SOVIET MANUAL ON THE MAINTENANCE OF BOMBING EQUIPMENT ON THE TU-16 AIRCRAFT

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A071000190001-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 66
• Document Creation Date: December 27, 2016
• Document Release Date: November 7, 2013
• Sequence Number: 1
• Publication Date: February 27, 1964
• Content Type: REPORT

50X1 -HUM
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INFORKATION R P0-"T-t, INFORMATION REP,ORT
CENTRAL INTELLIGENCE AGENCY
,Z0X1
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
S-E-C-R-E-T
NO FOREIGN DISSEM
50X1
COUNTRY USSR
SUBJECT
DATE OF
INFO.
PLACE &
DATE ACQ.
THIS is UNEVALUATED
Soviet Manual on the Maintenance of
Bombing Equipment on the TU-16 Aircraft
REPORT
DATE DISTR. 0,2. 7 February 1964
NO. PAGES 1
REFERENCES
50X1
INFORMATION.
SOURCE GRADINGS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE.
3
2
1
English-language manual on the Soviet TU- 1(50X1-HUM
(BADGER A) aircraft, entitled Aircraft TU-16: Maintenance Instructions,
Book III, Bombing Equipment
publishing data were given.
e manual has 116 pages plus two insets; nc
50X1-H UM
50X1 -HUM
Distribution of Attachment for Retention:
Army
Army/FSTC
Navy
Navy/STIC
Air
Air/FTD
SAC
NSA
OSI
ORB
2 copies
3 copies
4 copies
3 copies
)i- copies
6 copies (1 forwarded previously)
1 copy
2 copies
2 copies
2 copies
S-E-C-R-E-T
NO FOREIGN DISSEM
50X1 -HUM
50X1 -HUM
50X1 -HUM
GROUP I
Excluded from automatic
downgrading and
declassification
STATEI DIA I ARMY I NMN I AM I NSA
ARMY/FSTC NAVY/STIC AIR/FTD
(Note: Field distribution indicated by "#".)
Xt6 NIC I OCR
SAC
INFORMATION REPORT INFORMATION REPORT
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SECRET
NO FOREIGN DISSEM
AIRCRAFT TU-16
Maintenance Instructions
Book III
BOMBING EQUIPMENT
(English Language)
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AIRCRAFT Ty46 --
Maintenance Instructions
Book- III
BOMBING EQUIPMENT
?
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Secret
Copy No._-.-17: '
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The Book contains IS pages and 2 inserted sheets with driwinas.
+mama.,
50X1.
C ON TEN'T .8
Pagn
Symbols and Abbreviations -5
Chapter I
PRE-FLIGHT AND POST-?LIGHT INS:PDCTION 9
Preparation of Equipment, Bomb Hoisting and Pre-Flight
Inspection
Post-Flight Inspection and Maintenance
9
27
Chapter II .
BOMB RELEASE CONTROL .38
Releasing Bombs from Bomb Bay.
Navigator's Operstions in Case Bombing Equipment Units'
Fail during Bomb Release .40
38
Chaptr III
PFLOVING BOMBS PROM BC 17' 43
Bomb Rack Unloading 43
. -
Flare Launcher Unloading . . 44'
Bombs Away from Aircraft 44.
Chapter IV
Signal
Taking
BOMB-BAY DOOR OPERATION CONMOL
General
Normal Control
Normal Control
System
System
for Opening Bomb-Bay
for Closing Bomb-Bay
46
46
Doors 46
Doors 47
47
48
48
Stand-By Control System for Opening Bomb-Bay Doors
'Stand-By Control System for Closing Botb-Bay Doors
Emergency Control System for Opening Bomb-Bay Doors
? . .
C);,4401R.EIOK;.151W114.
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Page
Emergency Opening of Bomb-Boy Doors with Mains De-
Energized 49
Adjusting-Mioroswitches of Bomb-Bay Door Limit Switch.
Box
-49
Chapter V
MAINTENANCE OF BR-473M OR BR-56 BOMB HOIST SYS= .... 53
Bomb Hoist System Installation in Idrcraft ? 53
Checking and Testing before Operation 54
Hoisting with Single Hoist 54
Hoisting with Two Hoists 55
Manual Operation 56
Routine Maintenance of BR-473M or BR-56 Hoists 57
Chapter VI
PROBABLE FAULTS AND REMEDIES 60
Control and Release Systems 60
3140-39 Signal Flare Launcher System . ... 76- -
013-11p Bombsight Set 77
APPENDIX 84
,,?
A3C .
M15-2M
'BB
- BR-473M
BT-500
BT34.49
BK
B-45
2B-45
BH-45
BK2-142B
Br-1, Br-2,
Br-4, Br-5
RB-15-ORB-11p
RC-1200-ORB-11p
Rep-3-48
Rep-4-49
Rep-6-5
7-50
K-501(
KB6.2A
KBCB-49A
KR37488
KR4-388 ?
KOC-45
KU-547H
KRY-3
Br-3,
50X1
SYMBOLS AND ABBREVIATIONS
circuit breaker;
- autopilot; ?
- bombing equipment;
electric bomb hoist, modernized;
- bomb trolley, 500 kg maximum carryin6
capacity;
- bomb trolley, 3000 kg maximum carrying
capacity;
- bombsight;
- switch;
- gang switch;
- push-type switch;
limit switch;
- measuring instruments available in
the Mi stand set;. .
bombsight altitude transmitter;
- bombsight speed transmitter;
- bomb shackle of group three bomb rack;
- bomb shackle of group four bomb rack;
bomb shackle of group six bomb rack;
- spark extinguisher device;
contactor;
- limit switch;
bomb.release variation box;
bomb rack;
- bomb rack;
- red light filter dome lamp;
- hoisting guide of group, three bomb racks;
- combined tester set; -
?
?
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-
KintO,W.DIS 6
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KCB-49
KY-50
MH-500
MBH-48
MEC
OEB-11p
HBA-48
H-4
HH-45
HK-3-53
HO-4500
HH-5
EYP
PEE-4
PK
P-8, P-9
PH
e.
ok
'np
.
*6 ?
:11CYJI-473
Y1.-10
chkiar.250M46
.NTAE-100-80
MP.
3KCE49
:3CEP-49A
7 bomb release button;
- universal 'key to cock 11AB-48 release unit;
- hoist motor;
- arming mechanism;
ground speed motor ofOHE-11p bombsight;
- optical bombsight (ganged with radar bomb-
sight PEH-4);.
- bomb release unit;
packet-type switch;
push-type - switch;
hoisting hook' to lift bombs to bomb racks;
- 4500 W inverter;
- adjustment device of OHE-11p bombsight;
- signal flare control panel;
radar bombsight; '
- distribution box;
- units of PEE-4 bombsight (navigator's
indicator, navigator's control panel);
- computer of 0HE711p bombsight;
- wind velocity;
- aircraft-to-wind angle;
- drift angle; -
- dropping angle; .
- angle of lateral displacement;
- sighting angle;
- electric trolley of Eff-473M hoist control
system, modernized;
- dynamotor of OHB-11p bombsight;-
- 250-kg high-explosive bomb;
- 100-kg photoflash bomb;
- plug connector;
electricUly-operated, 39-mm signal flare
launcher;
- intervalometer (electric bomb release);
flight altitude;
- time of bomb falling;
1
PH-2
P11-6
PT-40
CRE-51 -
CAE-100-,90
TT-1
7
Y - trail angle;
^ - true airspeed;
O - ballistic coefficient
- change-over
- change-over
- change-cver
AV
relay;
relay;.
relay;
indicator-light;
flare. bomb;
- tester;
- indicated airspeed aerodynamic correction;
target elevation over sea level;
slant range;
- minimum slant range;,-
of
tomb;
50X1
- maximum slant range;
- pitch stabilization angle;
- indicated speed;
- ground speed;.
- indicated altitude;
- temperature on the ground;
- tomperPture at given altiLude;
- train length;
- formation correction;
- heading angle;
- bomb release warning time;
- altitude correction,
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14. Hoist -the. bomb in conformity with the instructions'
for operatf,on of bombhoists of BR.-473M
(See Chaptery),.fOr which:
(a) as-the shackle journals approach the bottom ends of
the bomb rack beams slow down the hoists and carefully bring
the journals into thebeam .211annels;
(b) continue hoisting the bomb seeing that its body is
approximately parallel to the ground:. Check for uniform'.
operation of the two hoists. Hoist the bomb so that the bomb
body is clear of the bomb rack beams; maintain a constant
clearance between. the bomb body and the bomb rack beams;
(c) hoist the bomb as high as the level of tlad top.
latches;. as the bomb approaches the latcheS-Ulow--dowA-the---
,. hois-Zis and align the bomb body to be parallel to. the bomb rack
cross members. While hoisting the bomb slightly shake it up
and 1:'.iwn by the fin; , .
: (d) .bring the bomb onto the bomb rack latches,
procedure being the ciame as outlined above for the .141E-500.
bomb (KA3-488 bomb rack). ?
or BR-56 types
. _
the
:
15. When sure of proper suspension, disconnect the sling
cables-from-the-hoisting-sling and-lower-the latter.on_the _
ground- (Fig.36).
16. When hoisting the bottom 14.B-3000 bomb on the star-
board side, install hoisting frame 13 on the port side bomb
rack (See Fig.35).and fix twin guy 6 -to the hoisting beam. In
this case bring the terminals of the port side hoisting sling
cable from the top pulleys of the bomb rack to th?I sting
frame pulleys and then to the pulleys of the twir guy (Fig.37),
t pass them through the spacer holes and under the bomb body to
secuie to the hoisting sling. , ?
The bbmb hoisting Over, the bombs are equipped with fuses;:
all the auxiliary accessories and hoisting equipment shall be
removed from the bomb bay.
- 25
50X1--
3KCII-39.signal Flare Launcher Loadink
1. Tith cloth remove the lubricant from the launCher.
.2. Release the catch and put the magazine at 90 relative
to the set of tubes (See Fig.16): ' ?
3. Insert four signal flare cartridges into the. tubes
(Pig.38).
4. Return the magazine
i the catch thereby.
5. Check up four squib-initiated igniters,
to the initial position, closing
? ? - ?
insert them '
into the magazine seats (Fig.39), and holding them by fingers
in pairs fix them _in -1.1_e position by turning the handles' of
the spring-loaded lock through 90?-(8-6e-Fig-.17)-.-----
6. Insert the loaded set of tubes with the magazine into
the casing so that narks on the set and on the casing align.
t. Tighten the screw as far as it will go. Load the other
-
two launchers.
?
Pre-Flight Inspection .
Prior to flying a bombing mission the aircraft fully:
equipped for the purpose should be inspected* by*the-navigator-
and armament technicians with a view to testing for.proper.
preparation of the aircraft. ?re-flight inspection is performed
after all the preparatory operations on the aircraft* are over.
Pre-flight inspection involves the following:
1. Inspection of the navigator's,_pilots',_and operator's
cabins to make sure that all the switches on the bomb release
control panels as well as control and instrument panels are
in the OP t' BLIKRINEHO) or 1:TU=.1-1L 11EITPAIllori0) positions. .
while the switches of -the bomb release control circuit breakers
on the circuit breaker panels are ON.
2. Checking whether the amount and calibre of bombs cor-
respond to the mission.
? 3. Checking for proper bomb suspension from the bomb
racks and making sure that all the shackle journals arc reliably
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engaged by the latches (indicator pins are flush With the bohb which are recommended by the
.rack beams) and the shackles are. properly attached (the arrows tive units.
Show noiewise).
4. Checking for correct insertion of fuses into the bombs,
proper equipment of fuzes, setting of delay data, fuze locking
and testing for correct attachment of the parachute rip cords
of incendiary and flare bombs.
5. Inspectlen of 'the bomb bay to make sure that pieces
of auxiliary equipment, tools, bomb hoisting'units:except
those listed in the present Instructions are 'removed from the
compartment.
? 6. Reporting the results of the pre-flight inspection to 1
. the aircraft commander, switching on the bomb-bay interlocking ,
switches and closing the bomb-bay doors.
Closing the .hatch of the interlocking switches-.
Lalitine Maintenance and Inspection:: ?
aa ?
Theascope and time limits ;.7or,reutine maintenance and .
inspections of the bombing equipment are specified by standing
Instructions on routine maintenance and inspections of Bombing '
Equipment. . a?
Routine. maintenance operations. are usually performed .
during the post-flight Servicing and. within the time specially
.allotted fOrthe-Purpose. The-iaSiltS-bt-Tbiltina-tairitenanca-
a
are recorded in the Service Log for' the bombingequipment.?
The aircraft whose bombing equipment has not undergone'
. the required routine maintenance operations cannot be admit- '
ted-fOr flying..
The aircraft bombing equipment is considered serviceable
Onlar.after the elimination of all thefaults discovered duTing.
the flight and in the course of post-flight inspection and
after the completion of the scheduled routine maintenance
. operations.
For routine maintenance and inspections use only those
types of control and test appliances,' 'tools and lubricants
:
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technical descriptions of respeo-
The Person:Tr:11 in charge of routine maintenance and
inspections must be properly qualified to exereisc high
professional skill in maintenance and experience in adjusting
and. testing bombing equipment Unita and mechanisms.
Preparation for Right Flight
Preparation for night bombing includes the following
operations: ?
. 1. AdjuEtiri-g the caps Of all the indidator lampa for the
required illumination. .
? .2. Checking good' repair of the ultraviolet illumination
equipment and.panel.illumination.latps,..: a.
..3. Checking good repair of the extension lamp.
4. Preparing the 013-11p bombsight, directional stabiliz-
er and bombing equipment fer-night'bombing (which is accomplish-.
ed_t_he_same Fay_as_for day . bombing)
_ _ _
5. 1:hen pre-Paring the 011B-11p bombsight particular
attention must be paid .-to ,sure the followings
(a) cleanliness of the bombsight.eptical.system;
(b) proper operation and smooth .adjustment of the
sight reticle illumination;
--
(c) pi'opef .. -eonditin-of-the?luminous coating-on-the--
bombsight and directional stabilizer dials and indices.
bomb-
PO2T-FLIGHTINSP-ZOTION AND'MAINT2NANT.2
After every sortie all bombing equipment units end
:mechanisms should be t31-_-x.Thly inspected; cheeks should be
made for serviceability and proper assembly of the units,_
completion of the sets'and proper connection of the electric
conductors to units as required by the circuit diagrams. Make
sure that all the plug connectcrs are fixed tight With unaon
nuts and locked, that the items of.equipmentinstalled cn
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shock-absorbers stand clear of the aircraft structure, that
all the units are sealed and bonded, equipped with salety fuze
indicator lights and light filters., that the electric con-
-ductors are located clear of shari'edges of the aircraft
structure Cotherwise the place of contact must Tle bandaged
with BMA p.v.c. tape, the extension being-no less than 20 mm
on both sides), that the conductors are not tightened or their
sagging does not exceed 3 - 5 mm. The electric cables of,the
-011E-11p bombsight must provide for a free right- or left-
hand turning turning of the bombsight through 1-300.
Make sure that' the units have not been danPEed mechanical-
ly and that all the inscriptions are in good condition. All
the circuit breakers, buttons and switches- must smoothly and .
easily operate for ON and OFF, the operation being accompanied
Zhy_a_characteristic-click
After the switches and buttons are checked for proper
operation, they must be turned to the OFF a1UCi0)- or
_NTUTRAI!_(TIE2TPAHMO). _positions. All_theiknobs and_dials_must__
rotate smoothly and without seizing. ?
All the faults and malfunctions disclosed during the
inspection must be. eliminated with no delay. The route of
inspection is shown in Fig.l. The inspection procedure is as.
follows: .
1. Turning a screw-driver-counter-clockwise or,en-the----
hatch for interlocking switches (Fig.40) and turn them on
(See Fig.2).
2. Inspect the port side 31CCH-39 signal flare launcher
'(Fig.41) and make sure that the tightening-up screw is screw-
ed to its limit.
; --3;'11.11I out the closing plug and inspect the static vent -
of the 011E-11p bombsight transmitters (Fig.42).
4. Remove the cover from the dynamic pressure tube of.
the 0115-11p bombsight transmitters (Fig.43).
5. Check the outside connection of the TIF-Ilp
.with the Ail 5-2M .autopilot. Make sure that pin 2 of
sight tail end and pin 1 of the connecting rod are inserted
bombsight
the bomb-
in the seats to the limit
wheel spring is connected
directional stabilizer of
50X1
2-9
and locked, and that the drift gear
with pin 3 of the clutch of the -
the A115-2M autopilot (Pig.44.)..
6. Inspect the starboard signal flare launchers (Fig.45)
and make sure that the tightening-up screw is screwed to the
limit;. Make sure that the limit Switch of the bomb-bay red. ?
dome light is held in the Of position by tbe nose L.G. Strut
(Fig.46); .this is done by pressing the stem of the terminal
switch;.the switch should not operate, the' free travel of its
?
stem being 1.5 to 2 mm.
8. On the navigator-operators circuit breaker panel:
inspect altitude transmitter 2 and.speed.tranzmitter
(a)
of the 011E-11p bombsightand their connection to -static-and
dynamic lines (Fig .47);
(b) check operation of BOMB DAY LIGHTING COCBEMEHME E0/50-
_LOTCEKO circuit breaker 3 and BUBBAY LIGHTING (OCBEI4E-
BOMBOoTatkik)- switch 4. -
9. Inspect the 0115-11p bombsight control box (Ftg.48)
and make s.-re that the fusible cutout is intact.
1C. Check operation of signal flare control panel .circuit
breaker A3C-5 located on the co-pilot's circuit breaker
panel (See --- ?
11. Check operation of bombing equipment control units on
the starboard side of the navigators cabin, for which:
(a) check operation of the switch and the signal flare
release buttons; make sure that while turning the sleeve on
the signal flare control panel the colour in the window of...the
cap changes; _
? (b) check operation of the circuit breakers on navigatbf!ra---
ric,ht-hand circuit breaker panel 3 (Fig.49);
(c) check- opertion of the toggle switches and bomb door -
control 'change-over switch 1;
. , (d) check operation of RCE-499 bomb release button;
. (e) inspect the altitude unit (Fig.5C);
(f) -check operation'of change-over switch 1;
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(g) make sure of smooth rotation of altitude setting
handle 2 and altitude scale 3.
12. Inspect. the bombsight, for which: .
(a) check -Operation of the following knobs: trail, time
of falling, train. Make sure of their smooth rotation involv-
ing no seizing;
(b) check operation of bombsight eyepiece 5 and make
sure of its smooth rotation without seizing (Fig.51);
(c) check operation of light filter mechanism 1, paying
attention to the change of colour in the bombsight field of
vision (Fig.52);
.(d) check smooth movement of rheostat knobs for'illumina-
tion of c(.11imator (5) and optical (3) systems; .
? (e) check operation of automatic bomb release mechanism 4
and make sure that the knob intensively returns to its initial
position;
(f) check operation of switches 1 and 2 (See Pig:51);
(g) check operation of the stop of gyroscope.caging
device handle 7;
.(h) check for proper condition of the lamps illuminating
the collimator and optical_systems;
(i) Check operation of the mechanism and knob of col-
limator 8;
(j.) check Operation of drift mechanism engagement knob
and drift correction knob 7 (See Fig.52);
(k) check the position of the mechanical interlock screw
'of the erecting mechanism cutout relay and make sure that the
screw spline is against BOBING,(BOMBOMETAHNE);
(1) check drift knob 9 and sight -turning knob IC (See
Pig.51) for smooth operation;
(m) check operation of the accelerated correction knob;
(n) check condition of the silica gel cartridge;
(o) make sure that WARDING (flPEAMPERAEHNE) and RELEASE
(CEPOC) lamps are intact;
(p) check operation of the synchronization selector knob;
(1) check operation of the sighting button; .
?31
44; ?
50X1
(r) check the sighting knob and the sync;cronization knob
for smooth operation;
(s) check the bombsight for proper mounting and proper
connection with the A11-5-2M autopilot..
13. inspect the computer ?. (Fig.53), for which:
(a) check knob 14 and altitude scales 4, -11 for smooth.
rotation;
(b) check ail.craft speed-setting knob 10, ground speed
scale 6 and aircraft speed scale 5 for smooth rotation;
(c) check wind bearing scale knob- 8 an.d wind velocity
setting knob 7 for smooth rotation;
(d) check temperature setting knobs 2 and 3 for smooth
rotation; -- ? ?-
(e) check aerodynamic speed correction knob 1 for
smooth rotation;
(f) check operation of the bomb ballistic coefficient
I setting .1calob;
(g) check operation of HV (13) and TYT(12).switehes.
14. Check operation of the bombing equipment control
units on the port side of the navigator's cabin:
(a) check .operation of the. switches, protective caps and
the station status indicator button on left-hand bomb release
panel 1 (Fig.54);
(b) inspect 3CEP-4.9A intervalometer 2, make sure that
the dials and knobs rotate smoothly, check operation of the
switches;
(c) check operation of the switches on bottom bbmb release
control panel 3;
(d) inspect KBCB-48 bomb release variation box 1
(Fig.55);
(e) insect IriY-50 spark-extinguisher box 2;
(f) check all 'Lle circuit breakr..:7s on navigator's left-
hand circuit breaker panel 1 (--iee 1.Fig.56) for proper . opera-
tion;
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(g) open the cover of A.C. fuse box 2 on the navigator's
electric panel and check if the bombsight Circuit fusible
cutouts are available.
Hate: Check switches, buttons and light filters for
mechanical,faults.
15. Energize the
operations: _
.(a) switch on the A3C-5 circuit breakers of the bomb'
door control and bombing equipment indication system on the .
navigator's left-hand circuit breaker panel and make sure that
indicator light BOMB-BAY DOOR'CLOSED (MK 3AKEIT)
bay door control panel. is burning; ?
(b) by the pressure gauge on the pilot's middle panel
make sure that the hydraulic system is under Pressure. The
pressure gauge readings may range within 70 to 80 kg/cm2;
(c) give the command CLEAR THE BOMB-BAY DOOR (OT ROKOB)
and after receiving the report DOOR CLEARED (ECM 0111100B)
open bomb bay doors by_the.toggle switch. Make sure that the
indicator light BOMB-BAY DOOR OPEN (MK OTKPIIT) comes on, .
while the indicator light BOMB-BAY DOOR CLOSED (.1110K 3AKPIDIT)
goes out;
(d) turn all the circuit breaker switches OFF;
- (e) de-energize the aircraft mains.
caps and emergenCY-bemb.
switches on the pilot's panel .(Fig.57).
17. Check the protective Caps, the switches of ARMED "
(B3PHB) and emergency bohib release With the mains de-energized
on the pilot's panel (Fig.12).
18. Check operation of bomb-bay door closingtoggle
control system on the pilot's hydraulic
aircraft mains
and
perform the following ,
on the bomb-;
release
switch 1. of the stand-by
panel (See
' 19. Inspect the navigator-operator's instrument panel
(Fig.58) and check operation of the NCE-49 bomb 'release
.button.
20. Set the interlocking switches to OFF.
. 21.
(a)
(b)
device;
(c)
(d)
Ji.e...41e., ? ? -
?
50X1
Inspect the following units:
micrpswitch Vox 3 (Fig.59);
soleiloids 1 of-hydraulic drive emergency unlocking
bomb-bay red dome light 2;
bomb-hoist power supply plug connectors on the forward
_
distribution box of fuel pumps.
22. Inspect. the following units of boMbing equipment
located in.the-bomb bay:
(a) bomb racks.KA3-488 and K:44-388 and.. all parts,
assemblies and unitsincorporated suen as: I1BI[_18 bomb' shackle
release.Units, i:1H-4c :arming mechanism; pulleys for cable.;
linkage, plug connectors,. BH-47 boxes for interlocking switches,
check operation of Ilatah centrol handles;
?(b) atiachment fittings of the bombackto those
aircraft; .
(c) make sure that all the bomb release distribution boxes
are-locked;
.(0-MakeThurt-that? all-the free-electric bunch-conductors--
ate connected to the sockets;
(e) inspec-i; the bomb hoist power supply plug connector on.
rear fuel pump distribution box-2. .
? 23. Inspect the following heisting units:
(e)-IR-47-3M_ .electromech4.1_boph. hoist _asSe.Tibly,
triosheave'end pulley 1, twin guy, hoisting hook, single-sheaVe
_ - .
end block, H3-547H guide, movable blocks,'hoisting.frame,
hoisting.sling-(ig:60), etc.;
----(b) make sure that there are no .breaks, frays or ruptures
of the strands of the hoisting cables, that all the cables are
::::
icatcd with pc.trolatum and cable terminals are not damaged;
(c) inspect. all the pulleys of the hoisting system, make
that they are reliably secured in the brackets andproperly'
rotate on the axles;.
.(d) inspect ths a tachment-units of the hoisting system..
of -the--
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- 'Llisgnment of OHEllp Dombsigh-li . ? .
? Directional Stabilizer with AircraLI
Longitudinal AXis,
The permissible angle of the directional stabiliz-
er with the aircraft longitudinal axis should
.not exceed 15'.
2. The alignment of the directional .stabilizer may
be. checked with the aircraft being either. in
the flight line position or resting on three
points over an even concrete platform.
1. Draw a 20 - 30 m. line ahead of the aircraft to mark
? the longitudinal axis and a parallel line at a distance of
?? -
7777- .--.15-01:4-ta the left -to denote thesight optical-axis displace--
ment- relative to the aircraft axis. .
? 2. Set the directional
- --thb-hobbtlght-Spherical-l-eveI.
Y7f.
? :
?
stabilizer in a horizontal plane by
?
3. Set the trail-knob to zero.
4. Engage the bombSight clutch and disengage the auto-
pilot clutch.
5. Disengage the drift stabilizer knob and by the bomb-
sight turning knob set the bombsight to zero drift on the
drift angle sCale-of.the directional 'stabilizer.'
6. Make sure that while turning the sighting
knob the
sighting beam travels along the auxiliary (second) line within
--the entire sighting range;
7. If the sighting beam deviates from the auxiliary line
by more than_15.!_a1 sightinganglep_19_to15? and by more than
25' at sighting angles over 75.61 it is necessary to loosen-. -77
?- ?
the forward bolts fastening the foot of--the-directional
stabilizer bracket and turn the foot to an extent ensuring
the deviation . within the allowance 'specified above. Tighten.
up and-lock the fastening bolts of the foot of the directional 1
stabilizer bracket.
. 8. Make sure that the bombsight is set to the zero drift- ?
angle.
50X1
35-.-
Clevmdng and Imbrication
of 3HCH-39Cignal Flare Launchers
The launchers must be kept clean and Properly maintained.-
Cleaning the launchers which a14--to be mounted in the aircraft
is imperative in the following cases:
(a) after firing; : ?
(b) after a prolonged idle period (5 tc l0 days); -
(c) by an order of the unit armament engineer, ,which may
concern the occasion when the 1=chere must be cleaned'after
flights involving no actual firing when they have been exposed
to snow, rain or sand.
The
provided
? The
launchers 'should be cleaned in places specially.:
for.:cleaning.aircraft_gun armament?
following materials are used for cleaning;
1..-1Zerosene for removing powder fouling and cleaning
perts.affec-Tga-by powder gases as well as for
_
the current-;carrying and insulating parts of the
_
the. launcher
_ _
cleaning
launcher. After cleaning with kerosene all the parts should be
rubbed dry. . ? _
2. Rifle oil for lubricating the launcher .parts after -
cleaning in summer-only.. -_
? 3. -grease- TMAIRM-201 -for ltbricating-the-launcher.parts
for altitude flights in summer as well as for lubricating '
them in winter. ?
2. flags for cleaning, rubbing and lubricating; Short flax
fibre is recommended for cleaning only.
5. Sponge for cleaning the tubes.
6. Brush for lubricating the tubes.'-- -
7. Handle for cleaning and rubbing the contact pins.
Contact pins are cleaned with the assistance of the
handle with a recess in its. threaded part; the recess serves
to hold a piece of soft clean. cloth soaked with kerosene. The
working part S of-the contacts are cleaned of soot by bringing
the handle into the casing, then they are rubbed with dry
clean cloth.
,
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-
36
To avoid distortion and jamming, cleaning and .wiping of
contacts must be done with care.
Tever lubricate the current?carrying or insulat?
ing parts.
Bomb_lng Eouipment Storage
As a rule most of the units of the bombing equipment are
not coated with protective paint, they are protected only by
anodiZed or oxidized films; because of the specific operating
conditions the surfaces of the units are liable to consider?
able damage.. -
, To avoid. damage all units which are.not,installed in
the aircraft (such as: bomb racks, aming wire, hoisting
system units) should be stored on racks in a dry, aired room
protected from penetration Of dust and sun rays.
- All the units of
must be provided with
nrming wire: BR-473M
bomb trolleys must be
the equipment installed in the aircraft
covers. The ONE-11p bombsight set,
electromechanical bomb hoists and T?CYJI
supplied with loose covers. The bomb
hoisting equipment should_bestored in_bags.
-
After eVery operation the hoisting units must be cleaned
of dirt, dust and moisture. All thelloisting cables must be
constantly greased with petrolatum. Sheave axles, ball bear?
ings, bomb hoist reduction gears, pressure rollers, drum
disengaging mechanism, bomb hoist brake switch and the trolley
wheel?boaririgs should'be periodically greased with WATRM-201 I
grease.
The bombing equipment should undergo general inspection. !
every 15 days and be checked for serviceability. Storage
conditions must also be checked.
:
If any traces of corrosion are detected on the surfaces
of the units, measures should be taken for their removal.
When performing general inspection follow the procedures
outlined in Chapter 1 of the present Inst-ructions.
-
..Aa?
Preparation for RestationinA
In case of changing the base of the aircraft all the bomb
racks and hoisting equipment should be mounted in the stowed
positio:?Pig.61). Por this purpose the following procedure
: is adopted: ? .
1. Put all the bomb racks in the stowed position.in.accord?
ance with the diagram of bombing equipment arrangement for
restationing. Mount the 'hoisting beams on the bomb racks..
2. Pack a set of arming wire in a special bag and hoist
it to the bomb racks.
. 3. Into two special bags rack the hoisting equipment,
. .
which-comprises.: H43-547---guides,- two?sheave ? -
single?sheave end pulleys,DE3-53 hoisting hooks, rip' cord.
fastening cables, bomb rack hoisting pulley, movable blocks,
hoisting sling, fastening slings, twin guy, hoist crank, hoist.
.?
c9=st:::rient_straps fastening end-pulleys'to hoists, and
A complete list of the equipment is iven on the plate
attached in theilOCAB compartment.
the bags with the esuipment'.onthe4ack in the
IJOCAB compartment and secure them with straps (Fig.62).-
5. Mount two BR-473M bomb hoists on the stowed position..
brackets in the UOCAE compartmeLt. The other two'hoists
should be mounted on the T?CYR bomb trolley.
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neclassified in Part - Sanitized Copy Approved for Release 2013/11/07 : CIA-RDP80T-00246A071000190001-2
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.Chapter II
BOMB RELEASE CONTROL
RELEASING BOMBS FROM BOMB BAY
The combat bomb release performed by"the navigator or the
,navigator-operator is-closely connected with aiming in range.
and in azimuth by means of the 011B-11p bombsight or the PRI14
radar bombsight. Here we assume that the preparatory work with
the 013-11p and PEIT-4 bombsights is finished and that the
engagement of the bomb ra1ease-iWif-Ohe6-arid-preParing bombing
equipment units-is performed' as is Outlined in the Instruc-
tions for Navigation and BomMng
.To perform sight-controlled bomb release the navigator
should.do the following:
1. Make sure that all the circuit breakers of the bombing
-equipment are switched on:
2.
set the
By means of knobs and switches on the intervalometer
required method of bomb 'release (SEL or
TRAIN), bomb-release-interval -and- the-number of-bembs ----
. (salvoes) to be dropped. -
3. Make sure that all the bombing equipment controls are ;
in the initial Position. .
?
&It: Items 1 to 3 are, fulfilled prior to assuming the
bombing run.
.? 4. Turn on the master bombing switch en the bomb-bay '
door control panel.
5, When the sighting angle equals 55 or 600 cook the
lever of the automatic release mechanism on the ':011E..11p
bombsight.
;
50X1
6. Turn on the Switches of the rack.selector relay and:
the salvo sWitch SIR= 'BO IS or IN PAIRS.
Ea:La: Items .4 to 6 are fulfilled when aiming during the
bombing rUn.-
7. By the station status indicator lights make sure all
the bombs are released.
Turn off the switches of the rack selector relay, .close
the bomb-bay doors, turn Off the master bombing switch and the.
bombsight ground speed motor.
To release bombs by the bomb release bUtton the navigator
must do the following:
- 1. make sure that all.the circuit breakers .of the bombing .
.equipment are switched on.
2. By means of knobs and switches on the_intervalometer.
set the required method.of bomb release (SL or TRAIN), tomb
release interval an the number of bombs (salvoes) to be
dropped.
.. 3. Make_ sure_that_all .. the bombing equipinent controls are-
in"the initial position:
. .4. Turn on the master bombing switch on the bomb-bay' door
control panel.
5. .1fter assuming the bombing run -open the bomb-bay doom
by the, switch. ' ?
---6.Then hc creen warning light '' th6-b-Omboight--fIash.es"..-
on, turn on the rack selector relay switches and-the Salvo V.
VV V
switch. _ __
_ _ _
. . -7. Theft the sighting angle index alignes with the dropping
angle index in the field of vision push the bomb release v
button. - ?
'In the course of aiming b: means of tne.Pg1-4 .sight all
the operations enumerated in Items 1 to 5 are performed by
the navigator. Bombs'are released by the navigator-operator
by means' of pushing the bomb release button on his instrument'
panel at the moment when the target image alignes with the
range mark on the indicator. screen.
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8. By the station status indicator lights make sure all
the bombs are released..
' Turn off the bomb rack selector relay switches, close
bomb-bay doors, turn off the master bombing switch and the
bombsight ground speed motor..
To effect the emergency SAFE bomb release by the navigat-
or the emergency release switch on the navigator's left-hand
release control panel should be turned on.
After dropping the bombs turn off the emergency release
switch and close the bomb-bay doo:.7s.
In case of an ARMED bomb release it is necessary to turn
on the ARMED switch on the pilot's instrument panel.
For the emergency SAFE bomb release by the pilot the
emergency release switch on the pilot's instrument panel must
be turned on. When dropping the bombs ARMED, it is necessary
.to -him on the emergency release ARMED switch on the same .
panel. After dropping the bombs, turn the switch off and close
.the bomb-bay doors.
To effect the emergency bomb release with the mains
de-energized the pilot must unlock the release handle on the
pilot's control panel and pull it as far as it goes. Mien
dropping the bombs ARMED, it is necessary to turn on the
ARMED switch on the same panel and to close the bomb-bay doors.
_Note:
In case of an emergency bomb release by the pilot
the bomb-bay doors are closed only by the bomb-bay
door closing switch of the stand-by control system
on the pilots'.hydraulic system control panel
(Fig.63) after setting the emergency release
switches in the OFF positiOn.
NAVIGATOR'S OPERATIONS IN CASE BOMBING EQUIPMENT UNITS FAIT
DURING BOMB RELEASE
,TING: If a failure of one of the units of the bombing
equipment is detected in the Course of flight, it is
necessary first to check the engagement of all the
50X1
- 41
circuit breakers on the navigator's left- and right-
hand cirCuit breaker panels.
1. If the bomb-bay doors cannot be opened by the bomb-
sight it is necessary to make one of the following operations:
(a) open the bomb-bay doors by the switch of the normal
bomb-bay door control system;
(b) open the bomb-bay doors by the bomb-bay door opening
stand-by system switch located on the bomb-bay door control
panel;
(0 open the bomb-bay doors by the switch on the pilot's
control panel.
2. If the bombs are not released from the bomb-bay by the
sight it is necessary to check the following:_
(a) whether the bomb-bay doors are open (watch the bomb-
bay door position indicator lights);
(b) engagement of the bomb rack selector relay switches;
(c) proper preparedness of the intervalometer;
(d) reliability of contacts in plug connectors BOMBSIGHT
(BOMBOIIPNLIEff) and STABILIZER (CTAMEM3AT0P) on the autopilot
directional stabilizer.
After the checking procedure perform another bombing
run and release bombs by the bombsight. 'If the bombs are not
released by the bombsight, release then by pressing the
navigator's or navigator-operator's bomb release button.
3. If the bombs are not released by the bomb release
buttons they must be released by the navigator's or pilot's
EMERGENCY RELEASE (ABAPHRHUR CEPOC) switch which is first
turned in the ARMED (B3PHB) position in case the bombs are
to be released ARMED.
4. If the bombs are not released after taking all the
possible measures, it is necessary to perform the following
operations:
(a) close the bomb-bay doors;
(b) turn off all the switches on the navigator's panel;
(c) switch off all the bombing equipment circuit breakers :
on the navigator's circuit breaker panels.
?':',P.91140)4;Pts4g, ?
Declassified in Part - Sanitized Copy Approved for Release 2013/11/07: CIA-RDP80T00246A07100.0-196001-2
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5. If the bomb?bay doors are not closed by the switch of.
the bomb?bay door control panel it is necessary to.do the fol?
lowing:
. (a) check whether the EMERGENCY RELEASE (ABAP14HN2
CBPOC) saitches,on the pilot's and navigator's panels are in
the OFF position; .
(b) close the bomb?bay doors by the pilot's bomb?bay door
closing stand?by system switch.
"r? 7
? , _
50X1
. Chapter: III
REMOVING BOMBS FROM BOMB RACKS
Bombs may be removed from the bomb racks in .case of
failure to release them in flight or in. case the, loading. ?
? variant has to-be changed, etc. While'removing bombs it. is
- .necessary to strictly .follow all. the.i.nstruetions_outlined in
Chapter 1.
BCMB RACK UNLOADING
1. Screw out the bomb fuzes.
2. Install the bomb hoists, end pulleys and other.eleMents
of the hoisting system.'
3. Arrange the cables in accordance with the bomb rack
rloa-ding-var-larit:
4. Depending on the calibre of the bomb 'to be removed.
engage it with the hoisting hook or attach the hoisting sling
to the botto6 bomb.
5. Take up the. cable slack;
6. Cock all the bomb Shackle release units if.
they have not been cocked.
7. Put the latch group control handles in the UNLOADING
(PA3ITY3KA) position.
8. Lift .the bomb so as to sink the lower station latches.
Note: To avoid the upper bomb sliding out of its latches,
see that -the lowertbotb.does not touch the upper
one during the removal.
9. Lower the bomb and detach the shackle from it.
,
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10. Remove all other bombs following the same procedure.
11. Put the latch group control handles in the LOADING
(3Ara3KA) position and mount the shackles en the approPriatoi
bomb racks.
12. Release all the nu-4.8 bomb shackle release units.
SIGNAL FLARE LATTITCHM UNLOADING
1, Screw off the tightening-up screw f the launcher.
2. Extract the set of tubes with the magazine from the
launcher case.
3. It-ess the catch pawl and open the magazine.
4. Extract the cartridges fromthe tubes.
5. Unlock the squib-initiated igniters and pull them out.;
6. Close the magazine.
7. Fix the set of tubes in'the jacket.
ffa-12: If firing took place the flare block should be
primarily sent to the shop for cleaning.-
-8. Unload the other launchers.
TAKING BOMBS AWAY FROM AIRCRAPT
Taking Away Bombs Removed from Bomb Racks
1. Bring ET-500 or ET3-49 bun; trolleys onto the bomb.
2. Fix the bomb trolley lifting device to thebomb suspen--
sion lugs.
3. By means Of the hoist lift the bomb onto the trolley
and fix it with sway braces.
.4. Tow the bomb trolley. loaded with the bomb to the -
place of packing and unpacking the bombs..
5. Lower the bomb from the trolley onto the supporting
frame.
6. Grease the bomb suspension lugs with slushing grease.
Screw the plugs into the nose and tail fuze adapters.
7. Similarly take away all the other bombs removed from
the aircraft.
1
1
50X1
8. Collect the hoisting accessories and put the working
place in order.
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'
-Chapter IV
AOMB-BAY DOOR OPERATION C(iNTROL
. GENERAL
1. The following types of bemb-bay dcor control are dis-
tinguished: normal, stand-by and emergency. Bomb-bay doors are
controlled from the navigator's and pilot's control panels
(Fig.63).
2., Prior to opening or closing the bomb-bay doors on the
ground the following operations are required:
(a) make sure that there are no obstacles in the bomb barr
or under it;
(b) give the command CLEAR BOMB BAY DOORS (OTTDKOB)
and on receiving the return command BOMB BAY CLEARED (ECM OT
RDKOB) open or close the doors;.
(c) make sure that the interlocking switches are ON;
(d) check the pressure in the hydraulic system by the
pressure gauge installed on the pilot's middle instrutent
pan elJ.
The reading of the instrument must be within 70 to
80 kg/cm2.
NORMAL CONTROL SYSTEM FOR OPENING BOMB-BAY DOORS
1. Make sure that A3C-5 circuit breakers NORMAL BOMB
DOOR CONTROL OTIPABJEHIE CTBOPOK BOMBOADKA EOPM) and BOMBING
EQUIPMENT INDICATION (OXIMAILEOMEOB3OPY1.) on the navigator's
circuit breaker left-hand panel are ON.
2. Make 'sure that BOMB DOORS-OPEN (ADK OTKPUT) indicato)
light 7 is not burning while BOMB-BAY DOORS CLOSED (JK
3AKPHT) indicator light 8 is on (Fig.63)..
50X1
47 o?--
3. Put switch 61n the OPEN (OTKPHT) position and hold
'it till the BOMB-BAY DOORS OPEN (ADK OTKPHT) indicator light
;flashes on.
4. Make sure that the BOMB-BAY DOORS CLOSED (RDK 3AKPHT)
I indicator light has gone out,
- -
NORMAL CONTROL SYSTEM FOR CLOSING BOMB-DAY DOORS
1. Make sure_that.A3C-5 cArcuit breakers NORMAL BOMB-BAY
DOOR CONTROL (YHPABAEHHE CTBOPOK BOMBOADKA HOPM.)and BOMBING
EQUIPMENT INDICATION (CHrHAA. BOMBOBOOPYI.) on the navigator's,_
circuit breaker left-hand panel are ON.
2. Make sure that BOMB-BAY DOORS OPEN (RDK OTKPHT) .
indicator light 7 is burning whereas the indicator light 8
BOMB-BAY DOORS CLOSED (ADK 3AKPHT) is off.
3. Put switch 6 in the CLOSED (3AKPHT) position and ?
hold it for 5 or 6 sec. after the BOMB-BAY DOORS GLOSED (MK
3AIGHT) indicator light flashes up:. - ? .
4. Make sure that the BOMB-BAY DOORS OPEN MK OTKPHT)
Indicator light has zone out.
STAND-BY CONTROL SYSTEM
FOR OPENING BOMB-DAY DOORS
1. Make sure that A3C-5 circuit breakers STANI)-DY BOMB-
BAY DOOR CONTROL (YHPABEHNE CTBOPOK BOMBOADKA 3AHACH..) ? and
BOMBING EQUIPMENT IRDICATION (MHO. BO4B0BOOP57.). on the
navigator's circuit breaker left-hand panel are ON. ?
2. Make sure that BOMB-BAY DOORS OPEN (JK WIGHT)
Indicator light 7 is not burning and BOMB-BAY DOORS CLOSED
(MK 3AKPHT). indicator light 8 is on.
? 3. Turn on switch 9 of the stand-by control system for
opening bomb-bay doors and hold it till the indicator light
BOMB-BAY DOORS OP7T (NDK OTKPHT) flashes up. ?
. 4. Make sure that the BOMB-BAY DOORS CLOSED (ADK 3AKPHT)
Indicator light has gene out.
5. Turn off the switch.
-
;F9rtfigtli;i1SsEm
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48
STAND-BY CONTROL SYSTEM FOR CLOSING BOMB-BAY DOORS
1. Make sure that A3C-5 circuit breakers STANDBY BOMB-
BAY DOOR CONTROL (YgPABREHHE CTBOPOR EOMBOOKA 3AgACH.) and
BOMBING EQUIPMENT INDICATION (CHrHAff. BOMBOBOOPM.). on the
-navigator's circuit breaker left-band panel are ON.
2. Make sure that BOMB-BAY DOORS OPEN (MR OTRPHT)
indicator light 7 is burning whereas BOMB-BAY DOORS CLOSED
()IOR 3ARPUT) indicator light 8 is out.
3. Press switch 10 of the stand-by control system for
? closing the bomb-bay doors on the pilot's hydraulic control
panel and hold it ON (BRADIEHO) for 5 or 6 sec. after the
BOMB-BAY DOORS CLOSED (ER 3ARPHT) indicator light flashes up.
4. Make sure that BOMB DOORS OPEN (MR OTKPHT) indicator
light is dead.
EMERGENCY CONTROL SYSTEM.
FOR OPENING BOMB-BAY DOORS
1. Make sure that A3C -5 circuit breaker EM2RGENCY BOMB
RELEASE (ABAPHRHA CEPOC EOMB) on the navigator's circuit
breaker right-hand panel and A3C -5 circuit. breaker BOMBING
EQUIPMENT INDICATION ( ofruff. BOMBOBOCP.M) on the navigator's
circuit breaker left-hand panel are ON.
Make.sure that BOMB-BAY DOORS OPEN (JIiDK OTRPHT)
Indicator light 7 is not burning and BOMB-BAY DOORS CLOSED
(JDOIC 3ARPHT) indicator light 8 is on.
3. Open the proteCtive cap and turn on.emorgency release
switch 11 on the'top bomb release control panel or switch 14
on the pilot's instrument panel. After the BOMB DOORS OPEN
ODE OTRPHT) indicator light flashes up, turn the switch off.
_4. Make sure that BOMB-BAY DOORS CLOSED (MK 3ARPUT)
indicator light has gone out.
EMERGENCY OPENING OF BOMB-BAY DOORS
WITH MAINS DE-ENEMIZED
50X1
Press switch 12 on the pilot's motor panel and hold it
till the bomb-bay doors get open.
ADJUSTING MICROSWITCHES
OF DUMB-BAY DOOR LIMIT SWITCH BOX
In the course oT aircraft maintenance thc adjustment of
the bomb-bay door limit switches must be periodically checked.
Improper switches should be adjusted for 68? of the bomb-bay
door opening and for a complete opening.
Checking Procedure
1. Disconnect the bonding strips of all the rods from the
doors.
2. Rocking the doors extract the bolts fastening the rods'
to the doers and take them out of the seats.
3. Turn on the safety switches.
4. Make sure that hoMb-ddor open position indication
limit switch 2 (Fig.64) is engaged, for which:
(a) switch on A3C-5 circuit breakers BOMB-BY DOOR
CONTROL (IMPABJEHNE CTBOPOR BOMBOJIDKA) and INDICATION (cmrHA-
E3A1XH) on the navigator's circuit breaker left-hand paner;
(b) make sure that DOME-BAY DOORS OPEN UDR OTKPHT)
Indicator light on the bomb-bay door control panel is ON.
This indicates that the microswitch is in the working posi-
tion,
5. Make sure that emergency ARMED release relay switch 8
is engaged. For this purpose:
(a) remove the covers from the bomb 'release distribution
box, emergency bomb release distribution box and from the
emergency bomb release distribution box with the mains de-
energized;
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nprincciiied in Part - Sanitized Copy Approved for Release 2013/11/07: CIA-RDP80T00246A071000190001-2
? Declassified in
Part -Sanitized Copy Approved for Release 2013/11/07 : CIA-RDP80TOC)246A071000190001-2
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? (b) switch on A3C-10. circuit breaker EMERGENCY ARMED
RELEASE (B3PHB .HP14 ABAP.CBPOCE)on the navigator's circuit
breaker right-hand panel;
(c) turn on'switch ARMED (B3P0) on the pilot's instru-
ment panel and make sure that the P11-2 relay in the release
distribution box has functioned.
6. Make sure that limit switches 5 engaging combat bombing
relay have functioned. For this purpose switch on A3C-2
circuit breaker COMBAT BOMBING INTERLOCKING RFT,AYS (BROKMPO-
BMW PERE BOEBOrO.BOMBOMETAHNR) on the navigator's circuit
breaker left-hand panel and, make sure that P11-6 relays in the
release distribution box have functioned.
Make sure that limit switches _e engaging 1311-2 emergenc
release control relay have functioned. For this purpose ? switch
on A3C-2 Circuit breaker EMERGENCY BOMB RELEASE CONTROL RELAYS
(PERE YEPABREHMH ABAPHMCBPOCA BOMB). On the navigator's
circuit breaker_right-hand.panel and make sure that P11-2
relay's in the emergency release distribution box have function-
ed.
8. Make sure that emergency release circuit interlocking
limit switch 3 with the mains de-energized has functicned.
For this purpose: -
(a) unlock the bothb.releabe handle for emergency release__
with power supplied from the storage battery system and turn
it on; make sure that the K-50A emergency release relays
(for the mains de-energized) installed in the emergency
release distribution box have functioned;?
(b) push the handle back to the initial position.
9. Make sure that combat bombing relay limit switches 5
get connected to the circuit before emergency release control
relay limit switches 6 are energized. ?or this purpose:
(a) put the bomb-bay door normal control switch in the
CLOSED (3AKPEITO) position;
(b) close the bomb-bay doors by slowly operating the hand
pump till the P11-2 emergency release control relays in the
-51-
50X1
emergency release distribution box return to the initial posi-
tion;
Note: Communication between the personnel 'participating
- in the operation is accomplished through the .
interphone systeit:
(c) :;everal times simultaneously switch off and on both
A3C-2 circuit breakers EMERGENCY BOMB RELEASE CONTROL RELAYS
(PERE YHPABREHMH ABAPARH.CBPOCA BOMB) on the navigator's
circuit breaker right-hand panel and make sure that P11-2
relays in the emergency release distribution box do not
(d) several times -simultaneously turn off and on A3C72
circuit breakers COMBAT BOMBING INTERLOCKING RELAY (BR0KRP0-
WI-1E0E PERE BOEBOPO BOMBOMETAHM) on the navigator's circuit
breaker -left-hand panel and make sure that-PH-6 relays in '---
the release distribution box pick up and drop out.
10. Close the bomb-bay doors by operating the hand pump
till roller_17 disengages. wedge 14. Make sure. that the BOMB
DOORS OPEN (OK OTKPk) indicatorlight haS-gone out-and that
P11-6. and P11-2 relays in the release distribution box have -
returned to the initial position.
_1_1. Operating the hand pump close the bomb-bay, doors till
v
roller 19 is disengaged from 'wedge 15. Make sure that K-50A
relay in theemergency release-distribution_box (with the
Mains de-energized) does not function while performing the
_
operatins outlined in Item 8 of this Section.
12. Operating the.handspump close completely the tomb-bay
doors and make sure that .BOMB-BAY DOORS CLOSED ( 3A1{PHT)
indicator light on the bomb-bay door control panel comes on.
13. Open the bomb-bey doors.
14. Turn off all the circuit breakers and switches.
Close the covers of all the distribution boxes. -
Adlustina Limit Switches_
15. Remove lock wire 20.
16. Fulfil the operations listed in Items 1 2 and 3.
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/07: CIA-RDP80T00246A071000190001-2
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Declassified in Part - Sanitized Copy Approved for Release 20:13/11/07 8700246A...071,000190001-2
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17. Operating the hand pump place rollers 17 and 19 to
the middle of the bevelled part of wedges 14 and 15.
18. Turn appropriate adjusting screw 21 clockwise until :
the microswitch clicks and make a check according to the
appropriate Item of the Section.' ?
19. Lock the adjusting screws with wire.
20. Fulfil the operations mentioned in Items 13 end 14.'
? at.2: While removing the limit switch box to replace
the switches follow the instructions, of the
Technical Description of the Bombing Equipment.
*774
* _ .