
D923
D947
D971
D972
OTHER
NISC
NAVORDSYSCOM (2)
NAVINTCOM-34I
NAVINTCOM-34
OP-009F
OP -009FIP
P055 CIA/CRS/ADD/SD (7)
P090 NSA (3)
S030 FRD LIB OF CONG
TO RECIPIENT (142 Copies)
ACS-FORCE DEV
CH R/D
CDC CONFOR GP
FIRST US ARMY
COMD-GEN STF COL
MSL-MUN CEN-SCH
CONARC (2)
CMBT DEVLP COMD
CDC NUCLEAR AGCY
ARTY BD
CDC EXPERMTN COMD
STRAT-TAC ANAL GP
MIA REDSTONE (2)
USASRD
CDC CBR AGCY
CHEM CTR & SCH
CDC ARMOR AGCY
CDC FLD ARTY AGCY
CDC AVN AGCY
CDC PRS&LOG SYS GRP
CDC COMB SYS GP
CDC MAINT AGCY
ARMY (Continued)
C749
C763
C766
C768
NAVY
OACSI-ADMIN-IDB
OACSI-S&T DIV
OACSI-INT SUP DET
OACSI-USAITAD
D151 NAVEODFAC IND HEAD
D246 NAVWEPSLAB DAHLGRN
D492 EOD SCH (2)
AIR FORCE
E046
E408
E436
E451
E018
AFIs/INFoA
AFWL
AFSCC (SUR)
AUL
AF/RDGC-SAmS0
U & S COMMANDS
F300 USARAL
C-1
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FSTC-CW-07-100-73
DISTRIBUTION DIRECT
TO RECIPIENT (Continued)
U & S COMMANDS (Continued)
H005 USCINCEUR
H300 USAICE (USAREUR) (2)
11530 HQ 1ST ARMORED DIV
J005
K005
K010
K015'
K016
K020
K100
K300
K340
CINCLANT
CINCPAC
COMUSKOREA
COMUSMACV (2)
COMUSMACTHAI
COMUSTDC
PACAF 548 RTG
USARPAC (3)
EIGHTH US ARMY
L040 SAC 544TH ARTW
M300 USARSO
ARMY MATERIEL COMMAND
AMCRD -I
AMSCA-ND (2)
AMXDO-FIO
AMSTA-RI-FIO
ARMY MATERIEL COMMAND (Continued)
AMSTS-RZY
SMUFA-S3000-FIO (2)
SMUPA-FIO (10)
AMSWE-RDI
SWEWV-RD-FIO
STEAP-IN-F
AMXBR-XA-FI (2)
STEJP-SI
STEED-SO
STEBB-AD-S
STEBA-TD-PA
STEBC-MA-A
STEWS-TE-PO
STEYP-SID
STEAP-TL
USA? STC
AMXST-PS1 (2)
AMXST-1S3 (25)
AMXST-TD (2)
AMXST-CB (2)
AMXST-SR (3)
AMXST-FS
AMXST-ST2
AMXST-ST3
AMXST-IS1 (2)
CGUSCONARC, ATTN: ATOPS-TNG-NBC/EOD, Fort Monroe, VA 23351
CGUSCONARC, ATTN: ATLOG-SS-AM, Fort Monroe, VA 23351
CGUSACDC, ATTN: CDCMS-U (EOD Staff Officer), Fort Belvoir, VA 22060
CGUSAREUR & 7th Army Troops, ATTN: AEAGD-MM, APO NY 09102
CINCUSARPAC, ATTN: GPLO-ND-0, APO San Francisco 96558
Cmdr, US Army Forces Southern Command, ATTN: SCAREOD-SO, APO NY 09827
CGUSARAL, ATTN: ARAGL-S (EOD Staff Officer), APO, Seattle 98749
CGUSARV, ATTN: AVHDL-A14-0, APO San Francisco 96491
CMDT, USACMIC&S, ATTN: CB EOD Div, Ft McClellan, Alabama 36201
CMDT, USAMMC&S, ATTN: ATSMM-DP, Redstone Arsenal, Alabama 35809
CO, USADCDMA-MMD-ATTN: EOD STAFF OFFICER, Redstone Arsenal, AL 35809
EOD Staff Officer, MACV (J42), APO San Francisco 96222
CO, EOD TNG Det No. 1, US Naval School, EOD, Indian Head, MD 20640
CMDR, DET 63, NAVEODFAC, Indian Head, MD 20640
Co D. 519 MI BN TIC, APG, MD (2 copies)
C-2
Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3
Declassified and Approved For Release 2014/03/04 : CIA-RDP09-01333R000100550001-3