ENGLISH TRANSLATION OF TECHNICAL DESCRIPTION AND OPERATING INSTRUCTIONS FOR THE SOVIET AUTOMATIC AERIAL CAMERA AFA-33M

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00247A001300290001-4
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 152
• Document Creation Date: December 23, 2016
• Document Release Date: November 18, 2013
• Sequence Number: 1
• Publication Date: September 28, 1964
• Content Type: REPORT

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CENTRAL INTELLIGENCE AGENCY
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1 50X1
,
This material contains information affecting the National Defense,of the United States within the meaning or tne zspionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthort9ed rworann In nanhibitael Isly law
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SEM
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- COUNTRY
USSR
REPORT
SUBJECT
English Translation of Technical
DATE DISTR.
.4er September 1964
Description and Operating
Instructions for the Soviet
NO. PAGES 1
Automatic Aerial Camera AFA-33M
REFERENCES
DATE OF
INFO.
PLACE &
DATE ACQ.
THIS is UNEVALUATED
INFORMATION.
SOURCE GRADINGS ARE DEFINITIVE.
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APPRAISAL OF CONTENT IS TENTATIVE.
,
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1. A copy of the English translation of a Russian-language manual
entitled 0:?isaniye i instruktsiya po ekspluatatsii i
tekhnicheskomu obsluzhivaniye avtomaticheskogo aerofotoapparata
AFA-33M (Description and Instructions for Use and Technical
Servicing Of the Automatic Aerial Camera AFA-33M)
Distribution of Attachment for Retention:
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DESCRIPTION AND INSTRUCTIONS
ON OPERATION AND TECHNICAL SERVICING OF
AUTOMATIC AERIAL CAMERA AFA-33M
SECRET
NO FOREIGN DISSEM
GROUP I
En/sided from ovecreiatie
downgrading ond
declassification
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DESCRIPTION AND INSTRUCTIONS
ON OPERATION AND TECHNICAL SERVICING OF
AUTOMATIC AERIAL CAMERA AFA!.33M
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This description is intended to familiarize
the reader with the design of the AFA-33M
aerial camera, with rules of operation, and
with the most frequently encountered mal-
fundtions and methods of eliminating them.
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CONTENTS
'SECTION ONE
Technical Description of the AFA-33M
page
I. General Characteristics of the Camera
II. Basic Technical Data
III. Description of the 4FA-33M Camera
1
1
1. Camera Housing
2
2. Objective. Lens:Part of Camera AFA-33/20M
5
3... Objective Lens Part of Cameras AFA-33/50M 75M,
100M
6
4. Lenses of the AFA-33M Camera
5. Shutters of the AFA-33M Camera
'8
6. Film Holder -
14
7. Command Instrument KPU2
21
8: Drive and Blower Units
28
9.'? Electrical Cables
29
10. .Cardan Shaft
31
11. Flexible Hose
31
12. Camera.Mount
31
.13.. Packing'
33
14.:- Interdependence of'Aerial Camera AFA-33M/20M
Components and Description of Electrical Wiring
33
15. Interconnection of Aerial Camera AFA-33/50M, ?
AFA-33/751v1, and AFA-33/100M Components .
38
16. IntercOnnection of. AKAFU-33 Mount With Aerial
Camera-AFA-33M
39
APPENDIX No 1. . Table of Altitude Ranges
43
APPENDIX No 2. Table of Light Filter Faotors
45
APPENDIX No 3. Parts List, Weights, and Dimension Data
45
.SECTION TWO
Instructions on Operation and Technical Servicin -
of Aerial Camera AFA-33M
I. Basic Regulating and Technical Data 49
Instructions on Operation and Technical Servicing 54
1. Preliminary Checking 54
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page
?'2. ?Pre-Flight Preparation of the Camera 59
3. Operation of the Camera in Flight. 82
4. Post-Flight Preparation 614
5. Unloading the Film Holder 65
6. Loading the Film Holder ? 65? '
7. Routine Maintenance 67.
? 8. Adjustment of the Camera for Flight Under
Winter Conditions
? 9. Storage of the Camera
10. Preservation of the AFA-33M for Storage 70'
III. Characteristics of Lubricants Used for Preserving
? Aerial Photographic Equipment ? 73
IV. Malfunctions in 'the Aerial Camera and Their Causes
MIMIMB
V. Order for Correction of Camera Malfunctions 77
Instructions on Handling the Coated Lenses ?86
Instructions on Maintenance of Type MU-010 Electric Motors 86
Instructions on Restoration of Selenium Rectifiers 89
List of Designations for Photographs 90
?
Photographs
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SECTION ONE
:TECHNICAL DESCRIPTION OF TBE AFA-33M AERIAL CAMERA
I.- General Characteristics of the Camera.
The AFA-33M aerial camera is fully autoMatic with remote control
from a command instrument and is designed for taking aerial photographs
of strips, areas, and individual objects for purposes of photo reconnais-
sance and photographic observation of the results of bombing.
? In addition, the AFA-33M is designed for taking topographic aerial '
photographs.
Aerial photography of one, two or three strips during a sinee
? pass of the aircraft is possible by placing the AFA-33M on automatic
- oscillating camera mounts of the type (AEAFU-3, ARAFU-156) AHAFU-33.
Aerial photographs may be taken with this camera at different
altitudes depending on the desired scale.
Minimum permissible -altitudes with respect to the flight speed
and allowing an image shift 'of 0.1 mm at different 'exposures may be
determined from a special table (see appendix NO 1, p 43).
II. Basic Technical Data
''''''?%.,Variation of
the AFA-33M
Data
'Type of lens
'Focal length, cm
Relative aperture
Field of view .
angle .
Type Ofshutter
Exposure range, sec
Shutter efficiency
Light filters
?
AFA-
33/20M
AFA-
33/50M
AFA-
33/75m
AFA-
. 33/100M
"Orion-la"
20
1:6.3
"Indust-52"
50
1:5
"Telemar-2"
75
1:6.3
"Telemar-7"
100
1:7
? 74'
34?
23o
17o
iris-type
Er---louver-type---4
1/50
1/75
1/75
?'1/75
a/loo
1/150
1/150 ?
-.1/125 D]
1/20o
1/300
1/300 .
11/200
65-75%
not lpo_g
than L.0%
not les4
than 40%
not les5
than.40%
? os-14
ZhS-1$
0S-14
ZhS-18
0S-14
ZhS-19
0S-,14
Ks-3.4
ICS-14
EB-14
101-14
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For all variations:
Photograph size ______ 30 cm x 30 cm
No. of photographs 190 - 195
Size of film strip 32 cm x 6000 cm
Duration of cycle: i
at temperature of +3-50 C...,_not more than 2 sec,
+25?c
at temperature of more than 2.5 sec
Power consumption at
C- not
temperature
of +15?C to +25?C with
' electric heaters turned on
_
Power consumption at temperature
. Of -6o? with heaters on
Time intervals of command
instrumen+
Camera operating voltage
Camera operates under normal
conditions as well as with:
a vibrations at frequency
b. ambient air temperature
c relative humidity up to
from. +150C.to +25?C
d) altitudes above sea level
up to 13.5 a
up to 16 a
from 2 to 60 sec
26 v t10310
from 10 to 200 cps
from + 50?C to - 60oc
98% at temperatures
up to 12,000 m.
III. Description of the AFA-33M
The AFA-33M consists of the following basic elements:
1. Camera housing.
2. Objective lens section with lens and shutter.
3. Film holder. '
4. Command instrument.
5. Drive and blower unit.
6. Electrical wiring.
7. Cardan shaft.
8. Flexible hose.
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1. Camera Housing (Figures 4, 5, 6, 7,. 8, 9, 10, and 11)
The camera housing forms the intermediate connection between the
cone and the film holder. . CaMera housing.1 is a rectangular cast hous-
ing, the top part of which Is an attached frame .2 with four alignment
lugs. On two:sides.of the frame are lock plates 3 by means of which
the tam holder is. attachedto the camera housing. On the two opposite
sides of the frame are four gUide pins 21-which hold the film holder when
the latter is.placed on the camera housing. The camera drive mechanism
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.13, receptacle 12 for connection of the electrical wiring, and a jack
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with a lamp,holder.for illuminating the clock and level are mounted on ,
the right wall of the camera housing. On the left wall are a.nipple for
'connection of the flexible hose which supplies, air to the camera hous-
ing for the purpose of keeping the film flat, a jack for the clock, and
jacks with lamp holders which illuminate the clock and level.
On the front'andrearWalls are trunnions 11 which are used to .
attach the cameratothe camera' mount. On the rear wall of the camera
housing is, in addition to the trunnion,- a' hinged level 306 which is
used to place the focal Plane of the camera in a horizontal position;
the level has .0 minute 'graduations.
The objective lens section 14 is attached tightly to the lower base
of the camer housing.- .
A vide-angle lens is mounted onthe AFA-33/20M aerial camera. This
camera is not used with the AKAFU automatic oscillating mount. The' camera
part is indentical for all four cones.
The following recording elements are located at the corners of the
camera unit: clock 5.with a heater which is Controlled by a thermostat,
level 6, and counter 7.. The shaft of the counter extends through the ?
housing of the camera unit and is terminated by a handle 74, which is
used to set the counter at the zero position.
The level may be read with an accuracy of 6o minutes; the value of
each division is 60 minutes.
When the table is pressed', the recording units are illuminated by
electric lamps and: the level, clock and numbers of the counter may be
photographed through the recording lenses
The power transmitting mechanism of the camera, which consists of
shaft 26, bevel gears 24, 27, and 28; and contack disks 42; 43, and 288,
.receives motion from a drive agregate by means of a CardanShaft 15
(Figures 8, 9, and 10) which is connected to the sleeve of shaft 16 of
the drive mechanism. '
The drive mechanism consists of a worm gear 17 and 18, shaft 19,
bevel gears 20, 21, and 25, sleeve 22, and driving pin 23.
; Motion is transmitted through worm gear 17 and 18 to horizontal
0 shaft 19 and then through the first bevel gear 20 and 21 to the film
cassette (holder) by means of sleeve 22 and driving pin 23. Motion
is transmitted through the second bevel gear 24 and 25 to shaft 26,
located parallel to the side of the camera unit, and thence to the
shutter through the third bevel gear 27 and 28.
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Three contact disks 42, 43, and 288, connected to the other end of 50X1
aft 26, perform the following functions: contact disk 42 switches off
the camera MOtOr after eachcomplete revolution of horizontal shaft 26.
At the moment the motor is switched on, contact disk 42 begins to
turn with shaft 26 and, in turning, closes contacts 44 which remain
closed until the disk opens them. Contact disk 43, which closes con-
tacts 45, switches on the electric lamps of the recording instruments
for the period of the exposure. Contact disk 288, which closes contacts
289, sends 'a current pulse to the oscillating camera mount. The electric
motor of the mount is turned on and sets the mount and camera in motion.
The frame of the camera mount ceases its oscillations at the moment the
electrical circuit of the AKAR' switching devices is broken. The power
transmitting and drive mechanism of the camera unit, with the exception
of shaft 16, makes one revolution for each complete cycle of operation
of the camera.
The fourth bevel gear 35 and 36 transmits motion through inter-
mediate shaft 34 by means of spur gears 37, 38, 39, and 40 to shaft 41
of counter 7. The counter is.a hollow cylinder (see Figure 11) contain-
ing drums 55, 56, 57, and 61 mounted on a shaft (Figure ii)..
Drum 56 indicates units, drum 57 -- tens, and drum 61 ?.hundreds.
The surfaces of three of the drums have graduated numbers from 0 to 9
while the surface of drum 55 is smooth. In conjunction the three drums
can register a three-digit number.
Trip gears 62, 63, and 287 are mounted on a shaft beneath the drums.
Rotation of spur gear 40 turns drum 55, which sits freely on shaft 41,
and this transmits motion to the second drum 56 by means of auxiliary
trip gear 62. Drum 55 has two teeth. Drum 56 has 20 teeth on one side
and two teeth on the other. The teeth on the two other drums are
located in analogous positions. Each of the trip gears has 8 teeth --
four long and four short arranged alternately.
The counter operates as follows: when drum 55 turns one revolution
it engages a short tooth of trip gear 62 and turns the trip gear through
45?. Then the second tooth of drum 55 engages the next (long) tooth of
trip gear 62 and turns the trip gear through another 450, simultaneously j'
turning drum 56 by its two teeth, that is, 1/10 of a complete revolution, A
and registers the digit 1. After this the two teeth of the trip gear
are engaged with the teeth of drum 55. Consequently, the trip gear
becomes stationary as does drum 56, since its teeth are engaged with
those of the trip gear. When drum 55 turns one more revolution drum
56 turns through 1/10 of a revolution and registers another unit,
.
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When drum 56 turns through a complete revolution; the two teeth 0n50x1
its one end engage.trip.gear;63 and turn it 900. This movement is trans-
mitted to drill 57 which is turned by its two teeth,, that is, 1/10 of a
revolution, .and registers the first ten, etc.
Motion is transmitted in a similar manner. by trip ger 287 to drum
The trip gears rotate freely on shaft 72 which is attached by means
of two springs 73 to. housing 7 of the counter.
61 which registers hundreds.
In order to set all drums to zero it is necessary to pull out knob
74 and turn it until zeros appear on all drums.
Shaft 41 is prevented from turning by the projection of spring 75
which enters a slot in a sleeve attached to the shaft.
When the cogs of all the drums are resting in the slot in shaft 41,
the drums are set at zero.
2. Objective Lens Part AFA-33/20M
(Figures la, 4, 5, 8, and 19)
The objective part 14 of the damera is a cast metal section which
is attached tightly to the base of the camera unit by bolts.
Within the objective part are: a lens, an iris-type shutter with
heater, and the mechanism for transmitting motion from the power trans-
mitting section of the camera to the shutter.
Motion is transmitted to the shutter through a telescoping shaft
53 and gears 76, 77, and 78..
On the' front wall of the objective part are a knob 82 and indicat-
ing disk 81 which are, used to,change.the exposure times, and rheostat
364 (Figures 4 and 6). which is used to change the brightness of the
lamps for the recording instruments of the camera in accordance with
the sensitivity of the film.'
Motion' is transMitted fro?. the knob through telescoping shaft 91
to valve' 115 (Figure .14) which,sas it moves, creates more or less air
resistance in the cylinder of the pneumatic regulator and thus changes
the exposure of the shutter.
The turning motion of knob 82 (Figure 19) is transmitted through
a pair of idler gears 273 to a crown wheel and disk. Because of the
planetary transmission, the disk turns through a small angle when the
knob is turned through a wide angle.
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The disk is held at the desired exposure settings 'by means of'
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catch 274, consisting Of a' rod and spring, which, as the knob :is turned,
falls into'depression8..inthe crown wheel Which correspond to each set-
ting:
To avoid breaking the handle, the latter may be turned in one or
the other direction for only a certain number of revolutions before
coming to a stop position. These rotations are limited by means of a
special device which functions as follows: washer 275 is linked to
bevel gear 84 by means of pins. When knob 82 is turned one revolution
the lug on washer 275 engages the lug of the second washer which sits
freely on the shaft.
When the knob makes the second revolution the lug on the second
washer engages the lug of the third washer, which also sits freely on
the shaft, etc. As 'a result, the knob may be turned until the lug on
the last freely rotating washer contacts the lug of the ,washer which
is firmly attached to the sleeve of the shaft.
The bottom of the objective Dart is closed by a cover which pro-
tects the lens against dirt and dust during its transportation and when
it is attached to the camera in the aircraft before flight.
3. Objective Lens Part AFA-33/50M, 7514, 100M
(Figures 6, 7, 9, and 10) .
Objective lens part 14, type AFA-33/5014, 75M, 10014, represents a
cone-shaped cast metal unit which is bolted tightly to the lower part
of the camera unit.
The following elements are mounted in the objective part: lens,
louver-type shutter with electric heater, protective covers 50, and a
mechanism for transmitting motion from the power transmitting apparatus.
of the camera to the shutter.
Protective covers 50 '(Figures 9 and 10).cover the lens and protect
the film against exposure through the segments of the shUtter which do
not fit tightly against'each.other when the shutter is in the closed
position. The protective, cover assembly consists of the following main
parts: covers 50;. gears. 65 and 66 with shafts 67 and 68; springs 69 and
70; rack 64; disk 52 Withroller 51; and pin 60.
Motion is transmitted from the power transmitting mechanism of the
camera through telescoping shaft 53 to disk 52. When disk 52 turns,
roller 51, which sits on a semiaxis screwed to the disk, presses pin
60 and moves the rack to the left.
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The teeth on therack are engaged with those of spur gears 6' and 50X1
?which are permanently fixed to. axles 67 and 68.
/
lUhen the rack.movet. gears 65 and 66 turn' and open the protective
? covers.
The covers are closed and the rack moved backward by the action of
springs 69 and 70 on axles 67 and 68.
..The mechanism for?transMitting motion to the shutter consists of
telescoping shaft' 53 and!gears 54, 71, and 58.
On the housing of the objective lens part are attached a disk with
a:knob fort changing exposure times and a rheostat for changing the illu-
/ mination of the recording instruments of-the camera.
Motion is transmitted from knob 82 to the shaft of the exposure
mechanism through bevel gears 84 and 85, telescoping shaft 86, and
helical gears 87 and 88.
The bottom of the objective lens part is closed by a cover which
protects the lens against dirt.
4. Lenses of the AFA-33M (Figure 12)
Each variant of the AFA-33M aerial camera is equipped with the
appropriate lens mounted in the objective lens section of the camera.
The cuter surfaces of the lenses are coated with two layers of a chemical
clearing agent, while the outer surfaces of the first and last lenses
are coated with a single layer of clearing agent.
The "ORION-1A" lens. is mounted in the AFA-33/20M camera. The focal
distance. of the. lens is 200 mm. The relative aperture is 1:6.3.
Resolution of the lens:
, not les than 35 lines per mm at the center;
not less than 4 lines per mm at the edges.
The. lend is equipped with three light filters ZhS-18, 0S-14, and
XS-14 which may be placed on the bayonet mount on the lens unit. An
"INDUSTAR-52" lens comes with the AFA-33/50M camera. The focal dis-
tance of the lens is 500 mm: The relative aperture is 1:5: ?
Resolution of the lens:
not less than 25 lines per mm at the center;
not less than 12 lines per mm around the field.
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? 'The AFA-33/75Mcamera is equipped with a " a -2" lens.. The 50X1
focal distance of the les is 750 mm. It relative aperture is 1:6.3:
Resolution of the lens:
not less than 28 lines per mm at the center;
not less than 11 lines per mm around the field.
The AFA-33/100M camera is equipped with a "TE1SMAR-7" lens. The
focal distance of the lens is 1,000 mm. Its relative aperture is 1:7.
Resolution of the lens:
not less than 28 lines per mm at the center;
not less than 17 lines per mm around the field.
The following three light filters may be used with the "INDUSTAR-52",
"TELEMAR-2", the "TELEMAR-7" lenses: ZhS-18, 0S-14, and KS-14. The
lenses are attached to the bayonet mount Of the lens unit..
When using the light filters it is necessary to consider their filter
factor, that is,the value which shows to what extent the exposure time
must be changed in comparison with photographing without ,a filter.
(Filter factors are given in appendix NO 2, page 45)
5, Shutters of the ARA-33M
Iris-type Shutter APA-33/20M (Figures 13, 14, and 15)
The iris-type shutter with heater is placed in the objective lens
unit of the AFA-33M between the lenses and has shutter speeds of 1/50,
1/100, and 1/200 sec. The efficiency of the shutter is 65-75%.
The iris shutter mechanism consists of five basic parts:
1. operating mechanism;
2. drive; ' ?
3. external-internal contact ring gear with disks;
4. pneumatic regulator;
5. electric heater..
Operating
Operating mechanism,of the shutter.
? The operating mechanism of the iris shutter (Figure 14) imparts
rotating motion to ring gear 102 with disks 103 and consists of the
following basic parts: .
1. shaft 260; ,
2. starting drum 94 with two gear sectors 95 and 96;,
3. drum cover 97;
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?. 4. operating spring 98; 50X1
5. stop 99;
6.i/driving gear 100 with notches;
7. movable tooth 101.
?Starting drum 94 with the two gear sectors 95 and 96 are mounted on
ball bearings on shaft 260.
Gear sector 96 engages the teeth of drive sector 104, while sector
95 engages the teeth of rack 105 of the pneumatic regulator.
In the upper part of the starting drum is operating spring 98,
one end of which is connected to the drum and the other to the drum
cover 97. The cover is prevented from turning by stop 99,
On the lower part of the drum is driving gear 100 which engages the
teeth of ring gear 102.
Driving gear 100 has d.cylindrical ring with notches. A movable
tooth 101 provides contact.betWeen the drum and this cylindrical ring.
The tooth enters a slot of the ring at the moment the shutter is trig-
gered and transmits Motion from the drum through driving gear 100 to
the ring gear and disks.
? The drive (Figures 8, 14, and 15).
?
The drive serves to.cock.and trigger the shutter and receives
motion from the. power transmitting mechanism of the camera through a
Cardan shaft and spur. gears' 76, 77, and 78.
The drive consists of the following basic parts:
shaft 106;.
2, cam 107; .
3. gear sector 104;
4, oscillating.fork 108;
5. shaft 109.
Double ting gear with four disks.
(Figures 13, 14, and 15)
:The double, ring gear Consists of the folloing basic parts:
1. shutter housing;'
2. race;
3.. double ring gear 102;
4. four disks 103 with spur trip gears 112.
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S-E-C-R-E-T
No Foreign Dissem,
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. Race 111 with a groove in which the double ring gear rests is 50X1
attached to the shutter housing 110. Between the race and the ring gear
102 are brJ1/bearings.
Ring gear 102 has externaland internal contact.
The ring gear, which receives motion from external contact with
driving gear 100, transmits rotary motion to spur trip gears 112 with
disks 103, thus opening and closing the shutter.
Pneumatic regulator (Figures 13,.11i).
The pneumatic regulator is designed to change the exposure of the
camera within limits of 1/50 to 1/200 sec, as well as to protect the
mechanism from shock loads at the end of the triggering cycle.
The regulator consists of the following basic parts:
1. housing 113;
2. piston 114 With rod 105;
3.. valve a15;
4. adjUstment needle 116.
When the shutter is cocked the piston and rod are placed in their
initial position by gear sector 95 of starting drum 94. At the moment
the shutter is triggered sector 95 transmits motion to the rod and pis-
ton which move at a certain.speed dependingon'the amount of air pressure
in the cylinder created by the piston. The amount of pressure (air
"cushion") is cOntrolled by the valve. When the valve is closed the
air pressure is at A maximum and the piston moves slowly. When the
valve is open the piston moves at maximum speed. The speed of movement
of the piston controls the speed of rotation of ring gear 102 with disks
103, that is, controls the exposure time.
Adjustment needle 116 serves to adjust the mode of operation of
the regulator..
Electric heater 307 is used to heat the shutter mechanism parti-
cularly when operating the camera at temperatures down to -600c. The
heater is a ceramic block wound with a helical wire and is attached
to the cover of the shutter; the heater is turned on by means of a
thermostat located in the camera part when the temperature is from
3?C to 13?C and is turned off when the temperature is from +200c
to 30?C.
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S-E-C-R-E-T
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Operation of the. Iris Shutter Mechanism
?.(Figures 14 and 15) .
When cam 107 turns; its gear sector 104 engages the sector of the
starting drum 94. As the drum turns. it winds the operating spring of
* the shutter.
? At first the drum and 'the driving gear 100 turn together, since
tooth 101 is engaged in the notch of the cylindrical ring of the driv-
ing gear. During this time the shutter disks 'turn in a direction
oppsite to their normal travel, that is,the direction for opening the
shutter.
50X1
Once the starting drum has moved through an angle of 12?, fork
108, which is turned by the action of cam 107, enters the groove of the
driving gear and pushes movable tooth 101 from the groove, taking its
place; the driving gear stops turning, and the slots in the disks take ,
their initial position, corresponding to an angle of 2700 through which
the disks must pass before exposure.
After the driving gear and disks have stopped, the starting drum
continues to rotate, winding the operating spring. When the drum has
turned through an angle of 720 (from its starting position), the sector
of cam 104 disengages from the gear sector 96 of the drum and the lat-
ter stops turning. At this moment the movable tooth is forced by a
? spring into the next groove of the cylindrical ring of the driving
gear, thus connecting the driving gear with the drum.
Cam 107 continues to rotate and begins to push fork 108 from the
groove in the driving gear. Once the fork has withdrawn from the
groove, the winding spring causes the drum to rotate in the "unwind-
ing" direction.
As the drum turns so. also does. gear 100, transmitting motion to
double ring gear 102.which-causes the spur trip, gears and disks to
rotate.
As the disks rotate their slots approach the effective aperture
of the lens, open this aperture for a certain period of time, and then
close. The exposure is them made.
Louver Shutter for the ARA-33/50M, 75M, and 100M
The louver shutter with electric heater is installed in the AFA-
33/50M, 75M, and 100M cameras, between the lenses in the housing of
the objective lens unit, and has exposure times of 1/75, 1/150, and ,
1/300 sec, with the exception of the AFA-33/100M shutter which has
exposure times of 1/7501/125, and 1/200 sec. The efficiency of the
louver-type shutter is not less than 40%.
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iiarinccifipri in Part- Sanitized Copy Approved forRelease2013/11/18 : CIA-RDP80-00247A001300290001-4
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The. louver: shutter meChanism consists of four basic parts:. 50X1
1./frame with bars;.
2. winding mechanism;
3.. operating. mechanism;
4. 'electric heater:
Shutterfrate with bars (Figures 16, 17).
Frame 117 is a cast metal form in which are attached 9 bars for
the AFA-33/50M and 75M shutters and 11 bars for the AFA-33/100M shutter.
On one end of the bars (118) is a semiaxis, and on the other -- a
? semiaxis with spur gear teeth.
On the operating mechanism side of the frame is a rack 119 which
engages the teeth on the semiaxes of the bars. The rack has a lug 120
by which it is connected to a fork of the rocker lever of the shutter
operating mechanism.
Winding mechanism (Figures 17, 18).
The shutter winding mechanism consists of: eccentric 121, jump-
ing cam 122, ratchet wheel 123, and winding gear 58, which are connected'
to each other and rotate on a common axis 59.
? The winding mechanism serves to wind and trigger the shutter operat-
ing mechanism. .
Operating mechanism (Figures 17, 18).
The shutter operating mechanism consists of the following parts:
1. Screw 124, having single-cut right and left hsrd threads
on each end) on which are screwed , spring-holding sleeves 125.
2. Two slide blocks 126 with rollers 127.
3. Two ,springs 128.
4. Two springs 130.
5. Two small cups 129.
6. Rocker lever 131.
7. Two pneumatic buffers 132.
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? The operating mechanism operates the bars of the shutter and per- 50X1
mits changing exposure times with the aid of springs 128 and 130.
Springs 130 provide an exposure of 1/75 sec, while springs 128
provide the remaining exposure times.
The operating mechanism is designed so that the right andaeft
springs 128 and 130 function alternately during operation of the mechan-
ism.
Electric heater 307 (Figure 16) is designed to heat the shutter
mechanism, partidularly nring operation of the camera at temperatures
down to -60?C. The heater is a ceramic block wound with wire and
attached to the cover of the shutter housing.
? Interaction of Parts and Operation of the Mechanism
(Figures 17 and 18)
Motion is transmitted from the power transmitting mechanism of
the camera through the Cardan shaft and gears 54 and 71 (Figures 9, 10)
to winding gear 58. Eccentric 121, jumping cam 122, and ratchet wheel
123 turn with the winding gear. As the winding gear turns, eccentric
121 moves either the right or left slide block 126 along screw 124,
compressing the operating. springs of the shutter.
When the eccentric moves the right slide block and compresses
the right spring, the left spring is kept in a cocked position since
the left slide block is held by the edge of rocking lever 131 and rol-
ler:127, and the rocking lever is in turn held by the projection of
upper lever 133.
With further movement of eccentricl211 when the smaller radius
of the eccentric is adjacent to the roller of the left slide block,
cam 122 releases upper lever 133 to the side. The projection on lever
133 frees rocking lever 131, and the latter turns on axis 134 due to
the force of spring 128. The fork on lever 131, since it is engaged
with rack 119, moves the rack along guide pins, and the .atter' turns
the bars 1800, that is, trips the shutter.
The shutter triggers when gear 58 and eccentric 121 turn a half
revolution in a counter-clockwise direction. Further rotation of gear
58 and eccentric 121 cause the shutter to be triggered by the right
spring.
'
Ratchet wheel 123:and pawl 135 prevent gear 58 and eccentric 121
from.turnirig.in the A6001.to dirAtetiOft.
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A shock absorbing action occurs at the end of the travel of rock-L:;
ing lever 131 when.the shutter trips. This action, which reduces shock50X1
when the shuter bars close, is provided by pneumatic buffers 132 whose
rods contact projection 136 of the rocking lever as the latter moves.
To prevent backward movement of_the rocking lever and, conse-
quently, of the shutter bars, the shutter has a device (Figure 17)
which provides overlapping of the projection on rocking lever 131 and ,
the projection on upper lever, 133.
This device operates as follows: when the right spring triggers
the shutter, rocking lever 131 strikes agains the rod of the pneumatic.
regulator while eccentric. 121 at this time turns so that plate 137
butts against projection 138. Plate 137 is attached permanently to
eccentric 121 (Figure 18).
Continuing to rotate, plate 137 pushes against projection 138
and turns the rocking lever so that the projection on upper lever 133
catches projection 139 of the rocking lever andirevents the latter from
moving backward.
When the left spring triggers the shutter, projection 139 engages
that of upper lever 133 as a result of the pressure exerted loy lever
141, which ison-the axis of eccentric 121, on peg 140, which is attached
to rocking lever 131. ?
Exposure time. may .be changed by changing.the tension of the springs,
which is done with the aid of the two sleeves 129 and screw 124.
Screw 124 is, turned by.means?of the exposure setting knob which
operates through a telescoping shift and spiral gears 87 and .88; the
sleeves move along the threads of the screw and change the tension of
the springs. ?
6. Film Holder
(Figures 20, 20a, 21, 22, 23,.24, and 25)
The film holder is designed for advancing, measuring off, and
aligning the film and for protecting it against unwanted exposure.
The film holder can hold up to 60 meters of perforated film with
a width of 32 centimeters.
Useful frame size is 30 x 30 cm with a spacing between frames
of 10 to 25 m.
The film holder consists of the following basic parts:
1. housing;
2. operating mechanism. _14_
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4:L
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
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The housing serves to protect the film against accidental or, 50X1
unwanted ?exposure. and Consists of the following components:*
/
1.? :frame 142;
. 2. two spoOls 143;. .
3. ?cover 144.
0
A film counter 248 and a celluloid plate 298 for recording are
mounted on the cover of the housing.
The cover is attached to the hOusing of the film holder by four
hinged catches located in pairs on opposite sides. The catches are
locked with a key to prevent accidental opening of the film holder dur-
ing operation.
The film drive, signalling device, and two catches 249 are
mounted on the right side. On the left side are the movable semiaxes
on which the spools are placed and two catches.
A slide plate is mounted at the bottom in grooves of the frame;
the function of the plate is to protect the film against accidental
exposure through the window of the frame during removal of the film
holder.
The film holder mechanism (see Figures 20 and 21) is mounted
within the housing and consists of the following basic parts:
1. film drive;
2. film metering mechanism;
3. film smoothing mechanism;
4. disengaging mechanism;
5. friction clutch;
6. film counter;
7. film winding signal device.
The film drive (Figure 20) serves to transmit motion from the
drive mechanism of the camera to the film holder and consists of a
drive head 201 attached to a shaft and a pair of bevel gears 202 and
203.
The film metering mechanism transmits notion from the. drive to
metering shaft 215 and'serves to advance a constant amount' of film
equal to the length of a frame plus the interval between frames.
The film metering mechanism consists of two spool cams 204, spur
gears 216, 217, 218, and 219, and. metering shaft 215.
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
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The, metering shaft 215 may be disconnected from the overall
kinematic arrangement of:the film holder by means of a special.dis-
. engaging deviCe (see Figure 20) which. consists of an end coupling
-240, -spring 245, lever 241, and lock 242.
The shaft is-diSengaged to facilitate loading the spool with the
The' metering shaft may thenbe turned freely. The. disengaging
device operates as follows: when lever 241 is. pressed, the end coupl-
ing is. disengaged 'and the 'shaft is freed.
. The end coupling is engaged aUtomatically by means of hook 21.14.
when the cover of the film holder is closed. Hook 244,, which is
attached to the cover, presses on lock 242 and frees the lever, after
which both halVes of the end coupling are connected by means of spring
245, engaging the metering shaft.
The smoothing mechanism consists of:
1. central shaft 206 with eccentric 231;
2. press plate 222;
3. roller 232 with its support;
4. two springs 233 and 234;
5: bushing 235.
50X1
The disengaging mechanism serves to disengage the film holder
mechanism from the drive mechanism of the camera when the slide plate
is open for the purpose of preventing damage to the drive mechanism.
The disengaging mechanism consists of:
1. roller 208;
2. lever 209;
3. stop rod 210;
4. fork 211 on shaft 212;
5. end coupling 213;
6. spring 214. ?
The friction clutch (see Figure 23) is designed to turn the take-
.up spool when the diameter of the latter changes as filmiswoundonthe spool,
and also provides the necessary tension during winding.
The main parts of the friction clutch are:
1. housing 191;
2. gear 192;
3. shaft 193;
14. nut 194; :
5. flange 195;
6. spring 196;
7. gasket 197.
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ci
The friction clutch is designed as follows: housing 191 contain-
ing felt gasket 197 is placed on shaft 193. Gear 192 with an insert 50X1
for spring 156 is attached to the bushing of the housing. There are
pins in the end of the gear. On the bushing of gear 192 is a flange 195
which is connected to the pins. Spring 196 forces flange 195 against
felt gasket 197 and thus provides the necessary friction between the
housing and flange 195.
As a result of the gradual increase in diameter of the winding
spool, advance of the film without the friction clutch would cause a
gradual increase in the amount of film wound on the spool in one cycle,
which, as a result of the presence of the film metering mechanism,
would cause the film to break or would damage the mechanism.
The friction clutch permits turing of the take-up spool Whose
flange is connected to the driving pins of housing 191. At the same
time, the film is advanced as a result of the turning forces of the
take-up spool.
The combined friction clutch of the film supply spool 225 consists
of two friction clutches: an internal constant-action friction clutch,
and an upper periodic-action friction clutch. This combined clutch
provides normal operation when the film is advanced (avoids loops in
the film).
-
The main parts of the brake are:
1. housing 350;
2. bushing with pin 351;
3. spring 352;
4. check bushing 353;
5. gasket 354;
6. ratchet wheel 355;
7. gasket 356;
8. nut 357;
9. stop 358.
Combined frictionsclutCh 225 is constructed as follows:
Within housing 350 is felt gasket 354. Over bushing with
pin 351 is placed check bushing 353 which is forced by spring 352
against felt gasket 354, thus providing the required friction
between housing 350 and check bushing 353.
Ratchet wheel 355 is placed around the outside of housing 350
and is held between two felt gaskets 356 which are squeezed together
by nut 357 aad subsequently, arrested by stop 358; the gaskets provide
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the required friction between housing 350 and ratchet wheel 355. The
upper friction clutch is placed in operation by a pawl at the end of
the film advance cycle.
The film counter (Vigure 24) indicates the amount (in meters) of
unexposed film remaining on the film supply spool.
The counter mechanism consists of the following basic parts:
1. counter housing with dial 148;
2, lever with roller 147;
3. gear sector 146;
4. shaft with spring 149;
5. shaft with gear teeth 150;
6. pointer 190.
The counter operates as follows: when the cover of the film
holder is closed, the roller on lever 147 rests on the surface of the
tilmonthe film supply spool.
As the diameter of the roll of film decreases, the roller on the
lever arm drops and motion is transmitted through gear sector 146 to
shaft 150 to which pointer 190 is attached. The pointer indicates on
the seal,- the amount of film remaining on the spool; the scale is .
located onthe bottom of the housing.
The film advance signal device indicates normal operation of the
camera and advance of the film. It is a combined mechanical and
electrical device and is mounted on the semiaxis a? the film spool.
The electrical indicator is a disk 237 with lugs which open and close
contact plates 238 as the semiaxis rotates, transmitting a current
pulse to a light on the command instrument. The electrical circuit
of the contact plates on the film holder is connected with that of
the camera by means of contact block 239. The electrical device is
covered by a housing 311; on the outside end attached to the semiaxis
is the mechanical signal device, which is a black and white disk.
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50X1
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Interaction of Parts and the Film Holder Mechanism
(Figures 20, 23, and 25)
The operating cycle of the film holder begins with advancement
of the film (second half ofthe frame). At this moment the table of
the film holder is completely raised and makes it possible to open and
close the slide plate'without hinderance.
With the slide' paate closed, the film holder mechanism is
disconnected from drive head 201 and, consequently, advancement of
the film and :lowering of the table are impossible at thiS time. The
mechanism is actuated. only when the slide plate is open. '
When the slide plate is open extension 207 lifts roller 208, which
sits on lever 209, and the lever, as it turns around its own axis,
disengages gear sector 210 from gear 205. Simultaneously with the
lowering of gear sector 210, lever 209 frees fork 211 which turns
around axis 212 and is connected to end coupling 213.
Due to the action of spring 214, the end .coupling is lowered and
its teeth enter the corresponding depressions in the drive head.
Drive head 201, bevel gears 202 and 203, the cams of gear 204,
and the central shaft 206 of the film holder make one revolution for
each complete operating cycle of the film holder.
50X1
As soon as drive head 201 begins to turn, the motion is trans-
mitted through bevel gears 202, 203 and cam 204 to gear 205 and then
through spur gears 216, 217, 218, and 219 to metering roller 215.
The metering roller begins to advance the film which moves from
the supply spool 220 over guide roller 221, under table 222, and then
between pressing roller 223 and metering roller 215 to take-up spool 224.
At the beginning of the film advance, only the internal part of
combined friction clutch 225 of the supply spool operates. At the end
of the film advance cycle the upper friction unit is engaged in the
.following manner: eccentric 359, which sits with the cam gear on
shaft 206, turns the roller on pawl 360. Pawl 360 is attached to shaft
361.
Eccentric 359 turns, with shaft 206 and presses on the roller of
pawl 360, dropping.thepawl into ratchet wheel 355 through the tension
applied by Spring 362-and thus engaging the upper part of friction
clutch 225, .The latter provides for normal operation of the film
.advance mechanism by.preventing the formation of loops.
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After a certain length of film (the second half of a frame) has,
been advanced, can 204 disengages from gear 205. The gear stops
turning and /film advance ceases, but central shaft 206 continues to
turn with eccentric 231. The eccentric begins to press on roller
232 and transmits this motion through spring 233 to the table. The
table begins to drop and, at the end-of its movement, presses the
film against the detachable frame of the camera unity at the same
time creating a pressure within the camera as a result of the
continuous delivery of air by the blower.
The air pressure in the camera presses the film against the table
and levels it, while the air remaining between the table and the film
escapes through the'gasket and grooves in the table into the film
holder and thence to the outside.
After exposure of the film, rotation of the eccentric permits
the table to return to its original position as a result of the
action of return spring 234.
When the table has been raised to a certain height, cam 204
again engages gear 205 and the film again begins to advance (the first
half of a frame).
Shaft 206 turns eccentric 359, the roller on pawl 360 hits the
projection on eccentric 359, and the pawl is shifted to the upper
position, disengaging from ratchet wheel 355.
At this moment the internal friction part of combined friction
clutch 225 begins to function.
? When the table has been raised to its maximum position, the film
holder mechanism and the camera mechanism cease operating and the
operating cycle of the film holder terminates.
With the table in this.position it is possible to close the slide
plate, wherein pointer 243 must be placed opposite the inscription .
'"Svobodno" [Free]. This corresponds to the maximum raised position
of the table. .
? When pointer 243 is placed opposite the inscription "Shiber ne
zakryvat!" [Do not close 'slide plate], then it is forbidden t6 close
the slide plate since the table of the film holder is down:'
(!) The pointer may be seen through the top and side windows of the
.disengaging mechanism,
S-E-C-R-E-T
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The supply spool is held in the film holder on Semiaxes. These 50X1,
are formed by a projection on combined friction clutch 225 with drive
pin 226, artd a rotating semiaxis with a safety catch.
The semiaxes of the take-up spool are formed by a projection on
? friction clutch 229 with drive pins 226, and rotating semiaxis 227
? With safety catch 228. The catches protect the semiaxes against
arbitrary shifting and prevent the spools from coming off the axes
during operation of the canera.
?
7. 'Command Instrument KPU2
(Figures 26, 27, 28, and 29)
The command instrument (KPU2 Universal'CoMmand'Instrument) is
designed for remote control of the camera and the oscillating camera
Mount. It provides 1' Or:
a) automatically delaying the time interval between photographs
within limits from 2 to 60 sec;
b) taking individual photographs;
c) automatic photographic observation of bombing results. Once
the ESBR [electric release] button has been pressed, the camera
begins operating within 5 to 15 sec before explosion of the bomb and
?automatically switches off after 25 sec of continuous operation;
d) monitoring the operation of the camera according to the flash-
ing of a signal lamp;
?
e) switching the aerial camera to continuous operation;
f) determining the number of photographs, takn;
g) switching on 'and off the electric heaters the KPU;
h) switching on the AKAFU-33 when operating the aerial
camera.
The command instrument has the shape of a square box within which
are mounted the KPU:nechanisms. All contrbl elements ana signal devices
are accessible on the 'front panel.
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In the center of the panel is setting dial 151. A scale with 50X1
White numbep is inscribed around the circumference of the dial.
Graduations of the :scale correspohd to the time interval, between -
photographs in seconds. ? To set the desired time interval, white
index 152 is placed opposite the appropriate number on the white scale.
In addition to the white index on cover 153 is a yellow index 154
("T-bombs"). When the AFA-33M is used for the purpose of observing
the results of bombings, it is necessary to align yellow index 154 and
setting dial 151 so that one of the numbers or graduations on the
dial corresponds to the calculated drop time of the bomb (this time
is determined from ballistics tables). For non-automatic operation
(using the "Odinochnyy snimok" [single photograph] button), white
index 152 should be placed opposite the graduation with the sign "30".
Beneath the setting dial are three buttons: in the middle is
starting button 156, used to start operation of the instrument,
button 157 on the right is used to switch off the instrument, and
button 158 on the left is used to take single photographs.
There are two groups of switches located to the left and right ce
the buttons. Switch 159 is used to set the command instrument in the
bombing observation mode of operation ("Kontrol' bombometaniya"
[bombing observation]) or for photographing with time intervals
("Interval"). .Switch 160 is' switched on only if the-camera is to be
operated in the continuous mode, that is, with the interval between
photographs equal to the duration of the operating cycle of the camera,
wherein the floc" sign on dial 151 is aligned with the white index.
Switch 162 is used to switch on and off the electric heaters of the
command instrument.
When switch 161 is in the up position (inscription "AEAFU"),
oscillating camera mount AKAFU-33 is in the operating mode corresponding
to 2 or 3-strip photography. If the switch is in the down position,
the oscillating camera mount will operate in the single-strip mode and
the oscillating frame will be automatically set in the middle position.
(The above cases ?are applicable when the AFA-33M camera is used with
the AKAYU-33 camera mount).
the top of .fthe command instrument are three signal lights:.
. Light 163 is.on.when the instrument is under current, that, is, after
? starting button.156:has been pressed, or when dial 151 is set at "oo".
When button 157. is pressed light 163 should go out if dial 151 is not
set at "oo".
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Light 164 burns periodically during operation with the AKAFU-33
oscillating camera mount. The light should be out when using single-
.strip photography. ?
. Light 165 "flashes" during advance.of the film. In addition,
when switch 159 is in the "Kontrol' hombometaniya" position the
.burning of light 165 shows that the command instrument mechanism has
occupied the initial, position and is ready for photographic observatioa
of bombing.: Light 165 goes out when the ESBR button is pressed. Then,
within 10 sec before .explosion of the bomb the light should begin to
"flash", signalling normal-operation of the camera during the period
of operation of the camera (approximately 25 sec). The light. is then
extinguished and goes on when the mechanism again reaches its initial
position.. Until this time it is useless to press the ESBR button
since the instrument will not carry out photographic observation in
this case.
0
To the right Under protective cover 346 is frame counter window
166 which covers a numbered drum.. The value of each division on the
drum is 5 frames, and the counter is. capable of registering up to
400' frames:
The drum is set at the zero position by turning disk 167 in the
direction shown by the arrow. A replaceable "BP-20" safety fuse is
located under cover 168.
The electrical, cable for the KPU is connected to receptacle 169.
Next to this is a two-pin receptacle 170. This receptacle serves for
'connection of the two-wire electrical cable of the ESBR through which
a Current pulse 'is sent from the ESBR button.
.The command instrument is held down in the aircraft by means of
dovetail fitting 171. The dovetail receptacle and catch lever are
screwed to base 172. When this receptacle is slid into the dovetail
fitting, the tooth of catch 173 engages that of the lever and thus
protects the command instrument against slipping off the mount. In
.order to remove the command instrument it is necessary to press the
protruding part of the' lever and lift up. .
Cover 153 together, with the sides, which form a single unit, may
be tilted back on hinges after?removing three. screws 186 (which secure
the setting dial 151)' and loosening the two catches 187 which join
. cover 153 with base 172,
The. IU mechanism consists of the following basic units:
1. 'Drive mechanism..*.
2. Central mechanism. .
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? 3. Frame counter 188.
4. Ele/ctric heater 189.
5. Rectifier 198.
50X1
The drive mechanism serves to turn the ratchet wheel of the central
mechanism at a cOnstant number of revolutions per minute.
The drive mechanism consists of:.
a) electric motor MU-010 (199);
b) two pairs of. worm gears 200, 252, 253, 257;
c) Speed governor 259.
The time mechanism of the KPU is actuated by the special MU-010
electric motor.
This is a small separately-excited device with a constant
magnetic field. The direction of rotation of the shaft in this type
of motor depends on polarity.
Electric motor MU-010-operates from direct current at a voltage
of 26 v.? 10% and a speed of 8700 rpm at a load of 4o gcm.
Figure 28 shows.a cut-away .view of the motor, where 276 is the
motor housing, 277 are. the poles, 278 is the permanent magnet) 279 is
the armature, 280 is the commutator (end), 281 are the. brushes; 282 is
the front plate with ball bearings, and 283 is a brush spring.
The constant speed of electric motor 199 is maintained by a special
governor 259. If the speed of the motor increases beyond the permissible
value due to the effect of increasing centrifugal force, contacts K3
(Figure 36) of governor 259 separate. Then the armature current will
pass through resistor R1 (Figure 36) rather than directly to the
armature. As a result, the voltage across the armature drops and the
speed of the motor begins to decrease until contacts K3 close once
again due to the effect of spring tension. The resistor is then
shunted and current flows directly to the armature whose speed begins
to increase once more.
In thiS manner the motor is maintained at a constant speed equal
to 7500.rpmt5%.
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Worm gear 200 is connected to the output end of the shaft. Motior_50X1
is transmited from this worm gear to gear 252 and worm gear 253. The
latter turns the drive gear of the central mechanism.
The main function of the central mechanism is to close starting
contact K1 (Figure 36) at predetermined time intervals and to switch
on the AFA-33M camera when observing bombing results.
The central mechanism is located on base 172 of KPU and consists of:
a) the central mechanism proper;
b) electromagnet 284 of the electric boMb release;
c) setting dial 151.
Gear 257 sits freely on shaft 285. Plastic cant washer 286 (the
bombing control cam) is friction mounted on the body of gear 257 and
is rigidly connected to ring 299. On this ring is a depression "a."
A ratchet wheel is screwed to gear 257. Cam washer 286 is thus located
between washer 300 and ratchet wheel 301. Washer 300 is continually
subjected to the action of three springs 302 recessed in the body of
gear 257 and, consequently, continually presses cam washer 236 against
ratchet wheel 301. Washer 300 is connected to gear 257 by guide pin 303.
Above ratchet wheel 301 is a hinged lever 304. The lever is not
rigidly connected to gear 257 but is capable of turning relative to
the gear and ratchet Wheel 301.
At the end of hinged lever 304 is pawl. 305 which, during the
operation of the mechanism, periodically engages the teeth of ratchet
wheel 301. The pail is held against the ratchet wheel by spring 312.
The pawl is controlled by means of a system consisting of auxiliary
lever 313 with pin 314 and catch 315, which is held against.the
projection on auxiliary lever 313 by spring 316. Auxiliary lever 313
turns on axis 317, while catch 315 turns on axis 318.
.In addition, a textolite strip 319 is attached to hinged lever
304 by screws and:post 320 is attached to the lever by upsetting. The
end of spring 321, which attempts to turn lever 304 counterclockwise
against fixed support'322, is attached.to the post.
Above hinged bracket 3011.. is bracket 323 with two pairs of contacts
Ki and K2.. Contacts-Kl are closed by textolite strip 319, and contacts
K2 are closed by. cam washer. 286.
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Bracket 323 is rigidly attached to setting disk 151. Consequentl
when the dip is turned contact Ki will move either toward or away from
support 322 depending on the direction of rotation of the disk. The
position of contact 1(2 with respect to the projection on cam washer
286 will change in exactly the same manner. The cam washer is fixed in.
a certain position by: arm 324 whose tooth sits in the depression of
ring 299 due to the tension of spring 325.
When a current. pulse Is applied to the ESBR.electromagnet 284
(when a bomb is released), the magnet pulls armature 326 into the
core and arm. 324 turns around axis 327. The tooth on arm 324 withdraws
from depression "a".
On armature 326.is a plastic pin 328 which, in its initial
position, that is, when arm 324 is holding cam washer 286, closes
contacts 1(4. -dhen the armature is attracted into the core or when the
tooth of arm 324 is not in depression "a", contacts K4 are open.
Contact 1(5, consisting of three contact leaves, is attached to
base 172. In the free state the middle leaf makes contact with the
upper leaf.
When dial 151 is set on the "Toe position the projection on
bracket 323 presses against the middle contact leaf. This disturbs
the contact between the upper and middle leaves and the latter makes
contact with the lower contact leaf.
Frame counter 188 is mounted on cover 153 and serves to indicate
the number of photographs which have been taken. Its mechanism
operates from current pulses sent from the camera unit. One pulse is
applied to the mechanism for each cycle of operation of the camera.
The. counter consists of:
1). Electromagnet, 329.-
2) Ratchet wheel 330,
3) Counter trip gear 331 and gear 332.
4). Numbered drum-333,
5) Disk 167.
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?
Current is applied to the winding of electromagnet 329. Armature50X1
334 is pulled into core 335, which is hinge-connected to armature 334,
and pawl 33( turns one tooth of ratchet wheel 330. Trip gear 331 turns
together with the ratchet wheel. The trip gear transmits motion
through gear 332 to numbered drum 333.
Each of the divisions on the cylindrical part oethe drum corresponds
to five frames.. Readings. are made opposite an index mark made on the
protective glass.cover.*. As the current pulse is removed, spring 338
pulls armature 3311. out of core 335 and pawl 336 moves to the next tooth
on ratchet wheel 330.," The latter is prevented from turning in the.
opposite direction by check pawl 339. The numbered drum is 'set on the
zero position by means of disk 167.
The command.instrument.contains, in addition to the above
mentioned parts, electric heater 189; rectifier 198, and an electrolytic
capacitor.
' The electric ,heater is used to heat the ITU mechanisms and the
electric motor. in.lw.temperature conditions (down. to -600 C).
Electric heater. 189 is attached to the lower wall of cover 153 in
KPU. With the cover placed on base 172, the heater is adjacent to the
electric motor.
The electric heater represents. a ceramic core wound with nichrome
wire. The core is attached to the wall of the instrument by means of
a bracket.
Rectifier.198, attached to the side wall of the cover next' to
the counter, se yes to prevent current from going to the dynamic braking
relay during photographic observation of bombing results. This may
occur when the signal contact K7 in the film holder is left in the
closed position and switch P1 is in the "Kontrol' bombothetaniya"
(bombing observation] position.
The rectifier passes current going from signal contacts 1(7 to the
film advance signal light in KPU but does not pass return current
going through Pl, 1(4 from KPU.
Basically the rectifier consists of two metal disks 340 with
layers of selenium 341 applied to them, two spring washers 342, and
two leads 343. The spring washers press against the selenium layer. A
boundary layer is formed between the selenium and the disk to which it
is applied which has the property of passing current in only one direction.
The choke and capacitor are intended to reduce the level of radio
noise.
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8. The Drive and Air Pressure Units
(Figures 31 and 32)
The drive and air pressure units, mounted in common housing 29,
serve to actuate all mechanisms of the aerial camera and to supply
air to the.camera for the purpose of levelling the film.
Mounted in the two cups screwed onto either side of the assembly
are two type MA-40A electric motors which are of the open type and
operate from direct current with compound exciatation and natural
cooling. The MA-40A electric motors operate in two modes with rating
data given in the following table:
Name
Operating mode No 1 Operating mode No
for cera _drive for blower
Voltage ? 26 volts 26 volts
Useful power 40 watts 20 watts
Speed of rotation 9500 rpm 1:10% 10,000 rpm +20%
-10%
Current 3.5 amps 2.6 amps
Duration of operation 15 min 3.5 hours
The operating mode of electric motor 8 is short-term, while that
of electric motor 30 is long-term -- up to 3.5 hours. Electric motor
8 serves as the drive for all mechanisms of the camera, while electric
motor 30 turns fan 31 (blower), which forces air through a flexible
hose to the camera unit for the purpose of levelling the film.
Motion. is transmitted to the camera from electric motor 8 through
a reduction gear system 32 consisting of one pair of worm gears 46,
47 and two spur gears 48 and 49.
The gear ratio of the reduction gear system is 30.
In order to protect the camera against damage in the event of
jamming or other malfunctions during operation, the reduction gearing
contains a friction gear which operates as follows:
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Gear 48 sits freely on worm gear shaft 174. End coupling.177 i550X1
attached to.,key 176, on this same shaft. The coupling has teeth in
one end whih engage the same type of teeth in gear 48. Coupling 177
is held against the gear by .the force of spring 175; consequently,
motion is transmitted. frot Worm gear 47 through coupling 177 to gear 48.
In the event of seizing or other malfunction, when a torque of
22.5 to 24 kg/cm is created on the output shaft of the reduction
gearing, clutch 177 disengages from-gear 48 and slides, whereby motion
ceases to be transmitted to gear 48 and the camera.
. The friction clutch is lubricated with lTsKP lubricant for the. .
purpose of creating 22..5 - 24 kg.cm'steady torque at the output of the.
reduction gearing.
Nut 17L''; is used.to adjust the tensionof spring 175. The output
shaft of the reduction gearing terminates in a fitting to which
Cardan shaft 15 is connected to transmit notion to the film holder
mechanism (Figures 8, 9, and 10).
? Electric motor is actuated by a current pulse from the command .
instrument after each set time interval and operates for no longer
than 2 sec, making a complete cycle of operation. During operation
of the camerathe motor receives current through a .pair of contacts
which are closed by contact cam 42. The blower motor is switched on
simultaneously with the power switch of the command instrument and
operates continuously during the photographing period.
9. The Electrical Cables
(Figures 30, 30a, 33, and 33a)
All parts of the AFA-33M camera, the command instrument, and
the drive and air pressure. units are connected to each other by elec-
trical cables. In addition, a special cable connects the command
instrument with the ESBR button..
The AFA-33M set includes two cables and a jumper cable for
connection to the AEAFU,-33 mount.
The first cable'Consists,of two parts connected to each other by
.plug 180 and socket 181,
;
The first part of cable 179 has a common disconnect-type plug 180
by means of which it is connected to the socket of the intermediate
cable installed in the aircraft or to socket 181 of the second part of
cable. 182.
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At the end of one branch is plug 183 which is used for connecting
the drive and blower unit.
At the end of the second branch is plug 184 for connection to the
camera, and at the end of the third branch is plug 347 with a cap which
is used for connection to AKAFU-33 through the jumper cable.
The second part of cable 182 has plug 185 which connects to the
command instrument.
On the end, of one branch of the cable is. disconnect-type socket
181 which-May be used to connect to plug 250 of the aircraft's inter-
mediate 'electrical cable or to plug 180 of the first part of the cable.
On .the end of the 'second branch is two-lain plug 251 for connection to
the power supply. receptacle.
The intermediate electrical cable is not included in the set. It
is supplied by the aircraft parts manufacturing plant.
'The second electrical cable (ESBR .cable) 344 (Figure 30) serves
to connect the command instrument to the electrical bomb release
button. ?
One end of the cable has a two-pole plug 345 which connects to
the two-pole socket on the command instrument, and the other end is
terminated by a two-pin plug 363 which connects to the boMb release
button.
The jumper cable serves 'for connecting the AKAFU-33 camera mount
with a branch of the AFAr33M cable.
It has a four-pole .socket 348 which connects to plug 347.
The other end of this cable has a four-hole socket 349 (special)
which connects to the?drive'of AKAFU-33.
? S-E-C-R-E-T ?
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0
10. CARDAN SHAFT
(fig 8, 9, 10)
The, cardan shaft transmits driving power from the reduction gear of
the drive mechanism to the camera actuating mechanism through a bayonet
connection.
50X1
. The cardan shaft can transmit the driving power even at parallel dis-
placement of the output shafts.of the reduction gear relative to the camera,'
.actuating mechanism; it .also will transmit powerif the distances between
:such shafts is .varied within the limit up to 60 mm.
11. FLEXIBLE HOSE
(fig 1, 2, 3)
The flexible hose consists of a rubber tube with nipples on its ends.
The flexible hose provides passage for air from the blower to the camera,
and is connected to the blower and to the camera nipple by a bayonet coupl-
ing
12. CAMERA MOUNTING
The camera mounting is intended to support firmly the camera on the
aircraft and to reduce.Vibrations caused by the engine propellers; these
vibrations affect adversely the sharpness of photographs.
.
This camera mounting is manufactured in.three variants:. for camera
AFA-33/20M, for camera AFA33/50M, 75M and for camera AFA-33/100A.
A.. Camera Mounting for AFA-33/20 M
(fig 34)
This camera mounting consists of frame 261 with studs 262 and two
cross-bars. . .
The camera mounting is fastened to the aircraft by bolts.
On the side of the frame is a small platform for mounting of the
drive mechanism. The cross-bars 263 are mounted on the frame studs. In
the middle part of both ?croSs-bars.are supporting recesses for the camera
trunnions. .0ver these recesses are mounted swing clamps 264, and locks
265 to hold the clamps in place'.
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? ? At the ends. of .the crass-bars are placed adjusting screws .266. On t150X1 '
adjusting screws, from below,. are mounted shock-absorbing springs 267.
These. springs are 1.1 and,1.6 mm thick and are placed inisde each sleeve
of the. camera Mbunting.
Sleeves 268 are placed over studs 262 and fastened by clamp rings 269
.
To avoid possible breakage of the. spring during landing or take-off
the aircraft, a.felt shook-absorber is placed at the bottom of each
Sleeve.
On the adjusting screws 266 are placed knobs 270 which permit to
bring the aerial camera into vertical position.
- ? On one of the cross-bars is placed a wing screw 271 which serves to
fasten the. camera trunnion to the hook. .
Such a fastening is essential to prevent camera rotation on its trun-
nions during the flight.- Felt. shock absorbers are placed under the mount-
-lag frame to further reduce the camera vibrations.
. B. Camera:Mounting for AFA-33/50M, AFA-33/75M
And AFA-33/100M (fig 35)
Shock-absorbing arrangement of the camera mounting for AFA-33/50M
and AFA-33/75M.isssimilarto that for AFA-33/20M.
The difference in construction of.camera mounting for AFA-33/50M
and AFA-33/75M,? as.dompared to camera mounting for AFA-33/20M, consists
in that instead of studa and base there are provided special components
for mounting the camera.
Such a special mounting consist of two separate plates on which are
welded sleeves' with external thread.
On the ends of each, of these plates are two holes for the bolts with
which the plates are fastened to welded brackets.
" The braokets have three pairs of holes for fastening with the bolts
to the plates. By fastening the plate ends with the aid of bolts passing
through any one of the mentiOned-pair of holes,-it is possible to secure
three different positions between the planes of the brackets mounted on
the longerOns.
Either maximum, medium or minimum positions may be. selected depend-
ing on the model. of the aircraft.
To the near plate is welded-on a small platform.with.four holes. Oa
this small platform 'are mounted and fastened by' four bolts the drive and
blower assemblies.
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. ,
The Sleeves with their-shock-absorbing springs of the upper frame of
-the camera mount are inserted into the sleeves on the angle iron; the _ 50X1 -
frame is then fastened, to clap rings.
The camer6. mounting for AgA-33/100m is analogous to that for cameras
() AFA-33/50M and. All'A.T33/75M.
The only difference ' is that instead of 1.1 and 1.6-mm springs
placed in the sleeves of camera mounting for AFA-33/50M and AFA33/75M,
the camera mounting for AFA-33/100M has two 1.6-mm springs.
EOM: The mentioned camera mountings are not included in the aerial
camera assembly, but are made by the factory on ? special request.
13. PACEMNG
(fig 39, 40, 41, 42)
All parts of cameras AFA-33/20M, AFA-33/50M, AFA-33/75M or AFA-33/
100M are packed in two boxes. In the first box is placed the cassette
with the portable board, and in the second all other components.
14. IIMRDEPENDENCE OF THE AERIAL CAMERA PARTS MID
DESCRIPTION OF RLECTRICAL CIRCUIT OF CAMERA
AFA-33/20M
(fig 36)
For proper performance of all the camera components they must be con-
nected in the following manner: the camera is first mounted with its
conical portion of the.trunnions on the camera mounting. Then the cassette
is mounted on the camera and the slide' plate is opened.
The drive and blower assemblies are mounted on the frame of the
camera mounting.. The reduction-gear shaft of the drive mechanism and
the exit shaft' of the camera are connected by Cardan shaft 15 (fig 8).
The air-blower nipple is connected to the camera nipple by ,a flexible
hose. ?
The command instrument, the drive-and-blower assemblies and the
camera are connected to each other by an electric cable. One end of'
the cable with a two-pin plug is connected to the power. line.
The current 'is adMitted to contract pair 9 of the terminAl box
(of ITU), and then through fuse PRl'to commOn switch VI, to upper con-
tact plate K5 (oh diagram shown As lower) and:to electric heater switch
V2.
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Current is 'Supplied to plus wire 1 either through switch Vi or 50X1
through contact K5 when the setting dial of IU is set on %M O". At
this time the lower pair of the contacts will close (on the electric dia-
gram,the upper/). Now lamp LI will glow indicating that the current is
flowing. Camera AFA-33/20M can operate in' several modes.
A. Photographing with a Set Inteval
In this case the, function of IOU is reduced to supplying-tothe RET
of the camera, and consquently to the camera actuating motor, current
pulses of specified duration at predetermined time intervals. When
.photographing at intervals through the upper pair of contacts K.c and
witch Pi, the current is fed to contact K1 (on KPU is inscription "Inter-
val"). When. witch B1 .(button."Start")?is turned on the current passes'
through the lower 'pair of contacts K5 to the motor armature of the com-
mand instrument M and then passing through the system of the rpm
regulator Ri and K.3 is admitted to the minus wire 4. The torque from
the motor shaft is transmitted to gear 257 (fig 29).
Swing lever 304 becomes engaged with its pawl 305 to ratchet wheel
301 and moves together with it toward contact Ki.
When plate 319 'closes contact K1, a current pulse will be
admitted to the camera. 'Then pawl 305 becomes disengaged from ratchet
Wheel 301 and. swing lever 204 under the tension of spring 321 is
retracted back to stop 322. After this pawl 305 again comes in mesh
with ratchet wheel 301 and the wing lever again begins to move toward
contact K1. Now'again, after contact Ki becomes closed, lever 304 will
be again, retracted back to. the stop, etc. Thus the swing lever 304 will
make reciprocal motion between stop 322 and contact Ki. The time interval
between two successive closings of contact Ki depends on the distance
between contact K1 and stop 322.. The greater the distance, the longer
Will be the time interval between two successive pulses sent to the
camera. Sincethe position of contact K1 is?-determined by the position
of the setting dial' of KPU, therefore the time interval between two
successive current pulses will also depend on the setting of the dial:
.At the instant o'. closing of contacts Ki current will be supplied
to the relay winding of the' dynamic brake (circuit 0111) through wire
2 in the camera (See.fig 63). ?
As a result of relay tripping, the middle plate of.K10 of this
relay will disengage from the upper plate and engage the lower plate.
Current will now. flow from wire 1 through series winding SC) 1
and armature:Ye:1 ofthe,,camera motor. Prior to this current was pass-
ing only through the parallel winding ShO 1. The armature now begins
to rotate.
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- The torque from: the Motor is transmitted by Cardan shaft 15 (fig 18)
.to power distributing mebhanism'(beginning of the operating cycle); as a5?X1
result of this cam 42 begins to. rotate (fig 8) and closes blocking con-
tacts 1(6 Prior.to.the breaking of contacts Ki and.KPU. Now the current
will be admitted to relay OR 1 only through contacts K6 during the rest
of the cycle. When.cam:42.mill turn with its depressed portion toward .
contacts K6, then.the latter will open and current will stop flowing to
the relay winding of dynamic braking. The middle plate of IC 10,* acted on
by the spring tension', will contact the upper plate and, thus, short-cir-
cuit the armature. Nbtor armature of the camera drive w= stop until
the next blosing of contacts IL.
During the motor operation motion is also transmitted to the cassette
, through a drive pinion and driving pin 23. Spool cam 204 and gear 205
are nolin mesh and begin to advance the film in the cassette of the
. second half of the frame .(beginning of the cycle).
During the advance. of the film, eccentric 231, which is connected ,
to central shaft 206, begins to press on the table roller and gradually
lower the table.
When the film has been advanced to the desired length, the spool -
caM'becomes disengaged from gear 205 and the movement of the film stops;
however, the central shaft With eccentric 231 will continue to rotate.
Aftera certain period eccentric 231 will fully lower the table over
the attached frame of the camera. With the table.lowered, air pressure
in the camera rises to a specified value, thus pressing the film to the
table and aligning the film with the focal plane.
During the advance of the film motion from the distributing mechan-
ism is transmitted to counter 7 and to winding of the shutter. When
the table has been fully lowered over the attached frame and the film
has been tightly pressed by the air to the table, then the shutter is
ready for operation.
When cam 107 (fig 14, 15) has rotated through a certain angle it
presses the fork pin 108 out of the slot of driving gear 100.
Notion is transmitted frciuthe driving gear to the disk gear. In
their rotation the disks will open and close the camera lens, thus
effecting the film exposure. Simultaneously with operation of the
shutter, contacts K 8 (fig 36) for the lamps of recording instruments
and KPU counter will also close. Readings of the recording instruments
(clock, level and counter) will be photographed on the film while the
electromagnet of counter 0E KPU-will operate and rotate ratchet wheel
330 (fig 29) by one'tooth:
? -3 S -
S-E-C-R-E-T
*No Foreign Dissem
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i.7-.CJ-"1/4.0 ?-.L.'0" J.
No Foreign Dissem
Then, after operation of the shutter, the cassette eccentric 231 50X1
will turn and raise the table) releasing the film.
The spdoi cam in the cassette now again will mesh with gear 205
and will advance the film from the unwinding spool to the winding spool
(first half of the frame).
Movementfromthe camera section is transmitted to the shutter
throughout the entire period of operation of the apparatus.
During the rotation of cam 107 with its geared sector 104, the
latter engages the geared sector of the drum. The drum, during its
rotation, winds the spring. .
After the completion of film advance (prior to the opening of safety
covers and lowering the table) contacts K 6 will open. Thus the winding
plate of this relay quickly disengages from the lower plate and engages
the upper plate, thus shorting the Ya 1 winding.
? 'Since armature Ya 1 continues to rotate due to its inertia and due
to the. presence of magnetic field caused by shunt winding ShO 1 of the
camera motor, an emf is induced in its winding. The kinetic energy of
swiftly rotating armature is converted into electric energy, which in.
turn is converted into heat.energy.
? Thus,to the drag forces of the mechanism which help to stop the
rotating armature is added another, more effective, braking force.
During the advance of the film current pulses. are admitted through
the making-and-breaking contact K7 to the lamp L ("Winding"). The
lamp now flickers. ?
Mechanical signalling is effected by rotation' of a signal disk
in the cassette mounted on .the semi-shaft of the unwinding spool. The
camera operating cycle is completed when the table and cassettee are
fully raised and the pointer on the driving shaft of the cassette is
opposite inscription "Free.".
.In such .a position the sliding plate can be closed and cassette
removed.
B. Photographic Control of the Results of Bombing -
In such a case the electric cable of ESBR is connected by its
plug to the socket of KW and by the other end to the bomb-release
button.
Switch P1 is turned-on in its downward position (to KPU -- in
position "Control of Bombing"). Just before bomb release, the IU
is switched on by pressing button "Start" VI. Current is admitted
? - -
S-E-C-R-E-T
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. .
No Foreign Dissem
through Contacts. K 5, switch P 1 and contacts K 4 to lamp L 3 ("Ready
for Control of 'Bombing"). This'lamp will glow only if contacts K 4
are closed, and this will odour if the electromagnet of ESBR 284
.(fig 29) is (b.-energized and PaWl 324 has entered recess "a". Current
will also be. a.dmitted?through contacts K 5 to motor M 1. ?
When the motor of'KPU operates, gear 257 rotates at constant rpm.
Pawl 324 holds cam washer 286 from rotation.
At the instant of pressing the bomb-release button (for 0.2 to
0.3 sec) electromagnet 284 operates, pawl 324 releases cam washer 286,
which begins to rotate with gear 257, contacts K 4 open and lamp L 3
goes out.
After a certain period, depending cn the position of bracket 323,
which is set by the yellow index on the dial, the projecting part of
cam washer 286 will close contact K 2.
The current will pass through closed contact K 2 and.. along wire
2 to relay winding OR 1 which In turn will connect camera motor for
continuous operation.
Cam washer 286, while rotating, will hold contacts K 2 closed for
25 sec while the protruding part of the washer passes over the plate
of contacts K 2. During this time lamp L3 will flicker indicating
advancment of the film. Then the cam, after a complete turnl.will
return to initial position and will be there by pawl 324, when
the latter enters recess "a".
50X1
Lamp L 3, Which .had momentarily stopped flashing, begins to glow
again. During 25 seconds of continuous operation of:the camera
it will take approximately 12 to 13 pictures, of which 2 to 7 will be
taken prior to bomb explosion and 10 to 6 after 'explosion.
? ? .0peration.of.mechatisms in preparation for next photographing
cycle is carried out. in the same sequence. During the operation of
KPU. in this mode, the swing lever 304 mill close the contact plates
of contact. K 1, however the current will not flow through them since
the contact K 1 in. this case.will. be still disconnected.
After completion of photographing it is, necessary to disconnect
the command instrument or. to set the dial into position " 0443" so as
to prevent wear of the instrument mechanisms.
, When, contact .K.Ivis closed during bombing control, the current'
.would flow through.wire.3 to contact K 7 in the cassette'if selenium rectifier
.11.12 were not present.*
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S-E-C-R-E-T
No Foreign Dissem
50X1
If the cam for electric signalling of film advance (located
in the cassette) would have been in position at which Contacts K 7 were
dozed, then current. would havepasse&to winding OR 1 and would have
actuated the drive motor, thus upsetting the coordinated performance of
camera AEA-33M.
Rectifier V, incorporated in KPU will not conduct current in this
direction, but will pass the dc current from K 7 to KPU unhindered.
C. Individual Photographs and Continuous
Operation
Individual photographs are taken by pressing button Kn.
Setting dial is placed in position "p0". The middle plate of
contact K 5 in this case (according to diagram) is connected to the top
plate. Normally, the middle plate of KFJ is connected to the lower
plate.
Thenthe current is admitted to the first wire when switch V 1 is
turned. off (button on ITU "Stop" is pressed). Now the ITU motor does not
operate. By.pressing down? the button K wires one and two are connected'
and current is then admitted to winding OR 1 of the camera; now the .
camera begins to. operate. When the button.?Kr1 .1 is released the wires .
one and two remain connected only through contact K 6 which will open
at the end of the camera cycle.
Switching-on for continuous mode of operation is effected by
switch V 3 which is connected in parallel with button I.
The setting dial is placed in position "
15. INTERCONNECTION BETWEEN PARTS OF AERIAL CAMERA
AFA-33/50M, AFA-33/75M and AFA-33/100M
? Since the mechanimsof? .'poWertransmission to the shutter and cassette
are fundamentally identical for all types of AFA cameras _ (fig 9, 10),
the interaction of the assembly components. is also almost identical,
with an exception that cameras AFA-33/75M, AFA-33/50M and. AFA-33/100M,
which are equipped with "Louver" shutter have over the lens: inside the
camera a safety cover.
At the instant when the. film is being advanced in the cassette,
the lens section of the camera the shutter is being cocked and the lens
cover opened,
8 -
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50X1
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?
No Foreign Dissem*
?
'When the table in the cassette is fully lowered over the attached
frame and: the film pressed by the table to the frame, then the lens Covers
will be fully open and the stutter ready for operation. '
-mien the/minding gear. 58 of the shutter and release cam 122 have been
turned through a certain angle. (fig 9, 10), the release cam shifts upper
lever 133 tO the side and thus releases the oscillating lever 131 of the
shutter (fig 17)..
The latter.underthe.action of spring 128, actuates the shutter, i.e .
exposes a picture frame..
Simultaneously Withtheoperation of the shutter the contacts will ?
be closed in the camera -section, which will switch on for a certain period,
of time the lamps of recording instruments (docks, levels and counter)
so that their readings can be recorded on the film. After operation of
the shutter, cam 288 will close contact 289 K 9 (fig 36) and transmit a
"current pulse to the oscillating camera mounting. If camera ARA-33M is
mounted on AKAFU-33 mount and is connected to it by an electric cable,
then the motor of A1ARU-33 mount begins to 'operate and to oscillate the
camera frame with the. camera (continuous operation of the camera).
During further movement transmitted from distributing mechanism
of the camera to. the cassette and shutter the lens covers in the lens
portion Of the camera will close under the action of springs 69 and 70.
Now eccentric 231 begins to rotate and the tableounder the action of
spring 234,rises to its initial position. The rest proceeds in a manner
similar to that with_camera ARA-33/20M. Electric heater of KPU is
turned on by switch V.2.(fig 36) when camera ARA-33M has. to operate
at temperatures between -15?C to -60?G. . The clock and shutter heaters
are turned onautomatically by thermostat TR 1 when the teMperature drops.
between ? +30 to +. '13?C.
16. INTERCONNECTION OF AKAFU-33 PARTS WITH AERIAL
CAMERA ARA-33K
(fig 36a)
To ensure proper performance of camera ARA-33M all the units of .
1=2, the camera ARA-33M, the drive and blower assemblies are connected
to each other by an. electric Cable (from ARA-33M assembly). The camera
mount AKAFU motor is connected to electric cable through an intermediate
cable which is part Of theARA733A assembly.
In the given variant the. electric cable AKAFU-33 and the control
panel are not used in the 'circuit. In this case KPU2 performs the func-
tions of a-control.panel, which is part of ARA-33M assembly. ?
. :The ,slIallesUnterval set on KPU2 when operating with ARA-33M and
AKA.FU-33 should be, not less than 4 sec. AKAFU-33 in conjunetion with
ARA-33M can execute three types of photography:
- 3 9
S-E-C-R-E-T
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
S-E-d-R-E-T
NO Foreign Dissem
;
50X1,
Plane photography (one-strip)
Two -strip photography
Three-strip photography
-.Switching of.AKAFU-33 to a desired type of photography (number of
strips) is carried out with the aid of switch P3 mounted on the motor
housing of AKAFU-33. Position of Switch P3 knob for' two-strip or three-
:strip operation is marked by.labels placed on the housing of AKAFU-33
motor.
1. One-strip Photography
(fig 36a)
To bring AKAFU-33 fro M any position to one-strip position it is
necessary to set the P2 switch on KPU2 into position "Off".
When the common switch of the command instrument Vi is turned on,
the current from. power line will travel along wire 9 through fuse PRi,
through witch Vi, through -switch P2 (point A), through contact Kil (in
AKAFU-33) to winding OR2. .The relay will now operate and close contact
K14, SO that. the motor will operate until the cam by its sector will
break contact K11. The 'cam sector is set in such a position that the
breaking of contact Kj1 takes place before the oscillating frame reaches?a
horizontal position. The frame of AKAFU-33 together with mounted on it
camera AFA-33M will continue to move (due to inertia of the motor arma-
ture) for .a certain time atter opening of contact K11 until it stops in
an exactly horizontal, position. Now the optical axis of camera will be
directed vertically.
When the contact K11 is broken, current will stop flowing through
relay OR2 winding and the relay will switch the contact; now the motor
will stop. The frame of AKAFU-33 now remains in this position.
? 2 Two-strip Photography
(fig 366;) ,
To switch AKAFU-33 to. the two-Strip operation it is necessary to
place the knob of switch P 3 in position S (two-strip photography).
After this set the AHAFU .switch On KPU2 in position "On" (P2 of point
V). Then press button "Start" on the command instrument, thus turning.
on the common. switch V1. Now the current through contacts K5 will be
admitted to. motor Ni of KPU2. Passing through a.system of rpm regulators
Ri and 1(3 the current is admitted to neutral wire 4.
.Now the motorithrough a system of gears and levers,will close con-
tacts K1 and send a current pulse to the camera. This is followed by
an operating cycle Of camera AFA-33M, At the end of the cycle, i.e.,
,
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Declassified in Part- Sanitized Copy Approved forRelease2013/11/18 : CIA-RDP80-00247A001300290001-4
No Foreign Dissem
after operation of the-shutterp.camera contacts K, close and send a 50X1
current pulse along wire 7" and through switch P2 set in position V to
KPU2; along wire 8 .to relay winding 0R2 of the AKAFU-33. Relay OR2 is
now actuatedloy this current and switches over contact Kilo. thus turning
on the motor of AKAFU-33 which begins to supply power at the output
shaft. When the output. shaft begins to rotate, the two-strip photography
cam with its sector will recede from. the spring of contaCt K12.
Now contacts Kip will close and the current from command instrument .
will pass to AKAFU-I1 along wire 1 through switch P 3 (type of photography),
which is set in position p (two-strip photography), and further through
..contacts K12 :along wire 7. to the command instrument. At this instant the
current pulse from the' camera contacts K9 has not yet ended, zo that there
will be two parallel circuits. The first circuit consists. of wire 1,
circuit of camera pulse contact Ko) and wire 7. The second circuit con-
sists of wire 1, switch, P3.circuit, point S (for two-strip photography),
contacts K12.and:Wire 7.. The duration of simultaneous operation of both
circuits is determined by required value of time overlap for transmitting a
pulse from camera contacts K9 to the beginning of closing of two-strip
:photography contacts K12.
The time overlap, i.e., the instant of simultaneous operation of the
two circuits, is needed, to avoid. a dead position, which is possible in the
case when the current pulse. from camera contacts Kg will end before the
AKAFU-33 cam has receded from the spring of contacts K12.
When contacts K12 are closed the current will travel through the
second circuit and then along wire 7 to IU through switch P2 set in
position V, then along wire 8 to relay winding pli2 of AKAFU-33; as a
result of this current will be admitted to the relay winding of AKAFU-33
even after the pulse from the camera has ended. The driving pin, on the
crank, while rotating, will carry along the connecting rod, which in
turn will-forcethe oscillating frame with the aerial camera to' move from
one-extreme'position to another extreme position. At this instant the
contacts K12 open, Now the relay winding OR2 becomes de-energized and
its contact Ki4 is, switched over in such a manner that the armature of
the AKAFU-33 motor is shorted and the motor stops.
When text pulse arrives at the relay winding OR2 the oscillating
? frame will return.to the initial extreme position.
Thus, to each pulse supplied to the AKAFU-33 relay ti-re will correspond a
shifting of the oscillating frame from one extreme position to another,
with an appropriate delay during which one picture frame is exposed.
3. Three-strip Photography
(fig.36a)
For suitching:of.AKAFU-33 to. three-strip photography, set switch
P8 into position .D .('three-strip photography), then turn on the AKAFU-33
switch on KPU2 ( P2 point V) and finally press button "Start", which in
. ?41
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No Foreign Dissem
,turn connects common switch Vi of KPU2. When the switch Vi is!turned 56(1
the command instrument.comes.into action and transmits through its COhuuel.
system a pulse to AFA.,33M. . The latter, after completion of the operating '
.cycleimill send from contacts K. a current pulse through wire 7 and switch.,
12 (point V) to the command instrument and to winding0R2 of the AKAFU-33,.
? motor. The relay now will switch on the motor.. Torque of the motor is
: transmitted to the output shaft through a worm gear. The three-strip ;
photography cam. rotating together with the shaft will disengage its sector
from the contact Ki3 springtin-consequence of which the contact will close..,,%
.Thereforelcurrent to the' relay winding OR2 will continue to be admitted
even after the pulse fromthe camera has ended.
The driving pin of the crank while rotating will carry along the
..connecting rod which will shift in turn the oscillating frame "with
aerial camera from the' middletc)the extreme position. At this instant
the contacts'IC break, the relay OR2 becomesde-eaegized and the motor
'stops. '
After operation of the shutter of camera AFA-33M the contacts K,
will again send a current pulse to the AKAFU-33., The oscillating frame
will being to shift from extreme position to the initial position until
the first sector on the cam reaches the contact terminal and breaks
contacts K1 . The motor will now stop, relay OR2 will stop the inertial.
3'
movement. oi the motor shaft and the oscillating frame will occupy the
initial extreme position,being?ready for the neXt exposure.
Similarly to the discribed procedure during operation of the AFA-33M
Shutter, the AKKFU-33 will move from the middle position to the next
. extreme position (the angle between sector No 2 and No 3 on the first cam
is 900) and then from:extreme.position to middle position (angle between
'sectors No 1 and No 2 is 90?). Then the operating cycle of AKAFU-33
repeats again.. .
?42?
S-E-C-R-E-T
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
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No Foreign Dissem
Si
Appendix No 1
APPENDIX to sEctimoxi
Table of altitude ranges at which aerial photographs may be made
.for various flight speeds and exposure times ?
For the AFA-33/20M:
Exposure
Flight speed in km/hr
200 250 300 350 400 450 500 550 600 65o 700 75o 800
1/50 sec
.1/100 sec
1/200 sec
2220 2780 3330 3380 444o 5000 555o 6100 6660 722Q 7780 8300 8800
1100 1380.1660 18ho 2220 2500 2780 3o5o 3330 3600 3890 4110 hhoo
55o 690: 830 970 1125.1250 1375 1500 1660 1800 1940 2080 2200
Exposure
Flight speed in km/hr
850 WO 950 1000
1/50 sec
1/100 sec
1/150 sec
9h00 l0000 lohoo 11100
4700 50o0 525a 55oo
2370 2500 265o 2800
For the AFA-33/50M:
Exposure
Flight, speed in km/hr
200
250
300
350
hoo h5o
5oo
55o
600
65o
700
75o
1/75 sec
3700'4620.
555o
648o
7hoo 8330 9250
10180
11100
12030
-
1/150 sec
1850
2500.
275o
325o
3700 4150
4625
5o90
?555o
6000
6500
6900
1/300 sec'
925
1160
1375
1625
1850 2080
2300
255o
2775
3000
3250
3h6o
xposure
V75 sec
1/150 sec
1/300 set
hr
800 85o 900 950 l000
_
7400 7850 8330 8780 9200
3700.3900 4170 4400 4650
? - 42> -
S-E-C-R-E-T
No Foreign Dissem
?
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Exposure
200
1/75 sec
5550
1/150 sec
2780
1/300 sec
1390
Exposure
200
1/75 sec
7400
1/125 sec
454o
1/200 sec
2770
50X1
For the AFA-33/75M:
FlAght snood in km/hr
250' .300 350 hoo 45o 500 ,550 600 650 _700 750 .
6900 9330 9720 11100
3470 h160 h86o 5550 6250 6940 7640 8330 9030 9720 io400.
1740 2360 2420 2780 3120 31170 3820 )1160 4500 4880 5520
?Lxposure
Flight speed in km.hr
800 850 900 950 1000
1/75 sec
. 1/150 sec
1/300 sec
11100 11800
5550 5900 6250 6600 6950
For the AEA-33/100N:
Flight speed in km/hr
250. 300 350 400 450 500 550 600 650 700. 750
9250 11100 - - _
5680 6800 7950 9090 10230 11360 12500 -
3470 L170 4860 5550 6250 6850 7640 8330 9030 972o 10500
Exposure
Flight speed in km/hr .
800 850 900 950 l000
1/75.sec
1/125 sec,
? 1/200 sec
11100 11800 12500 -
-.44-.
S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-E-T
? No Foreign Dissem
.?
?
Appendix No 2
...Table of Light Filter Factors
Designation and
Filter Color
Type pf
.Domestic PanehrOmatic
-? Aerial Photography FilM
ZhS -18
03-14
KS-14
50X1
1.7 1- 0.2
2 . 7 t .0.14
74.1.
? Appendix No 3
?art S list, Weights and Dimensions
? Components of the AFA-33/20M, AEA-33/OM, AFA-33/75M, and AFA-33/100M
.cameras tome in two boxes (see Figures 40, 41, and 42).
The complete .,et for. the AFA-33/20M camera includes:
Part
- No
NAME
1
2
Quantity
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Camera -with cone,. Objective lens unit, clock, lens cover,
? and light filters ZhS.18, 05,-14, and KS-14
Film holder with two. spools
'Command instrument with dovetail mounting plate
.Drive and air pressure assembly
Carden shaft -
Electrical cable'
'Electrical cable
Flexible hose
Drive handle _
Film holder handle
Key to film holder .
Attachment for !opening slide plate
Camera cove/-
Nipple' ?
Contact with brush
I3P-.20.safety fuse
Univerbal.spanner wrench
Spring for mount
Can with non-freezing 2TsKPa lubricant (70 g)
.Punch
S-E-C-R-E-T
No Foreign Dissem
1
1
1
1
1
1
?1
1
2
1 IA
1 g I
1
1
6
4
1
1
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? S-E-C-R-E-T
No Foreign DisSem
1
2
. 21
22
23
? 24
? 25
26
.27
? 28
29
30
31
32
33
34
35
36
37
38
Can with lTsKP lubricant (20 g)
Can wW1 GSA lubricant (20 g)
Brush for MA-40A electric Motor
Spring for MA-t0A'eleetric motor
Brush for MU-010 electric motor
-Cover for MU-010 electric motor---7 ?
1.1!/..ench (for round huts)
Aircraft electric bulb, 26 v, 5 w
Miniature bulb, 26 vl 0.15 a or 0.12 a.
Cloth, .30 QM X:15 cm
Film holder box :with carrying board
Box for complete set .
Description of the. AFA-33M.
Data hard (log)
Description, for MA-40A
Certificate fdr MA-140A:
Certificate for MU-010
,Certificate -for .clock
50X1
The complete set.for the AFA-33/50M, 75M and 100 M cameras. includes:
Part
No
NAPE
Quantity
1
2
3
1
2
3
4
5
6
7
8
9
lo
11
12
13
14
?15
16
'Camera With cone, objective lens unit, clock, lens cover,
and'light filters-2118-18, 03-14, and KS-14
Film holder.with two spools
.for the AFA-33/50M
for the AFA-33/75M ?
for the AFA-33/100M
Command instrument.with..dovetail mounting plate
Drive and air pressure assembly
Carden shaft
Electrical cable
Electrical cable
Flexible. hose. ?
Drive handle .
Film holder handle
Key to film hOlder
Attachment for oPening slide plate
Camera .cover ?
Nipple
Contact with brush
13P-20 safety fuse.
? - 4G -
S-E-C-R-E-T
.No Foreign Dissem
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1
1
1
1
1
? 1
1
1
1
1
1
2
1
1
1
1
6
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No Foreign Dissem
1 2 50X1
17 Universal.sPanner Wrench 1 .
18 Spring for mount ? . 4
19 Can with non-freezing 2TsKPa lubricant (70 g) 1
20, Punch . ? 1
21 Can with lTsKP lubricant (20 g) 1
22 Can with GSA lubrient (20 g) 1
: 23 .Brush for MA-40A electric motor, 4,
24 :Spring for MA-40A .electric. motor 4
25: Brush for KU-010 electric motor 2
26 Lover for MU-010. electric motor 2
27 Wrench (for round nuts) 1
28 Aircraft electric bulb, 26 v, .5 w 8
29 Miniature bulb, 26 v,.0.15e or 0.12 a 10
30 Electrical cable . 1
31 Cleth, 30 cm x 15 cm 2
32 Film holder box with carrying board 1
33 Box for complete set
for the AFA-33/5014 1
for the AFA-33/75M . 1
for the AFA-33/100M 1
.34 Description of the:AFA-33M 1.
35 Data card (log)
for the AFA-33/50M
for the AFA-33/75M
for the AFA-33/100M
36 Description for MA-40A
37 Certificate for MA-40A
38 certificate forMU-010
39 Certificate for clock
1
1
1
1
2
1
1
The film holder with two spools and film, the camera with objective
lens unit, and the command instrument, drive and air pressure assembly, Cardan
shaft, flexible hose, electrical. cables, light filters, and clock comprise
the flight set for the AFA-33M (see Figures 1, 2 and 3).
Variant
Flight Weight)
kg -
Stowage Weight,
kg
Packaged Weight,
kg
AFA-33/20M
AFA-33/50M
AFA-33/75M
AFA-33/100M
not more than 72
not more than 80
not more than 85
not more than 95
not more than 140
not more than 150
not more than .155
not more than 165
not more than 185
not more than 235
not more than 250
not more than 285
-47
S-E-C-R-E-T
No Foreign Dissem
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. No Foreign Dissem
Over-all dimensions of the camera with mount (mm):
AFA-33/20M'? (620 x 773) x 570 x 510
AYA-33/50M .(765 x 950) x 745 x 815
AFA-33/75M (745 x 950) x 745 x 845
AFA-33/100M. (765 x 950) x 745 x 1075-!
50X1
NOTE: Dimensions in parentheses are those of the minimum and maximum
width of. the, camera mount which is ?achieved by extension of the angle pIa:bes
(when.using the factory-supplied camera mount)..
Over-all dimensions of the command instrument (mm):
180 x 190 x 123.
Stowage dimensions (mm):
Variant
AFA-33/20M
AFA-33/50M
AFA-33/75M
AFA-33/100M
Camera Box
Film Holder Box
t
767 x 477 x 852
672 x 621 x 812
672 x 621 x 812
682 x 613 x 982
512 x 310 x 602. 1.
Package dimensions (mm):
Camera Box
AFA-33/20M
AFA-33/50M, 75M AFA-33/100M
Film Holder Box
915 x 590 x 1042
800x 725 x 980 822 x 720 x 1160 652 x 412 x 780
? 48 ?
S-E-C-R-E-T
Nn Woreian Dissem
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.to Foreign Dissem
50X1
SECTION TWO
INSTRUCTIONS ON OPERATION AND TECHNICAL SERVICING OF THE
AFA-3314 AERIAL CAMERA
I. Basic Regulating and Technical Data
The AFA-33M aerial camera must possess the following basic
adjustment and technical characteristics:
1. The camera must operate reliably at a voltage of 26 v 10%.
At 23.4v the end of the cycle should occur with the film holder
table in the extreme uppermost position. Continuous operation should
not be observed at 28.6v. The duration of the operating cycle should
not exceed 2 sec at a voltage of 26v and temperatures from +150 C to
..4-250 C.
2. Current consumption of all units of the camera with the KPU
electrid heater, clock recorder heater, and shutter heater turned on
for the AFA-33/20M, 50M, 75M, and 100M cameras should not exceed 13.5a
at a voltage of 26v and tempeiatures from 415? C. to 425?C. Current
conSumption at a temperature of -600 C with electric heaters on should
not exceed 16a.
? 3. A 20 ampere fuse must be installed in the aircraft' electrical
network Which supplies the camera.?
4: The electric Motors of the camera and thaair pressure Unit .
should operate at 9500'rpm-t-1010 at 26v and under rated load, while the
no-load current of the motors should not exceed 2.2a.
The KPU2 electric motor must operate at 87007 rpm (without
regulator at 26v and the rated load moment of 40 gc .
5. True shutter exposure times must lie within the following limits:
a) Iris shutter in the AEA-33/20M
At
1/50 sea
from 1/42'
to
1/72 sec
At
1/100 sec
from 1/87
to
1/133 sec
At
1/200 sec?
from 1/167
to
? 1/250 sec
-49 -
S-E-C-R-E-T
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.
c)
Louver shutter in
/ .
At 1.75 sec
At 1/150 sec
At 1/300 sec
Louver shutter:in
At 1/75 sec
?At 1/125 sec
At 1/200 sec
No Foreign Disseth
the AFA-33/50M and AFA-33/75M
from 1/65 . to
from 1/130 to
from 1/261 to
the AFA'-33/100M
from 1/65 to
from 1/104 to
from 1/167 to
50X1
.,
1/94 sec
'1/188 sec
1/375 sec
'
1/94 sec
1/156 sec
1/250 sec
6. Mechanical adjustments of the AFA-33M camera must correspond
to the following table:
No
Name of Element Subject to
'Mechanical Adjustment
Mech. Adjust. in
Revolutions of
Manual Drive .
1
2
3
14-
5
6
7
8
9
10
11
Exposure .
Closing of Protective Covers
Beginning of Closing .of AKAFU pulse contacts
Extinguishing of Lights of Recording
Instruments
Separation of Table From Detachable Frame
of Camera (Beginning)
Beginning of Film Advance
End of Film Advance
Beginning Of Opening of Protective Covers.
Pressing of' Table. Against Frame (at Pressure'
Of 130 mm H20 for AFA-33/50M, 75M, 100M,
.and 110 mm H20 for AFA-33/20M)
Beginning of-Illumination by Lights of
Recording Instruments
Exposure
0
not less than 0.25
0.5 - 1.5
not more than 1.0
0.5
- 1.)
1.25
- 2.50
7.25
- 8.50
not later than 9.0
8.5 - 9.3
not earlier than 9.0
10.0
NOTE: The mechanical adjustment of each camera must ensure the
absence ofany.overlapping of adjacent elements of tbe cycle with the
exception of-elements 2 and 3 above..
7. .The cam.of the Contacts which interrupt the operating cycle cf
.the camera must be adjusted so that the cycle terminates at that moment
when thetable of the film hOlder is in the extreme uppermost position.
AT^ iniccAyn
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50X1
8. The cam of the recording instruments contact must provide a
normal image density of the clock, level, and counter on panchromatic
aerial pheCOgraphic film with a sensitivity Sd 0.85 = 400?, 6000, and
800?. The intensity of the lights of the recording instruments may
be adjusted by means of a rheostat.
9. The cam of the AKAFU camera mount must permit adjustment of
the duration of the current pulse from 1.25 to 2.5 revolutions of the
camera handle.
10: The camera mechanism must be assembled in such a manner that,
beginning with the moment of contact between the film holder table
and the detachable frame of thecamera, the rod of thetable drops
1-2 mm due to the action. of the eccentric.
11. No jerking or seizing motion is permitted in the operation
of the mangle gear transmiSsion.
12. The gluing on the film holder table must be level and tight.
13. The slide plate of the film holder must move freely in the
guides without jerking or seizing.
14. The shutter should operate at the moment the protective
covers are beyond the field of view of the lens system.
15. Pressure in the camera chamber must be at a maximum but not
less than 130 mm H0 for the AFA-33/50M, 75M, and 100M and 110mm
for the AFA-33/20 at temperatures from .4-15? C to 425?C and a voltageUf7.23.
16. The end sleeve of the film holder should not become disengaged
during operation of the APA-33M camera.
17. The thermostat should switch on at temperatures from t-30 C to
-1-13? C and should switch off at temperatures from 4-20? C to 4-30? C.
18. The centrifugal governor of the electric motor for command
instrument KPU2 must provide a constant number Of revolutions equal to
7500 rpm7t5% at a line voltage of 26 v10%.
19. Deviations of the actual time intervals between exposures
from the rated time intervals at a voltage of 26 v and temperatures
from 1-150 C to-4-25?C. must not exceed the limits noted in the
following table:
-SA -
S-E-C-R-E-T
Ain Pnrc,irrin Ticc,ym
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50X1
3.sed tb.4 sec for an average of 10 cycles
..5 sec 1'0.5- sec for an average of 10 cycles
20 sec t %3 sec for an average of .5 cycles
60 sect 5 sec for an average of ',3 cycles
20. The setting dial of the command instrument must turn freely
by hand but must not change its position during the operation of KPU2.
21. The closing time of the contacts of command instrument KPU2
which supply the current pulses to the camera must lie within limits
of 0.3 to 0.7 sec.
22.. .The resolution .of the.AFA-33M must be no less than that
given in the log.
23.. There should be no short-circuits in any-of the electrical
wiring of the AFA camera unit.
24. The camera takes 190 photographs with a size of 30 x 30 cm
and a spacing between photographs of 10 to 25 mm.
25: The gap between open contacts must be no less than 07.5 mm,
and the surfaces of the.closed contacts must be flat and parallel.
26. The following are mutually interchangeable parts of the
AFA-33M:
a) Film holder.
b) Command instrument KPU2.
c) Drive and air -pressure units.
d) Electric motor's, of the drive and air pressure units.
.e) Spools.
f) Elebtrical'cables.,
g) Drive handles of.the..camera unit and film holder.
h). Electric bulb holders.
i) Keys. for the film holder.
j) Board for 'Carrying-the film holder.
k) DoVetail'fitting'of KPU2.
- -
S-E-C-R-E-T
No Foreign Disseqi
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?
? ,S-E-C-A-E-T
No Foreigh Dissem
1) Flexible hose.
m) Cardan shaft.
n) Electric motor MU-010 Of command instrument KFU2.
o) Light filters (only within their own camera variant).
27. Operation of the.AFA-33M from the ESBR (electric bomb releases
button:
? 50X1
The command instrument should provide for operation of the aerial '
camera from the ESBR button when the latter is pressed for a period of
time between 0.2 and 0.3 sec.
When the 30 sec mark inscribed on the dial of the ITT.12 is placed
opposite the yellow index mark ("T bomb"), the cam washer should switch
the camera to continuous operation after a period of 20 sec-J:2 sec from
the moment the ESBR button is pressed.
The duration of continuous operation, of the camera should be 25+
? 2 sec.
1.)
- S3 ?
? S-E.-C-R-E-T
Nn Vnrc,irm niccez.m
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50X1
II. INSTRUCTIONS ON OPERATION AND TECHNICAL SERVICING
1. Preliminary Checking.
Prior to using a newly received aerial camera the following
should be checked:
1. Check whether all parts of the aerial camera are present
according to the list. ,
2. Remove the protective greaSe, examine the 'external apperance
of the equipment and check the operation of the mechanisms. ,
3. Check the rrechanical alignment of the AFA camera.
14. Check the air pressure in the camera during exposure.
.5. Test the performance of the camera with current on.
?
If the aerial .camera was in storage for more than one year,
then the ball, bearings of electric motor MA-40A should be lubricated
with GSA. Lubrication should be carried out according to instructions
presented in the description of electric motor MA-20A.
For lubrication the reduction gear and the blOwer motors MA-40A
shOuld be removed fromtheir cups (housings).
The presence of all parts of aerial camera in packing boxes is
checked by comparing with the list attached to the box covers.
Examination of external' appearance':
1. Be sure that there are no external damages to the protruding
parts of the aerial.camera.
. 2. Be sure there are no cracks or chipping on parts made of
plastic.
3. Check for cleanness inside the cassette and camera, and for
the absence of foreign objects in the camera mechanism.
4. Check cleanness of the lenses.
To check the perforMance of the camera.mechanismsiconnect
all of the parts in the following manner:
S-E-C-R-E-T
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50X1
' ? a): Connect the Carden shaft. to the reduction gear of the drive
assembly and to the ihput shaft of the -camera actuating mechanism.
b) Connect the flexible hose to the nipple of the air blower
of the drive and lacver.assembly, and to the camera nipple.
0 Connect the two parts of the electric cable.
'd) Connect the cable.plugs to the command instrument, to the
camera, and to the drive and blower assembly.
e) Connect the cable plug (connected to ESBR) to the.socket of
the command instrument..
f) Fress.redsbution."Stop" on the command instrument, set all
the switches in lower position, set the command instrument counter
into zero position. Then.connect the power supply plug-to the 26-v,
dc power source.'
NOTE: The thick pin of the supply should be connected to the
positive terminal.
The performance of the AFA Mechanisms is checked in the
following manner:
a) Full the Sliding locks all way out, remove the Safety cover
from the camera attached frame. . :A
fl
b) Set the command instrument dial on the interval 5 to 7 sec.
c) Press the green bttton "Startt!.
d) Check during operation if the red lamp is glowing, whether
the exposure counter of the command instrument works properly; check
whether air is supplied to the camera, whether the shutter and the
lens safety covers operate properly (in AFA-33/50m, 7514, 100M) and
whether the recording instruments become properly illuminated during
the shutter operation.,
e) If testing of the AFA camera is carried out with the oscillating
mount AKAFU-33, then it is necessary to connect the intermediate electric
cable. Now connect appropriate switches on the command instrument and
check its performance and signalling (yellow lamp).
f) .,Set the setting dial in position noon and check the performance
of camera AFA with the aid ofbutton for single exposures and for the
continuous operating mode.
S-E-C-R-E-T
nicec.7,1
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.No Foreign Dissem
e Withlheyealow index on the dial (nhomb") set at' 30 sec, set t1:50X1.
switch in position "Control of Bombing" and press green button. After q
the green 7a.mp at the end of electric cable leading to the electric
release starts to glow supply a short 26-volt pulse. Check the camer..
for continuous operation 20 sec after the supply of the pulse and turn
it off after 25 second of continuous-operation.
It isipossible that the camera mechanism might stop in such a
position'that:the.safety cover stays open and the last frame becomes
exposed.
It should be remembered that turning-on of the switch 'Control of '
Bombing" should be 'made only after setting the yellow index ("T bomb")
opposite-a graduation ornumber of the dial corresponding to estimated,
time of the bomb fall. prior to impact, which,however).should not
exceed 60 sec.
.After completion of the indicated tests press the red button,
insert the cassette load with an exposed film into the camera and
remove the-cassette cover. Check the camera operation with the aid
of the crank and observe the advance of the film. Set the setting
dial at an interval 'of. 5-7 sec and set the switch into lower position,
then press the button "Start".
? During the Operation observe the advance of the film, the
signalling lamp of the command instrument and the rising and
lowering of the table.. Pay special attention to the operation of
the command instrument counter. If the oscillating camera mount is.
in use check its performance; also check whether the switch on KPU is
properly set for the oscillating mode and continuous photographing.
The proper sequence of performance of the aerial camera
components during the Operating cycle is checked in the following
manner:
a) disconnect the Cardan shaft from the camera input shaft and
the reduction gear of the drive assembly;
b) connect to the camera input shaft the manual drive;
c) remove the cassette;
d) rotate slowly clockwise the manual drive lever until the
shutter operates (as determined by the click).
- -
S-E-C-R-E-T
No Foreign Dissem
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Count the number of turns of the manual lever from the instant 50X1
of.shutter.operation till the closing and the beginning of opening
of the safe(y cover. The instant of clOsing and opening of the safety
cover is determined visually. Then load the cassette with an exposed
filth and place. it in camera with cover removed. The 'mechanism is now
brought into action hy-the:drive lever.
' Count from the instant of shutter operation the number of turns
of the drive lever up to the instant of separation of the table from
the attachable camera frame; count from the beginning of film advance
and the end of advance to the instant the table firmly presses against
the frame.
The measured number, of turns of the drive lever should be within
the limits indicated in the, table on page 44.
After. indicated checking do the following:
a)' load the camera with 3-5 m of unexposed film;
b) set the rheostat handle with' its index cpposite a number. on
the dial corresponding to the sensitivity of the aerial film loaded;
c) interconnect: all the components and take 8-10 ground exposures;
d) develop the exposed.' film in a manually operated developing
device using fast developer for 8-10 min.
If the image density ofthe recording instruments does not differ
'considerably from the.density of the rest of the film, then the cams
of recording instruments are properly adjusted. ' Checking the contacts
of the AKAFU thount'is_carried out with the aid of test lamp: For this
it is necessary to::
a) Connect one end of the electric-lamp wire to the fourth
receptacle of the socket of the AKAFU cable and the second end to the
first receptacle. ?
\
b) rotate' the camera lever and count the number of turns at which
the pulse Contacts open and close, i.e., the lamp goes on and. off.
The number of turns Should be within the limits indicated in. the table
on-page 44.
Checking the adjustment of the switch-off contacts with the RDT
of the camera motor is carried out in the following manner:
a) set an interval of 3 sec on the command instrument and connect
the aerial camera for operation;
- 57-
S-E-C-R-E-T
'N Foreign Dissem
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the' end of.each.cycle see that the cassette table is in
t1 extreme upper position and the table-position indicator is
-over the iriacription "Clear%
? To check the air' pressure in the camera remove the screw from
trunnion 11 and screw in a nipple supplied in the spare part kit (ZIP)
which iS a part of the AFA-33M assembly. 'Connect to this nipple the
rubber hose-of_a water- Manometer, place the cover over the cassette
and pull out the sliding plate. Then set the interval disk of the
command instrument in position "oo", turn on the general switch and
rotate. the.manual drive up to the instant of the shutter operation.
At the instant. of. the shutter operation atop the rotation of the.
manual drive and measure the pressure as indicated on the water
manometer. The difference in height of the water columns of the
right and left.tubea at a .voltage of 23.4 V should be not less than
130 mm for cameras AFA33/50M,? 751v1, and 100M, and not less than 110 mm
for camera MA-33/20M.
50X1
NOTE: In taking the pressure measurements sharp bends of the
rubber hose should'beavoided.
If these preliminary tests gave positive results then it is
necessary to check the camera performance in actualoperation by taking
5-10 pictures.
?
- 8 -
S-E-C-R-E-T
No Foreign Dissem
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. .Pre-Flight Preparation of the AFAw
Installing the AFA in the Aircraft
? The aerial camera is installed in the aircraft as follows:
? a) Open the catches on the hinged clamps of the camera mount.
b) Set the truniops.of the camera in the receptacles of the
mount so' that the drive head: is on the right when looking in the
direction .of flight.
c) Close the hinged clamps of the camera mount.
d) Tighten the thumb screws which holds the camera trunion to
the frame of the camera mount,
e) Using the hinged level of the camera and the set screws on
the camera mount, set the focal plane of the camera in a horizontal
position and then return the level to its position in the camera.
f) MoUnt the drive and air pressure assembly on the camera mount
or on a bracket.
50X1
In the event that. the drive and air pressure assembly is not
mounted on.reguler mounting surface. but in some other area, it will
be necessary to looSen. the screws which hold the reduction gear unit
309 (Figure 32) and :turn the unit so that the bayonet sockets for the
Carden shaft are parallel. .In this case the angle between the axes of
the Cardan .shaft and the bayonet sockets must be no. more than 300.
g) Place the command instrument on the dovetail Mounting..
h) Remove the lens cover.
0 Wipe the lens and light filter with a flannel cloth.
j) Place the appropriate light filter on the lens.
Connect all parts of the camera as shown in the section "Preliminary'
Preparation."
Do not permitsharp.bends'in the rubber hose when connecting it to
the respective openings. -If necessary connect Ithe ESBR electrical cable
to the command instrument and the ESBR.
- 59 -
S-E-C-R-E-T
No Foreign Dissem ?
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NO Foreign Dissem ?
Placing the film holder on the camera
Pull out?the lock bars, as far as possible and remove the top
protective cover from, the camera unit. -
Unfasten the film hbider from its carrying board and Place it
on the camera.
The guide pin' of he Camera will connect with the drive head of
? the.film holder automatically:
50X1
NOTE: If there is difficulty in mounting the drive and air
pressure assembly due.to design peculiarities in the aircraft or .
mounting area, the blower housing may be turned 900 in either direction.
This is done as follows:
- a) Loosen the screws holding the blower .housing and remove it.
? b) Unscrew the flirt' from the shaft of the electric motor and
remove fam.31 (Figure 31), 'being Careful not to damage the blades.
c) Unscrew the four countersunk screws and turn the housing of
the blower 90? in either direction.
Reassemble the blower in the opposite sequence.
When replacing the upper half of the housing make sure that it
is pressed against the' sealing ring; otherwise, a leakage of air may
Occur. . ?
After performing the above adjustments, test the operation of the
blower with the-camera by connecting all parts with the electrical cable
and connecting?the apparatus-to. the 23.4 v power supply network.
The pressuremust be not less than 130 mm 1120 'in the AFA-33/50M,
754, and. 100M camera and not less than 110 mm'in the AFA-33/20M.
Listen to the fan to' check whether or not it is operating; the
fan must not brush against the blower housing as it turns, '
After performing the above work and tests, the responsible person
should make the appropriate entry in the log.
-4Z)
S-E-C-R-E-T
No Foreign Dissem?
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S,E-C-R-E-T
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After placing the film holder 'on the camera unit, close the 1ock5ox1
bars. . Open/fullythe slide plate of the film holder.
When the. slide plate is fully open the four red marks (two on
the slide.plate.andtwo on the slide plate.guide) should form a
.straight. line,
The following procedure is required when the camera has been.
installed in. the aircraft:
? 1. Perform an external inspection of all components and parts
of the photographic equipment and check the tightness of the attach-
ments.
2. Check that parts 'of the Camera do not come into contact with
parts of the aircraft. .Particular attention should be devoted to
checking that parts of the camera and camera mount do not touch the
cables and control linkages of the aircraft.
- 3. Check the operation of the control elements for the camera
ports.' If the ports do not have remote Control, the doors (covers)
must be opened before taking off.
4. Check the rating of the fuse in the camera's electrical
circuit.
5. Set the desired exposure.
6. Set the index mark on the rheostat handle opposite the
number corresponding to.the sensitivity of the film.
7. Set the proper tithe interval on the command instrument in
accordance with the photography mission.
8. Open the slide Plate of the film holder, wind the clock and
place it in the Camera.
9. Set the counters on the camera and the command instrument to
zero.
10. Test the operation of the camera by taking two to three
photographs.
-GI -
SE-C-R-E-T
No Foreign Dissem
ff.-%
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When doing this, check the following: L50X1
a) advance of the film and operation of the signal light on
the command instrument;.
b) operation of the shutter by-direct observation at the side
of the lens-or by listening;
c) operation of the AEAFU camera mount.
Before take-off for a photography 'mission the navigator is
required to inspect the photographic equipment. and to check the
following:
a) operation.of the control elements of the camera port doors.
If the ports do not have remote control the doors (covers) of the
camera ports must be opened before flight;
? b). the presence of the proper fuse in the camera circuit;
c) whether the slide plate of the film holder is open;
d) whether the lens cover has been removed;
e) whether the exposure, the rheostat handle, and the light
filter have been correctly set;
f) that the type and quantity of photographic film correspond.
to the photography mission.
Test the operation of the camera by taking two or three photo-
graphs in the presence of the photo technician or the aircraft
mechanic.
3. Operation of the AFA Camera in Flight
Switch on the electric heaters in the command instrument While
observing.the following conditions:
a) . In winter With .a ground temperature of -15? C'and.leSs, the
heater'should'be switched On 15 minutes before using the camera.
b) When the ground temperature has not reached -15? c,. the
electric heater is switched on during flight when the air temperature
has dropped to C.and remains on during the entire period of
camera operation.
? SE-C-R-E-T
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c). The electric.heaters for the clock and shutter are switched .
on. automatically at:a:surrounding air temperature from *30 C to +13? c5OX1
and araawi.6ched off at'a temperature from 1.20? C to +300 Q.
When.photographing strips it is necessary to: set the computed,
time interval on the 'command instrument and place the switches on the
operating mode with the interval;, place the switch for the oscillating
caMera mount in the required position and press the green "PUSK" [start).
button when the aircraft approaches the starting reference point.
By means of the signal light periodically check that the film
is advanctng.. Note'the number of photographs taken according to
the counter on the command instrument and check the operation of the
oscillating camera Mount with the, signal light.. As the aircraft
approaches the finishing reference point switch off the camera by
Pressing on the red."Ostanov" [stop] button. Subsequent Strips are
photographed in the. same sequence given above.
Single photographs maybe taken by pressing the button marked
for this purpose. The setting dial must be placed on "Do". If it is
required that One or several additional photographs be taken during
a strip photography sequence, button maybe pressed at the
appropriate moment:.. The button should be depressed for approximately
0,5 seconds.
'Photographic. observation of bombing results is carried out in the
following manner:' set the division or number on the dial correspon-
ding to the calculated bomb drop time opposite the yellow index mark
("T-bombs"). Place the switch in the position "Kontrol' bombometaniya"
[bombing observation]. .Place the switch for the operating mode of the
oscillating camera mount in the desired position. The continuous
Operation switch must be Off. Press the "PUSK" [start] button 1.5 - 2
minutes before the bomb is dropped.
Once the ESBR button has been pressed, note the signal light for
film advance, the reading of the counter, and tbesignal light for
operation of the oscillating camera. mount.
The next bombing approach may be made when the "Gotov k kontrolyu
bombometaniya" [ready for bombing observation) goes on.
When the photographing run is finished turn off the command
instrument'by pressing the red button. If the setting disk is on
the mark "oo", set it.to,some other time interval, switch off the
heater, and close the. camera port.
?C 3-"
S-E-C-R-E-T
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50X1
Post-Flight Preparation
1. Question the flight crew on the operation of the photographic
equipment in the air. Fill out the report sheet. Record in your own
work book any malfunctions which were noted in the equipment.
2. Test the operation of the camera (2 - 3 frames) in the
presence of the navigator or pilot.
3. Close the- slide plate and remove the film holder. Place the
protective cover on the camera and the lens cover on the lens.
? 4. Remove the exposed film from the film holder and send it to
be processed.
. 5. Conduct a detailed external inspection of the photographic
equipment and clean off all dirt and dust. Check the following:
a.) the condition of the components and parts of the apparatus
which are accessible without disassembly of the mechanisms;
b) the attachment of the mounts to the aircraft, attachment of
the camera to the camera mount, and the condition of the shock '
absorbers;
c) the attachment of the command instruments, toggle switches,'
signal lights, locks; port Covers, and other components of the
photographic equipment.;
d) the condition of the doors (covers) and control elements of
the camera ports;
e) the tightness of the electrical cables and plug connectors
and the reliabiJity of the cable connections with the command
instrument, camera, and other units.
o. Correct all defects which were noted.
7. Load the film holder and place it on the camera.
8. Check the operation of the camera by taking 2 - 3 photographs.
9. Disconnect the camera from the aircraft power supply and loosen
the catch springs, having set the camera at maximum exposure. Place
the lens cover on the lens and close the camera port.
-64- .
No Foreign Dissem
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To Foreign Dissem
. _
NOTE: Film.holders must be carried betweerirthe aircraft and the50X1
film.loadi 0 area Carefully in.either film holder boxes or On carrying
? boards.
Unloading the Film Holder
The film holder is. unloaded as follows:
a) .Unfasten the strap .and remove the film holder from the carrying
board.
.b). Place the film holder on a clean table with the drive mechanism
to the right:
c) Open the hinged catches using the key.
d) Remove the'cover from the film holder and disconnect the film
metering roller.
e) Turn the take-up spoOl 2 or 3 revolutions and cut. the film
between the metering roller and the take-up spool.
f) Depreas the: safety catch and pull Out the semi-axis.
g) Remove the take-up spool.
h) Record the date the :film was exposed and the name of the
navigator on an unused. frame at the end of the removed film.
i) -Wrap the takeup spool with the. film in black paper and
insert it in A metal film can.
j) Write the size, type, and sensitivity of the film, the date
the film was unloaded from the film holder, the number of the report
sheet, and the name Of the person unloading the film holder on the can.
6. ?Loading the Film Holder
The film holder: should be loaded in a photo laboratory on a
clean, dry bench which is :free if extraneous objects which might
? interfere with the loading.
? The film holder isunfastened from the carrying board and its
reference plane (base) iSplaced on the bench so that the drive head
is on the right.?
? -
skTO Foreign Dissem ?
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? If the spool with?the film has a safety threading end (leader) 50X1
the film .holder may-be .loaded in indirect daylight. If there is no .
leader on 'die film, loading must be carried out in complete darkness.
The following 'steps should be taken after the film holder has
been placed on the table:* ?
a) Check that the pointer is opposite the white arc with the.
inscription "Syobodno" [free]. If the edge of the pointer does not fl
lie within the white arc, set the pointer opposite the middle of the t .
arc by turning the head of the film holder.
b): Open the hinged catches and, by lifting the cover of the film
holder upward, remove it from the housing and place it on the bench on
the left side:
c) Disconnect the metering roller from the drive.
d) Tress the safety catches and pull Out the semi-axes as far
as possible.
e) Hold the take-up spool in the middle and turn it slightly
until the lead pin of the right semi-axis enters the side openings in
the spool; then align the left semi-axis with the opening in the spool.
f) Place the supply spool on its semi-axes in the same manner as
the take-up spool.
If the threading end of the film has not been prepared,_cut. the
film at an angle with a pair of scissors (at an angle of approximately
450). The threading end of the film must leave the spool in the
direction toward the person loading the film holder.
Grasp the threading end. of the film with both hands and pull it
out over the.guide roller to a length of 30 - 4o cm. Then bend the
film around the guide roller and pass it between the spring table and
the slide plate'until it emerges at the side toward the metering roller.
Pass the end of the film between the press roller and the metering
roller. Attach the end of the film to the take-up spool, checking
carefully that the film is aligned and that the teeth on the metering
roller are engaged in the perforations of the film.
-
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No Foreign Dissem
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No FOreign Dissem.
? Then, holding the supply spool tightly, turn the take-up spool 50X1
1.5 - 2 revolutions. Place the cover on the film holder and lock the
catches wit1i the key. .Record the following information with a pencil
on the record plate.(cover.of the. film holder): .type and length of
the loaded film in meters '(determined by reading the film length
counter), the date of loading, and the name of the person who. loaded ,
.the film holder.
r ? .1,...,4,
Place the film holder. on the carrying board and tighten the straps.
7. Routine Maintenance
Routine maintenance work on the AFA-33M is subdivided into three
groups: '
First group routine maintenance performed after 1,000 cycles,
. or once a month.
Second group -- routine maintenance performed after 3,000 cycles,
or once every three months. The work performed for this group should
include the routine maintenance work of the first group.
Third group -- routing maintenance performed after 6,000 cycles,
or once every six months (before summer and winter operations).
Routine maintenance work of the first 'and second groups are
performed simultanebusly,with work of the third group.
After 1;000 cycles or once a month:
.Inspect and clean the command instrument, film holder,, camera,
drive and air pressure unit, check the tightness of the screws
securing the mechanisms. If there are traces of corrosion on metal
parts, remove 'the parts and Smear a thin layer of yellow petrolatum
on those layers of the parts' which do,not contact other parts.
Apply a thin layer of special 2TsKP non-freezing lubricant on
'those areas of. the contact surfaces of worm and spur gear drives which
are subject to corrosion.-.
Perform the following maintenance on individual components:
-67-
No F9reign Dissern
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Command instrument (KPU)
50X1
/
1. Check the turning of the setting dial for seizing or jerking.'-
' 2. Inspect-and, if necessary, clean the contaCts of the command
instrument.
3. Inspect the frame Counter.
4, Check the .tightness of the electric motor mounting.
5. Check the operation of the hinged lever.
6. Check the electrical circuit of the command instrument for
short circuits. Before checking, disconnect the wires which connect
to ground.
7. Check the'opertion of the command instrument under current.
Film holder
1. Check the operation of the friction clutches on the axles of
the take-up and supply spools using the spedial accessories and
adjust them.'
? 2. Check the operation of the cog gearing for jerking and seizing.
3. Check the conditiOn-and smoothness of travel of the slide
plate in its guides.
4. Inspect and, if nedessary, clean and adjust the signalling
contacts of the film advance mechanism.
5. .Check the condition of the Sealing around the film holder table.
The sealing must be flat and tight.
.6.- Check the operation Of the catches which hold the semi-axes
of both spools. :
7. .Check the electrical circuit of the film holder for short
circuits..
..8. After placing the film holder on the camera, check the
reliability of engagement:of the end Coupling al' the vertical shaft
by engaging and disengaging it with the slide :plate.
-
S-E-C-R-E-T
No Foreign Dissem
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50X1
- Check the 'reliability-of.operation of the coupling On the sprocke..
rolleruSin the manual drive.
Camera, drive, and air pressure assembly
I Check for synchronous operation of the shutter and safety covers.
2. Check the electrical circuit of the drive and air pressure
assembly for short circuits.
3.. Inspect and, if necessary, clean and adjust the RDT contacts
which turn on the electric motor, the AKKFU mount, and the recording
lights, as well as the moving contacts which signal advance of the
film.
4. Check the reliability of connection of the Cardan shaft and
the telescOping shafts.
? 5. Check the condition of the flexible hose.
Wash the outer surfaces of the camera lens, the lenses of
the recording instruments, and, if necessary, the light filters with
refined alcohol and wipe with clean flannel.
7: After performing rOutine'maintenance on the individual
components Of the camera, cheCk mechanical adjustments Of the camera
and its operation under current,
[Translator's note: two. pages of original document missing.]
. . . should be stored in receptacles in the storage.box and removed
just before placing them on the lens.
If the camera is to be stored for a long period of time, loosen
the springs on the shutter after setting the shutter at maximum exposure.'.
Loosen the spring of the hinged.lever.in the command instrument after
placing the setting dial at the 2-second time interval. If.the
camera has been subjected to sharp temperature changes, do not remove
(wipe off) the moisture. which has appeared on its parts, but allow them
to dry and then wipe all parts of the-cappra with a clean dry cloth.
The lens should be. wiped off Only with a flannel cloth.
If the aircraft is to be. inactive for a long period of time, the
camera must be removed from the aircraft.
No Foreign Dissem
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?- 10, Preservation of. the AFA-33M for Storage
The AFA-33M camera is preserved for the purpose Of protecting
the metal parts against corrosion during periods of transport and
storage.
.50X1
Preservation is applied to unpainted surfaces (unfinished surfaces
and surfaces with oxide or galvanic coatings).
Preservation guarantees the AFA-33M against corrosion ;or a
period of two years if the following storage conditions arelbbserved:
1. The storage area must be dry and the relative hUmidity not
more than 70%. ?
2. The air temperature in the storage area must be within limits
of*5? C to +25? C.
3, Storage of the instruments near heating furnaceebt windows
on the sunny side of the building is forbidden.
4. It is tOrbidden to store acids, alkalies,iand other chemical
substances which might cause corrosion in the sametoragOirea as
the instruments.
After two years from the time of preserving,the AFA33M, it is
required that the camera equipment undergo re-preservation :: Preservation
and re-preservation must be carried out in a dry' Aust-free%room.
The following preservative substances are used:
1. Yellow petrolatum GOST 3581-47 for application to parts made
of steel and brass, with or without galvanic coatings; and 'units of
the spare parts and tools set.
2. Special lubricant.2TsKP (standard factory specifications 0-9)
for internal parts and. components subject to friction.
Preservative substances must be stored ip tightly- elbsed metal,
glass, plastic, .or porcelain vessels.
There must be no acids, alkalies, or.Otherchemical materials in
the room where the preservative agents are stored. The-pre'servative
substances must have an .OTK [technical inspection section] 4E).tipg in
accordance with GOST'standarde,
-70 -
S-E-.C-R-E-T
No Foreign Dissem
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50X1?
? Preservative'is.applied. to the camera equipment in the following
manner: parts to be preserved are wiped with a cotton or gauze pad
/ . ?
moistened in aviation gasoline to remove dirt, dust, and grease from
the surfaces. In re-preserving the AFA-33M, all parts are first wiped
with aclean dry clOth and then with aviation gasoline.. The surfaces
should not.be touched by'hand after this..
After the gasoline has completely evaporated, the eXterior parts
and; units 'should be Coated with yellow petrolatum using a soft cloth
specially intended for this purpose or a pad of soft material.
The preservative may be applied by two methods:
a) Where it is .stipulated below' that the parts are to be "rubbed,"
lubricant is applied witha clean cotton cloth moistened with the
appropriate lubricant, using a rubbing method: The lubricant may be
applied with a clean, stiff hair brush and then rubbed with a cotton
cloth. The lubricant must be applied in'a thin continuous layer.
b) Where it is stipulated below that t.re parts are to be "smeared,"
the lubricant is applied 'with a soft hair brush or a pad made of soft '
material. ?
The lubricant is applied in a melted state, whereby it is heated
on a heater with a covered electrical heating element to a temperature
of 45-55? C. The layer, of lubricant must be flat, without discontinui-
ties or air bubbles, and .should have a thickness of approximately 0.2
to 0.5 mm.
Preservation of instruments before storage is carried out by units
(the command instrument, the film holder, the camera and cone, etc.).
A.. Preservation of the command instrument
1. All exterior, unfinished parts and fastenings are smeared with
yellow petrolatum.
? 2. Lubrication, is not applied to the sockets for the plug
connectors.
B. -Preservation of the film holder
1. Remove the Cover of the film holder.
2. The unfinished .parts within the film holder should be
rubbed with special 2TsKP lubricant.
e.j
-11 -
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3. Tha.'lever,of the film length counter and the fastenings on 50X1
the insidel the. Cover should be rubbed with special 2TsKP lubricant.
4. Close the cover.
5. All exterior unfinished surfaces of parts and fastenings should
be smeared.with yellow.petrolatum.
NOTE: 1. The bottom of the film holder should not be covered
with lubricant.
2. Only exterior parts should be subjected to re-preserving. Do
.not remove the cover.
C. Preservation of the camera and cone
1. Remove the cover from the camera and the hood from the cone.
2. Smear the pins in the lens unit and the screws holding the
lens with.yellow.petrolatum.
3.. Smear yellow. petrolatum on exterior unfinished parts having
galvanic coatings or which are simply polished, and on fastenings.
4. Do not apply preservative to internal parts of the camera.
5. Do not apply preservative to the socket for the plug connector.
D. Preservation of the drive and air pressure assembly
1. Smear yellow petrolatum on exterior unfinished parts having
galvanic coatings, and fastenings.
2. Do not apply preservative to the socket for the plug connector:
E. Preservation of light filters
Smear the springs and screws with yellow petrolatum.
F. Preservation of electrical cables
Smear the external fittings with yellow petrolatum.
s-E -c -R-E-T
No Foreign Dissem
I)
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? .G, Rreserliation. of ZIP [spare parts and tools] parts
1. All unfinished metal parts (accessories, wrenches, punches,
etc.) should be smeared with yellow petrolatum..
. 2s. ZIP parts which are stored in bokes should be wrapped in
.clean paper moistened with the appropriate lubricant or in parchment.
H. Preservation of boxes.
50X1
All fastenings and locks should be smeared with yellow petrolatum.'
After two years , from the time of preserving the aerial camera
the camera must undergo re-preservation. This is carried, out as
follows: all exterior metal parts are first wiped with a clean cloth
moistened in aviation gasoline.
Upon evaporation of the gasoline preservation is carried) out in
the manner described above.
Before. placing the camera into operation, all exterior parts must
be wiped with a dry cloth, for the purpose of removing the excess
layer of preservative material.
III. Characteristics of Lubricants Used for
Preserving the Aerial Photographic Equipment
Physical-chemical properties of yellow petrolatum
1. Dropping point in ?C. 37 - 50
2. Viscosity at 60? C
a) kinematic not less than 11.0
b) corresponding conditional
viscosity in Engler degrees ...not less than 2.0
3. Acid. number'in mg KOH per 1 g petrolatum .not more than 0.28
4. Ash cOntent in 0 not more.than 0.03
Water content .. none
Content of mechanical. impurities in 9/10 . . not more than 0O25
-73-
S-E-C-R-E-T
? No Foreign DiSsam'
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Content of water-soluble acids
and ..ailkalies
Composition:
NOTE: 1 .Solidification-point of MVP liquid petrolatum not
Special lubricant 2TsKPa ?
liquid petrolatum .MVP
76%
high-melting ceresin
22%
bone oil*
2%
none
higher than 640C.
2.? Bone oil -- top grade.
Physical and chemical constants
1. External appearance -- Vaseline-like, homogeneous viscous grease.
2.- Color -- pale yellow.
3. Dropping point -- 650 C.
4. Water content in % -- none
5. Content of mechanical impurities none.
6. Corrosion test -- satisfactory.
7. Content of water-soluble acids and alkalies none.
8. Acid number in mg KOH -- not greater than 0.2.
9. Freezing temperature in 0C -- not higher than 60.
.IV, Malfunctions in the Operation of the Aerial
'Cametaand Their Causes-
The following are malfunctions* in the aerial camera which cannot
be remedied without-special equipment:
1. Faulty shutter.
2. Cracked lens (excessive chipping
5.0X1
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s-E-C-R-E-T
No Forei0i Dissera
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Poor image as result of defocusing.
The fcdlowing malfunctions in the operation of the camera may be
remedied in part: ?
Nature of Malfunction
No.
2
Cause of Malfunction and
Sequence for Correction
3
50X1
Order orElim-
' inatingFault
L.
1 NPU motor. or camera ,Motors
do not operate when equip-
ment is connected to elec-
trical circuit.
With camera connected to
electrical circuit, KPU
motor operates but pulse
is not received by camera
3 Operating cycle of camera
exceeds 2 sec with 26 v
in supply circuit
4 Current consumption of
AFA-33/20M, 50M, 75M, and
? 100M with 26 v in supply
circuit exceeds '13.5 a
5 On processed film from
AFA-33/20M, 50M; 75M, and
100M, one photo is normal.
and next is overexposed
or underexposed,
Mechanical alignment of
camera is disturbed
7 Image of clock, level, and
counter on photo too dense
(cloudy)' or faint
a) Faulty fuse
b) Faulty electrical cable
c) KPU contacts do not close
d) KPU motor fatlty
e) RDT contacts do not close
f) Electric motor faulty
Polarity not observed when
connecting into electrical
circuit
Faulty electric motor
a)_ Faulty electric motor
b) Electrical wiring grounded
c) Jamming of camera
mechanisms
d) ?Short circuit in wiring.
Faulty shutter
a) Incorrect adjustment of
cam which exceeds opera,
ting cycle of camera
) Break of key or cotter '
in kinematic link
Incorrect adjustment of
contact cam 43 of record-
ing lights
- 7S?
No Foreign Dissem
replace
see page 77
see page 78'
see page 78
see page 79
see descrip.
of MA-40A
see descrip.
of MA-40A
?
see page 79
See page 79
see page 79
see page 80
see page 80
seepage 80
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S-E-C-11-E;-T
'No:?Foreign Dissem
50X1
1
3
. 8 When operating,with.the
AFA-33/50M,.75M;and.100M
pressure in camera is less
than 130 mm.1.10'at supply
voltage of 23.4 .v -an less
than 110 mm in AFA-33/20M
Light illuminating record-
ing'instruments does not
go on. ?
9
10 Reduction gear clutch
slips when operating camera
11 Loops form in film in front
of take-up spool
12 Jerking or seizing during
transmission. of motion by
cog gearing
Slide plate jams in guides
14 Film will not pass under
metering roller when. load-
ing film holder.
? 15 End couplings of -film
holder. become disengaged
during operation of
camera
16 Semi-axis of spool
cannot be released. ?
a) Speed of' blower eleotric
motor has decreased
See descrip.
of MA-40A
b) Camera not hermetically.
sealed ? see page 85.
a) Lights have burned out
b) ,Contact springs bent
see page 84.
see page 84,
Spring of friction clutch
in reduction gear is weak see page 85
Friction clutch spring of'?
take-up spool is weak. See page 81
Seizing in ball bearing of
film holder transmission
gears see page 81
Guides damaged; edge of
slide plate broken or bent see page 81
Comb guides of film holder
are damaged see page 83
Teeth of coupling 213 see page 83
broken
'Seizing in sleeve in *center
. of spool as result of corrosion
of semi-axis see page 83
17 Film length coUnter does Lever of film counter is
not operate 'catching in semi-axis
18 Catch Ofsmetering roller
does not operate .
see page 84
Spring of catch lever is
broken see page 84
- 7c, -
S-E-C-R-E-T
'
No Foreign Dissem
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S-E-C-R-E7T ?
No Foreign Dissem
50X1
1 / 2
3
4
19.Fiim advance signal sys-
tem on KPLT'does not ?
opetate (light does not
-.burn or burns but does
not flash) ?
20 Time intervals of IU
differ from actual measur-
ed intervals .(more than 11
or less than 9 sec when set
at 10.sec)
21 Light does not burn when
switch is in position
"Observation of Bombing"
22 Oscillations of AKAFU
camera mount not matched
with operating cycle Of
camera
a) Bulb is burned out
b) Signal contact in film
. holder is faulty
Governor contacts in KPU2"
are out of adjustment or
burned out
Pawl on hinged lever in
KPU2 broken
replace
see page 81
see page 82'
see page 82
Contacts of electromagnet ?
in IU are faulty see page 78
a) Incorrect adjustment of see page 85.
AKAFU pulse cam
b) Threads of set screw are
broken or screw not all
way in see page 85.
When a malfunction is detected in the operation of the aerial camera,
the cause of the detected malfunction should be determined and, in
accordance with the order for correction of malfunctions noted below,
the necessary repairs should be carried out.
If the cause of the malfunctionhas not been established, do not
attempt ?tO *disassemble the camera.
?
V. Order for Correction of Malfunctions
.Before beginning any .repair, disconnect the camera from the electri-
cal circuit. ? ?
Malfunction of the electrical cable
*Malfunctions of the electrical cable may be caused by: broken
conductors,.. short circuiting between condudtors, and short circuiting
between the conductors.and the metal shielding of the cable.
Faults may be detected :by testing the cable in an electrical
'circuit; then correct thedetected malfunction.
-11-
. S-E-C-R-E-T
No Foreign Dissem
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' S-E-C,R-E-T
NO Foreign Dissem
.Contacts of the KFP do not close (Figures 26 and 27), 50X1
Normal/ operation of the contacts may be disturbed by burning out.
?of the contacts.
? This defect may be corrected by.removing.three screws 186, removing
setting. dial .151, opening the two catches 187,. and carefully opening
coyer 153.. Then Clean.the.contacts using sand4aper. After this.
replace the cover and dial, replace the three screws, and check the
operation of the KPU..? /
Electric motor of the IU is faulty (Figures 26, 27, and 28)
Malfunctions in the electric mOtor may be caused by: .
a) poor contact between the brushes and the commutator;
b). dirty commutator.
If there is poor contact between the brushes and the commutator the motor
will' not operate altogether or will operate at a reduced speed with spark-
ing. If the' brush is. held down the motor will begin to operate normally.
:The following 'procedure should be used when fitting the brushes
.against the -commutator and cleaning the commutator in the KPU motor:
1. Remove the three screws 186 and setting dial 151. '
2. OPen the two catches: 187 and carefully tilt back cover 153.
3. Unscrew the?caps located at the ends of the motor and remove
the brushes from under the springs (see Figure 28). If the brushes are
damaged, smooth their ends with fine sandpaper and replac\e them in the
motor.
It is recommended that this operation be performed. with a device
in the form of a steel washer, inserting the brush in the opening. The
height of the washer. must be somewhat less than that* of the brush so
that the brush can be held by the ?fingers when sanding it. '
? The brush may be considered properly ground if the contact between
the surface of the brush and the commutator is not less than 70% of the
Working.surface of?the brush.
The' 'following must be?done in addition when cleaning the?commutator;
aY' unacreW the?two.detainers and remove the motor from base 172; -
b) unscrew the two aide screws in the motor and remove front
plate 282;- -
-.7E3- ?
S,E-C-R-E-T
Jib Foreign Dissem
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S-E-C-R-E-T
No Foreign DisseM
50X1
? c) .without 'removing armature 279 from housing 276 (so as not to
.demagnetize/the. magnet), clean commutator 230 with a clean rag soaked
. in V-70 benzene.
After'sandingthe brushes and cleaning the commutator, reassemble
and test the operation of the-motor.
: The'RDT.contacts do not close
The cause of a.malfunction of the EDT contacts mar be their
burning. This maybe corrected by cleaning the contacts with sand-
? paper and, if necessary, adjusting the gap between them. Access to
.the EDT is- provided by unscrewing two screws and removing the cover.
Short circuit in electric wiring
? If the wiring has made contact with the frame (with the exception of.
contact with the negative wire of the circuit), a short circuit will
occur which will burn out the fuse.
To correct this fault it is necessary to disconnect the camera
from the electrical_netWork and check the wiring in the circuit with
an ohmeter.... Visually determine the short in the faulty section and
correct it:
Electrical contact between conductors and frame
In the event of. shorting of conductors to the.frame, determine
the location of the .short .(with the exception of the. Command instru-
ment KPIJ,) by connecting one of the 26-volt line conductors to an
unpainte8.-spot 'on the chassis of the instrument. A 30-volt, portable
voltmeter or a 26'-volt lamp is connected to the second line conductor.
The other lead of the Voltmeter or lamp is connected in turn to
terminals of the terminal block. After locating the short and
correcting it, check the wiring once' again. There should now be no
sharp deflections of the pointer of thevoltmeter and the lamp should
not burn out.
" Jamming of the camera mechanism
If the camera mechanism is jammed, the pointer on an ammeter will
show a 'sharp jump in current consumption and the camera will fail to
operate. The. camera' should be quickly disconnected from the electrical
network.' if the'cause'of the jaMming cannot be determined- in
-
S-E-C-R-E-T
No Foreign Dissem
nRcIassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-1.1-E-T ?
.? No Foreign Dissem
? . ?
inspection or if a correction cannot be made, the camera should be 50X1
sent to an air force shop or a plant representative should be called.
' Malfunctioning of the Shutter
If the shutter rails to. operate properly then send the aerial
camera for repair, to the air force shops or call the factory
representative.
Improper Adjustment of the Cam which Interrupts the Operating
Cycle or Camera AFA (fig. 8, 9, 10)
Cam 42 may fall-out of adjustment due to shifting of its
position. on the shaft.'
The cam may be. shifted due to improper fastening to the shaft.
To correct this situation it Is necessary to carry out the following
operations: remove the jacket covering the contact cams and fasten
contact cam 42 of the camera in such a manner that the camera cycle
would end at the instant of maximum lift of the cassette table..
If the stopper thread has been damaged, unscrew the shelf nuts,
.remove cams. 43 and 288, and then cam 42. Cut a new thread and
replace the stopper. Place cams back on the shaft, and adjust their
position according to the table of mechanical adjustment.
Shearing of. Cotter or Key in- the Kinematic Link
The sequence of mechanical alignment in the aerial camera is. ?
disturbed if a key or cotter becomes sheared in the kinematic link
of AFA camera. In such a case the camera should be sent to the
air force repair shops, or the.factory representative should be
called.
Improper Adjustment of Contact Cam 43 of the Recording Lamps
(fig 8, 9, 10)
For the adjustment of contact cams the following operations should
be carried out: remove the:jacket of the contact cams and fasten the
cam engaging the recording. instruments in such a manner that the
'lamps would glow at the instant- when the film is leveled.
- -
S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-E-T
- No Foreign Dissem
- Friction-Clutch Spring of the Takeup Spool Has Weakened
.(fig 23) ?
To correct this defect do the following:
a) remove the cover of the cassette;'
b)-remove the stopper 'holding nut 194;
c) tighten spring/196_with the nut and check the friction
clutch tension with the aid of a special device which is included
among the accessories.
This device is placed over the housing of clutch 191 and the
load is set at the nearest mark (smaller arm).. With this position
of load the friction clutch should not move. When the load is
shifted to the farthest mark the friction-clutch should begin to
rotate. After this the .stopper on nut l94 must be fastened and, the
operation of the cassette loaded with film should be tested.
Seizing in the Bearings of tIBCassette.Transmission Gears
When this defect is observed send the aerial camera to the air
force repair shop or call the factory representative.
Malfunctioning of the Guide; the Corner
of' the Slide Plate is Torn or Bent
50X1
To correct this defect replace the slide plate by a new one taken
from, the spare parts; 'The new guide slide plates should first be
washed and. lubricated with?non-freezing lubricant.
Signalling .Contact in the Cassette is Malfunctioning
(fig. 20)
To repair the contact for signalling film advance proceed
as follows.:.
ay remove the screw from the shaft of mechanical Signal .device 230;
b) remove ,the Mechanical signal' device;
. c,) remOve fournuta with a wrench (for round nuts) which is
included in the tooLkitand remove the housing;
-
S-E-C-R-E-T
:No Foreign-Dissem
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3-E-C-R-E-T
No Foreign Dissem
- d). bend' _contact plates K7 in such a manner that dU4ng the 50X1
rotation of /the spool center, with camera AFA 'connected to the -power
? ?
line, the signal, lamps of KPU2 will flicker;
e) If the.contactsare'bUrned they must be cleaned with sandpaper
and then adjusted in such a manner that the clearance between them
'should- be not'less.thap?0.5.mm.
. Contacts of the 'RPM Regulator (for KPU2) are Improperly
Adjusted or Burnt. (fig. 27, 29)
If. the dial is. set for 10 sec while the true measured time
interval is.found to be either greater than 11 sec or smaller than
9 sec, then Such irregularities are either due to misadjustment or
burning of the contacts of the centrifugal RPM regulator 259 of the
KPU electrid motor (fig 27).
Tb remove such a defect it is necessary to:
a) remove three.screws:186 and take off the setting dial 151;
b)' open two locks 187 and swing upward cover 153;
c) clean contacts K3 with sandpaper;
d) on theflat.portion of the gear 252 engaging the worm make
a mark with white paint or glue on a white paper circle. Connect
the KPU2 to the power line and count the rpm of the gear engaging
the worm. With proper adjustment) thegear should rotate at 90. to
98 rpm;
e) by rotating the stopper screw located on the regulator
opposite the contact bring the gear speed to. the indicated limits.
Wear Of the Pawl of the Swing Lever of KPU2 (fig 29)
If the pawl tooth 305 'of swing lever 304 become excessively
worn, then the KPU2 will form incorrect intervals, not corresponding
to the settings of the' dial.
To.eliminate this defect the KPU2 should'be sent.to.a repair
shop or.the.factory 'representative called.
-
. S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-ET
? No 'Foreign Dissem
Malfunctioning of the Cassette Guide Comb
1
? If during loading the leading end of the film. does not emerge
from, measuring roller 215, then one or several teeth-of the guide
comb might have been bent.
50X1
To 'eliminate thiS defect perform the following:
a) remove the key.. holding together the measuring roller shaft and
the bushing;
b) remove the screws fastening the bushing;
c) holding the measuring roller by the left hand remove the
bushing;*
d): remove the meaSuring roller;
e) straighten the bent teeth;
? f) now replace the roller and other parts in the reverse sequence
and check the ease of threading the film.
Wear Of the Clutch Teeth 213
? To correct this defect send the cassette.to the air force
repair shop. or .call the *factory representative.
Seizing of the Spool Center Bushing Due to Corrosion
of the Semi-shaft
To eliminate this defect perform the following:
a) remove the screw which fastens the handle to the semi-shaft;
b) unscrew. the handle;
?
c). remove the semi-Shaft from the bushing;
0-clean with
..sandpaper or fine file the semishaft and the
. bushing ? and wash them.with'benzene;
e)? lubricate the zhaft and bushing with non-freezing.lubricant;
f) assemble the reel center in the reverse sequence.'
1
No Foreign Dissem ?
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S-E-C-R-E-T
No Foreign Dissem
.-,Seizing of the Lever Semi-shaft of the Film Meter.
50X1
?
To eliminate this defect do as follows: '
? a) remove the spring from the lever shaft;
b) unscrew.the shaft;
c) remove the lever;
d). with a very fine file clean the lever bearing of the semi-
shaft;
e) clean the lever hole.with a file;
f) wash the semi-Shaft and the lever hole with benzene and oil
them with non-freezing lubricant found in the supply kit;
g). reassemble the lever with the semi-shaft in the reverse
secinence. During the assembly see that the lever (with the roller)
spike rests on the body of the driving gear' (during meshing with the
rack)and that the pointer is set at zero.
'
.Spring of the Lock Lever.is Torn.
'When the lock lever'spring is torn, the lock of the measuring
roller fails to work because the pawl is not able to hold the lever.
To eliminate this defect it is necessary to coil a new spring in
the shop and to mount it on' the lock lever in the cassette.
- Burn out of the Illumination bulbs
If a burn out Of the' illumination bulb ocaurs than proceed as
follows:
a). remove the hood and the base with the bulb from the receptacle;
b). replace the old bulb with a new one from the spare parta;
c) 'install the.neW base with the bulb and replace the hood.
Contact' Springs Become Bent
To.eliMinate this defect remove the bulb hood, pull the base
.with the bulb .out of the receptacle and bend slightly upward the
contact springs with a screwdriver. Then replace the bulb and the
hood..
234 -
S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-E-T
:No Foreign Dissem
?TheFriction7Clutch Spring of the Reduction Gear Become Weak 5,0X1
? To eliAinate this defect remove the hood on the .reduction gear
housing and tighten the'nUt controlling the spring tension of the ,
friction gearsothat the torque on the output shaft would be within
the limits of 22.5 24 kg/cm. .Then test the camera during operation,
and if the clutch operates normally, without slipping, replace the
hood. ?
,Camera has Lost Its Air Tightness.
To eliminate this.defect place the cassette on the camera, put
the camera into operation andiviitcne. hand feel the junction places
between.the register units with the camera, between the lens hood
and the cone for possible air leaks: Place some putty over the air
leaks. After the air. leaks have been eliminated, check the air.
pressure with the aid of a manometer during the operation of the
camera; such a pressure should be not less than 130 mm W. C.. at
23.4 v for cameras AFA-33/504, 75M, 100M, and not less than 110 mm
for. AFA-33/20M.
Improper Adjustment of Pulse Cam.of AKAFU Mount.
(fig. 9,,10)
.Maladjustment of cam 288 may occur due to the shifting of the
cam on the shaft.'
The cam may shift if it is improperly fastened by the lock
screw to theshaft (it case the thread is worn or damaged).
In this case the timely delivery of pulses to the AKAFU mount
will be disturbed. To eliminate such a disturbance remove the jacket
which covers contact cam. 288 and fasten the cam in such a 'position
that the current pulse would arrive at the AKAFU mount not earlier
than 0.5 and not later than 1.5 turns of the camera.drivecrank
1
after each exposure.
The Lock Screw is. Insufficiently Tightened or its Thread Damaged.
If the screw thread' is stripped, remove the nut, take off cam 43
which closes the contacts?ofthe recording instruments, and then
remove cam 288-which supplies Current Pulses to the AKAFU mount. Cut
new threading and a4jUst the screw. Replace the cam on.the shaft,?
adjust the position of the cams according.to instruction in paragraphs
5 and 8 of the.table,for mechanical alignment. "Fundamental Adjustment
and Technical Data". Then replace the jacket and fasten it with
screws.
EsS
S-E-C-R-E-T
NO Foreign Dissem
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
? S-E-O-R-E-T
No Foreign Dissem
INSTRUCTIONS
Handling of Coated Lenses.
The.surfaa:s of lenses are coated to reduce loss of light due
to reflection. The uncoated lens surfaces generally reflect about 5%
of incident light,?whilesthe:coated lens reflects less than 2%.
The AFA camera lenses are coated chemically.
The coating is softer - than the lens glass, therefore the coated
lenses should be handled with great. care.
Duston the coated lens can be removed with a brush. ?
? Non-greasy spots can be removed by light rubbing with clean
flannel cloth or chamois.
Greasy spots (finger prints, etc.) should be removed with a
flannel cloth wetted it absolute alcohol or ether, but rubbing
should be avoided.
Moisture has a detrimental effect on the coating and in time
may totally ruin it...
To preserve the lens coating protect it from being soiled so
that less cleanitg:will.be needed.
INSTRUCTIONS
Maintenance of Electric Motor Type MU-010
Lubrication With oil O}-l22-5 ensures satisfactory
performance of the electric .motor ball bearings for the guaranteed
:life time.
2. The motor has round brushes with sealed covers.
During operation it. is not permissible to unscrew the
brush covers at.d to remove the brushes, because replacing of the
removed brushes will .require new adjustment and possible, additional
grinding of the brusheS to fit the commutator.,
50X1
- 86 -
S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-E-q ?
:No?Foreign Dissem.
3. For examination of the commutator and brushes remove the
.motor cover/without removing the brush cover) for which purpose
first make a line mark on the frame and the brush; then remove two
screws which hold. the cover.
50X1
4. After expiration of the camera guaranteed service period it
might be necessary to carry out the following operations: disassemble
the motor, remove carbon dust, replace or grease the ball bearing
located on the commutator side, and replace brushes with subsequent
testing of the motor.
5. Disassembly of the motor is carried out in the following
order:
a) Loosen the terminal screws and disconnect the ends of the
wires.
.b)_Loosem_the:capacitor screws an& remove the capacitor. The
capacitor is located on the side of the motor panel.
c) Mark the position of electric motor in the recess of the
command instrument to ensure proper reassembly and prevention of
motor overloading. Improper assembly of the motor will place an
overload several time larger than the rated load on the motor.
d) Unscrew the lock .screws and remove the motor from the
command ?instrument receptacle. The flange of the coupling clutch
should not be removed from the motor shaft so that the armature may
remain in the motor and thus prevent partial demagnitization of the
.permanent magnet,
e) Place a line mark on the frame and cover of the motor to
ensure proper reassembly, then unscrew the fastening screws and '
remove the cover. ?
f) Remove the compensating washers from the ball bearing
receptacle in the cover.
g) Unscrew the brush covers and remove the brushes.
6. Removal: of :the brush. (carbon) dust is carried out as follows!
a) With a dry, and clean rag wound on a wooden pin or. wire (the.
rag being' folded twice) remove the brush dust from the inner wall of .
the motor frame.. In this 'Operation the motor should be tilted with
commutator downward,
-
S-E-C-R-E-T
No Foreign Dissem
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S-E-C-R-E-T
No Foreign Dissem
b) With a clean .:rag wetted in benzene and wound on a wooden pin
or a wireirpb the commutator and inner walls Of the motor frame. In
.this operation the motor should be tilted with commutator down.
c) Wash the b.S11 bearing without removing it from the:shaft.in
pure benzene by 'dipping it carefully Several times into benzene and
rotating by hand., '
,d) Dry the commutator body and the ball bearing until they are
free of benzene.
e) With dry. clean rag remove the brush dust from the motor cover.
7. After removal of the brush dust from the ball bearing
lubricate it with two drops of 0KB-122-5 oil.
8. Reassemble the Motor in a reverse order and install new
brushes. With new_brusheS the adjustment and replaCeent of the
springs is not allowed, ' The ribbon connecting the brush with the
nipple should' be intact.
9. To replace the Motor in the command instrument perform the
following operations:
50X1
a) check the resistance of motor insulation with a 500-v
megohmmeter. Insulation resistance should be not less than 20 Megohms.
b) Grind the new motor brushes 'and run the motor at idle speed with
terminal voltage at 20.v for 30 min. After this do not unscrew the .
brush covers. ?
c) Test the idle run current of the motor with new brushes at a'
terminal voltage of 26 v. Such an idle run current should not exceed
0.15 a. There should be.no. sharp oscillations of.the voltmeter
pointer.. Presence of such oscillations would be indicative of poor
contact between the brushes and the commutator.
.10. The electric: motor should be replaced precisely into its
former place in the receptacle, of the command instrument to ensure
proper Connection to the oouplingolutch and to avoid possible
overloading of the motor. .
? ?
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
No Foreign Dissein
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T ?
No Foreign DisseM.
-INSTRUCTIONS
Restoration of the Selenium Rectifiers.
? , ?
-During the exploitation of the camera deterioration of the
semiconduCtor layer. Of the selenium pile rectifier of KPU2 is
sometimes bbserved',. which results in leakage of current in reverse
direction to the motor'of the drive and blower assembly. Such a
dethrimmted rectifier?Can be restored by forming with de or.ac
current ata voltage of. l.56o v without disturbing the instrument
wiring.. For this purpose one end of the wire is connected to lamp
L3 contact. (the lamp which signals the advance of the film), while
the other end is connected to pin 3 of the plug-and-socket Connector
ShR32P12ESh1 .(fig 43). ?
During electric 'forming with dc current the plus line is
clonnecteci to the lamp and the minus to pin 3 of the connector.
? The 'voltageshould be raised gradually during 3-5 min interval
from 0 to 45-60 v.
The electric forming is completed when a. characteristic cracking
noise appears in the selenium pile when 45-60 v have been applied.
50X1
To test the full restoration of the selenium pile, i.e., complete
prevention of reverse leakage current, perform the following:
. 1. Connect the 26-V power supply to the camera with cassette,
the drive and blower assembly, the KPU2 and the connecting cables..
2. Place the KPU2 switch in position "Bombing
the dial index on any number opposite "T bombs", but not
50 sec
3. Press button "Start" (KPU2) and rotate the film.
in the cassette..
Control" and
higher than
.supply spool
At this time the drive and blower assembly motor should not be
in operation.
- 8 9 -7
S-E-C-R-E-T
No Foreign Dissem
tC I .
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-c7R-E-T
.No Foreign Dissem
LIST OF DESIGNATIONS FOR THE ILLUSTRATIONS
_ .
1. Camera housing (fig.- 4,.6)
. 2. Attachable.frameAfig, 4,6)
? 3, Lock plate.(fig. 4, 6):
4. Guide pin (fig'. 4, 6)
5. Recording device -.7 clock (fig, 4, 6)
6. level (fig. 4, 6)
7. ." It - -;counter (fig. 4, 6)
8. Reduction gear motor (fig, 31, 32)
9. Nipple (fig. 5).
10. Trunnion (fig. 4, 5, 6, 7)
11. Camera receptacle (fig. 4, 5, 6)
12. Drive mechanism (fig. 6, 4) ?
13. Objective (lens) section (fig. 4, 6)
14. Cardan shaft (fig. 8, 9, 10)
15. Entry shaft (fig. 8, 9,.10) -
16. Worm-gear of the.drive nechansim (fig. 8, 9, 10)
17. Gear meshing the. worm .(fig. 8, 9; 10)
18. Horizontal shaft (fig. 8, 9, 10)
19. Bevel gear (fig. .8, 9, 10)
20. Bevel gear (fig. 8, 9, 10)
21. Sleeve (fig. 8, 9, 10)
22. Driving pin (fig. 8, 9, 10).
23. Bevel' gear (fig. 8, 9, 10)
24. tt ft
25. Shaft (fig'. 8, 9, 10)
26. Bevel gear (fig. 3, 9, 10)
27. H II
28. Housing for the drive and blower mechanisms (fig 31)
29. Blower motor (fig. 31, 32)
30. Air turbine blower (fig. 31)
31. Reduction gear for the drive and blower unit (fig. 31)..
32. Flexible hose (fig, 1,' 2; 3)'
33. Intermediate shaft .(fig. 8, 9, 10)
34. Bevel gear (fig. 8, 9, 14)
35. II II It
36. Spur gear
37. ft It
38. ftII
39. Spur gear of the counter (fig. 8, 9, 10, 11)
0 40. Shaft of the' camera counter (fig. 8, 9, 10, 11)
41. Contact disk for switching-on of the motor (fig. 8, 9, 10) .
.42. Contact' disk (fig. 8, 9, 10)
43. Switching-on contacts of the motor (fig. 8, 9, 10)
44. Switching-on contacts for the lamps of recording insttuments
(fig. 8, 9, 10)
?
45, Reduction-gear worm of the drive mechanism (fig. 8, 9, 10)
S-E-C-R-E-T
No Foreign Dissem
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
No Foreign Dissem
-.0X1
46. Gear meshing the worm of the drive mechanism ( fig. 8, 9, 10) ...., ,
.47. Gear of?the?drive mechanism reduction-gear (fig. 8, 9, 10)
48. t, / 11 41 - 11 ? It II ft
49. Safety cover .(fig. 9, 10)
50. Roll (fig. 9,10)
51. Disk ( " " .) ?
? .
52. TeleScoping Shaft (fig. .8, 9, 10)
53. Gear actuating the shutter (fig. 9, 10) in AFA-33/50M, 75M, 100M '
54. Counter.drum of the camera (fig. 11)
55. It Ti . II .11 . 11 It
56. t, . . II ? 11 II 11
57. Winding gear of the shutter "Zhalyuzi" (fig. 9, 10, 17, 18)
58. Shaft of winding mechanism of the shutter "Zhalyuzi"
AFA-33-5014 (fig. 9, 17)
59. Pin (fig. 9, 10)
60. Drum of the camera counter (fig. 11)
61. Auxiliary driving gear of the counter (fig. 11)
62. . ts 11. IT -it
63. Rack Rack (fig. 9, 10) ?
64. Gear of the safety covers AFA-33/50M, 75M, 100M (fig. 9, 10)
65. ft ft II 11 . ' If IT Ti . ft It
66. Shaft 1t II. If Ti It It , ? tf tt
67. . II li ft 11 It II It It It ' ft
68. Spring (fig. 9, 10)
II
.,,
.160. Continuous-operation- switch (fig. 26)
161. Switch for AKAFU operation (fig. 26)
162. Heater switch (fig. .26) ?
163. Lamp ("Current-off") (fig.'26)
164. Lamp ("AKAFt") (fig. 26) '
165. Lamp ("Rewinding of aerial film" and "Ready for photographic
control of bombing") (fig.. 26).
166. Window for the picture counter (fig. 26).
167. Wheel for setting the counter to zero. (fig; 26, 29)
168. Fuse cover (fig. 26) .
169. Terminal box for electric, cable'KPU (fig. 26)
170. Two-pole terminal box .(fig. 26).
171. Dovetail .(fig. 26)
172. Base of the IU (fig.. 26, 27)
173. Cog of the pawl. (fig, 26).
174: Reduction gear shaft (fig. 31)
175. Spring (fig. 26). ' ' .
176. Cotter pin (fig. .31)
177. End sleeve (fig, 31)
178. Nut (fig. 31)
179. First section.of the electric cable fig. 33)
180. Plug of .the connector (fig. 33)
181. Connecting socket (fig. 33)
182. Second section of the electric cable (fig. 33)
-91 -
'No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2913/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
No Foreign Dissem
183. Plug'of the. connectorAfig. 33)
184. Plug of the connector (fig: 33)
185.
/ .
186. Dial screws (fig. .27) ?
187. Snaps for fastening. gOver-to the base of ,ITU (fig. 27)
188. Picture counter '(fig. 27)
189. Electric heater .(fig. 27)
190. Pointer of the counter (fig. 24)
191. Body of the friction clutch (fig. 23)
192. Gear (fig. 23)
193. Shaft (fig. 23)
194. Nut
195. Flange?
196. Spring IT
1.97. Gasket .
198. Rectifier (fig. 27)
199. Electric motor MU-010 (fig. 27, 29)
200. Worm (fig. 25)
201. Drive head of the cassette mechanist (fig. 8, 9, 10, 29)
202. Bevel gear (fig.: 20)
203.
204. Spool cam . ".
205. Gear (fig. 8, 9, 10, 20).
206. Central shaft.( ' )
207. Extension of the? slide plate (fig. 20)
208. Roller(fig. 20) .
209: Lever
210. Stop rod
211. Fork
212. Fork shaft (fig. 20).
213. End sleeve coupling (fig 20)
.214. Spring of the end coupling (fig. 20)
215. Measuring r011a. (jig.. 20).
216. Spur gear of the measuring mechanism (fig. .20)
217 Ti U ii Ti II ii ?
218. U. 11
219. ? it
220. Supply spool (fig. 20)
221. Guide roller ?
222. Press plate
223. Press roller
224. Take-up spool ,
225. Friction clutch (fig. 20, 21)
226. Drive pin (fig.. 20a, 23)
227. Rotating semi-shaft. (fig. 20).
228. Safety catch .
229. Friction clutch. ft
230. IndicatOr Tt
231. Eccentric
- 9 -
S-E-C-R-E-T
No Foreign Dissem
50X1
_ .
Declassified in Part-Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
Uo Foreign Dissem
232. Reller (fig, 20) ,
233. Spring-2f the pres6 'plate (T141. 20)
234. Return spring ft
235. Bushing IT
236. Spring
'237. Indicator disk with a lug.
238. Contact plates
239: Contact blockjfig 2Q; 22) ?
240. End coupling of the measuring shaft (fig. 20)
241. Lever
242. Lock
243. Indicator* (fig. 25)
244. Hook for disengaging the lock (Fig. 20)
245. Spring ."
246. Step
248. Length counter-(fig. 20) 25)
249. Swing snap Of the' cassette (fig. 21)
250. Connector insert (fig. 33)-
251. Plug for connection to the airborne power line (fig. 33)
252. Gear engaging the worm gear *(fig: 29)
253. WorM (fig. 29).
254. Pin of the reduction gear of the drive mechanism (fig. 31)
255. Case (fig-31)
256. Socket
257.- Gear engaging the worm (fig. 29)
258. Screw holding the bushing (fig 20)
259. Regulator of speed of rotation (fig. 27)
260. Shaft of the shutter winding mechanism AFA-33/20M (fig 14)
261. Mounting frame ofAFA-33/20M (fig 34)
.262. Stud (fig. 34)
263. Cross-bar "
264. Swing clamp "
265. Lock II
266. Adjusting screw fig. 34)
267. Spring .
268. Sleeve
269. Clamp ring
270. Knob ?
271. Wing nut. and .screw "
272. Castellated nut (fig. 19)
273. Pair of idling gears (fig. .19)
274. Catch
275. Washer
276, Electric meter housing
277. Poles
278. Permanent 'magnet
279. ArMature
?280. Commutator 11
281. Brushes
-
No Foreign Dissem
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4 -
S-E-C-R-E-T
No Foreign Dissem
282. Front cover (fig. 28)
283. Brush spring ."
284. Elebtr&agnet.ESBR (fig. 29)
285. Shaft of the Central. Mechanism (fig. 29)
286. Cam washer
287. Auxiliary driving gear of the counter (fig. 11)
?
. 288. -Contact disk for admission of pulse to AKAFU (fig 8, 9, 10)
289.. Contact for. admission of pulse to AEAFU ? n
298. Plastic.cover.(fig. 25).
299. Ring . (fig 29)i
300. Gasket . "
301. Ratchetswheel "
302. Spring. tt
803. Guiding pin. "
304. Swingiplevee
305. Pawl
306. Hinged lever (fig. 5, 6)
307. Heater (fig .13, 16)
? 308. Wiring diagram of the electric cable fig 33a)
309. Reduction gear screws (fig 32).
311. Cover (fig 25).
312. Spring (fig 29)
313. Auxiliary lever. (fig. 29)
314. Pin of the auxiliary lever (fig 29)
? 315, Catch It
316. Spring t,
317. Shaft of the.auxiliary lever
318. Shaft of the catch
319. Textolite plate
320. Support
321. Return spring. t,
322. Fixed stop (fig,29)
.323. Dial Bracket
324. Pawl
325. Spring t,
326. Armature of the, electromagnet ESBR (fig 29)
. 327. Shaft
328. Plastic rod ft '
329. Electromagnet Of the counter tl
330. Ratchet'wheel of the counter it
331. Driving gear of! the counter
332. Gear
333. Number drum of the counter
334. Electromagnet armature of the counter "
.335:Electromagnet core -of the counter
. 336. Pawl t,
338. Counter spring
339. Pawl ? ft
340..1etal washers of the rectifier ft
-
S-21-C-R-E-T
.No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign Dissem
341. Layer ofselenium: (fig. .29)
342. Spring yaSher6 ? IT
343. Lezids -
344. Electric cableof_ESBR.(fig. 30)
345. Coupling of the electric cable' (fig.
3)4-6. Cover (fig 26)
347. Coupling (fig. 33)
348. Socket (fig. 30a)
349. Socket ?
350. Frame (fig.. ?0a)
351- Bushing with pin ".
352. Spring
353. Check bushing
354- Gasket , IT
355. Ratchet wheel
356. Gasket
357, Nut .
,358. Stop . ii
359. Eccentric (fig 21)
360. Pawl .(fig. .20)
361. Shaft
362. Spring
363. Pltg (fig. .30)
364. Rheostat 3, 6)
0
- 9 -
s-E-c -R-E-T
No Foreign Dissera
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
No Foreign Dissem
50X1
Figure 1.
General View of the Aerial Camera AFA-33/20M.
?
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
?
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
Direction of flight.
. S-E-C-R-E-T
No Foreign Dissem
No Fori4gn Dissem
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
? 3.-E-C-R-E-T
.No Foreign Dissem-
.
50X1
Figure 2,
General View of Aerial Camera AFA-33/75M
38 -
? S-f,,C-R-E-T
No Forign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2913/11/18: CIA-RDP80-00247A001300290001-4
? NO Foreign -DiSsem .
50X1
Figure 3,,
General View of Aerial Camera AFA-33/10?M
-99 -
S-E-C-R-E-T
. No Foreig4 Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-2-T ?
No Foreign Dissern
50X1
Direction of Flight
1
1. Type of cameras .
.A.FA-,,r/50M (1.500)
AleA- '-33/75M (f=750) ?
. AleA- .-33/100M (i=1000)
.
1-1
815
434
845
465
1075
695
2f!
A 'side
56,3+67
1 Co
50,5+65 119
75,6+94 142
_
34?
230
Figure 3a.
Dimensions. of Cameras AFA-33/50, 75 and 100.
?100 -
S-E-C-R-E-T
No Foreiga Dissent
17?
? 4 r.
'diagonalof
photo J?
46D
32?
24?
A .
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
3
No Foreign Dissem ;
6
50X1
4511 I
,.13 82 81:384 14 74 7
Figure 4.
Camera with Cone F = 200. Front View.
? I 0 -
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign DisSem
50X1
Figure 5.
Camera with Cone ?F = 200. Rear View.
? -102 -
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
K
S-E-C-R-E-T
No Foreign Dissem
Figure 6.
Canera with Lens F = 750. Side View.
-o -
S-E-C-R-E-T
No Foreign Dissem
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign Dissem
50X1
Figure 7.
Camera with Lens F 750. Rear View.
S-E-C-R-E-T
No Foreign Eissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
? S-E -C-R-E-T
No Foreign Di s s em
Figure 8.
Kinematic Link of Camera, AFA-33/20.14.
50X1
- 10 S -
S-E-C-R-E-T
No Foreign Di s s eat'
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
p-E7C-R-E-T
No Foreign Dissem
50X1
S-E-C-R-E-T
? No Foreign Dissem
'Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
t ? -
Driving motor
? S-E-C-R-E-T
No Foreign Dissem
231 206 -
/IPN)2
01111 v _
43 288 26 204 '205
/ 42 123---Li- 20242s' 27
?
34
,
..' .., . ?
&
Cr..14-'7'..4,;-., .;22- q .is:.,-.4?,'
ii
449 :? 45 ?II, I
I u
li . ' , .: . ; . ', ;. t; 2: 202.7- - -- 77.t 11; i
. . ? . . ? ' 8
i il Di li ,..cocie
..?, c!' ?131
Is 2.89
i
16 17
/ .,
---65 67 ,
/ .. .4
47 189
64 N N-71 -f
6:/! ?70
71
7. 5
rF:y
86 58
87
88 83
Figure 10.

;' '52
- 54
Kinematic Diagram of .Camera AFA-,33/75-100M.
50X1
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
3-E7C-R-E-
No Foreign Dissem
50X1
72 287 63 62
Figure 11. Camera Exposure Counter .
S-E-C-R-E-T
No Foreign Dissein
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E
NO Foreign Dissem
50X1
C\E1
Ca.
C)
LC2
V--
C
FA?
-10 9 -
S-F, -C-R-E-T
? No Foreign ?Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
No Foreign Dissem
111
110
Figure 13.
Central Shutter. View of the Mechanism.
50X1
S-E-C-R-E-T
No, Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
114
No Foreign Dissem
50X1
93 115' n5 113 105 100 98 95 260 97 99
112,
102
103
,
101
06
A04
..,---------107
. ? -: '7.11':11,i!-',t'''' k4
.
4.;-, 2 -'
Figure III.
Kinematic Diagram of the Central Shutter.
?lit
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
' S-E-C-R-E-T
. No Foreign Dissem
50X1
I 2,-
S-E-C-R-E-T
No Foreign Dissera
?
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C711-E-T
No Foreign Dissem
4'
50X1
Figure 16.
Louver Type Shutter.
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
No Foreign Dissem ?
- 020 cn CD 01 C4
L'a Col 01
-114 -
S-E-C-R-E-T
No Foreign Dissem
of the Louver
50X1;
r$
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-
S-27C-R-E-q
No Foreign Dissem
Figure 18,
The Mechanism of the Louver Type Shutter.
.S-E-C-R-E-T
No.Foreign Dissem .
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign Dissem
?116
S-E-C-R-E-T
50X1
No Foreign Dissem =
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
? S-E-C-R-E-T
No Foreign Dissem
1.04 205 216 229 248
220 \ \\\
225
221
237 'A
238
231
232 235 '239 206
230
360
362
361
222
203
202
214
212
z/
50X1
246
228
?
227 I I:
4.4111
ft A
. ? ?
.7r-224
.111,1;
213
201
211 \ \233
\
210 236 209 217 218 207 208 219 215 240 245 242 241 244 253
?
N. \Slide Plaie
x?,\ ?
?I?
? 1/.5
Figure 20. Kinematic Diagram of.Film Holder
No Foreign Dissem
?
ti
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
, Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
S-E-C-R-E-T
: No Foreign Dissem
352 358 356
? Figure. 20a. :Combined Friction Clutch
-118-
S-E-C-R-E-T
.No Foreign Dissem.
50X1
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign Dissem
50X1
Figure 21. Film Holder. View of Mechanism
- 119-
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
S-E-d-R-E-T
No Foreign Dissem
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No Foreign Dissem
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
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Figure23. ?Friction Clutch of Take-up Spool.'
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. S-E-C-R-E-T
No Foreign Dissem
197
191
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
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? S-E-C-11;-8-T
No Foreign DisSem
Figure 2L. Film Length Counter
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
311
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NO. Foreign pissem
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Figure 2S. Film Holder, External View
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S-E-C-R-E-T
No Foreign Dissem
50X1
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Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4 .
187
158
-E -C-R-E-T
NO Foreign Dissem
161 162 168 164 163 152 151 165 154
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Figure 26. Command Instrument
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No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
180
S-E-C-R-E-T
No Foreign Dissem
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.Figure 26a. 9ver-All. Dimensions of Command Instrument
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S-E-C-R-E-T
NO Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
187
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'Figure 27. -Command Instrument. View M_th Cover Open
.(continued on next page)
- ?50X1
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S-E-C-R-E-T
No Foreign Dissem ?
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18 : CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-
S-E-C-R-E-T
No Foreign Dissem
259
50X1
Figure 27. (continued from previous page)
S-E-C-R-E-T
No Foreign Dissem
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4 ?
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No Foreign Dissem
282 283 281 . 279
280 276 277 278
.Figure 28, ? Electric Motor MU-010
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? No Foreign Dissem
Declassified in Part- Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
Declassified in Part - Sanitized Copy Approved for Release 2013/11/18: CIA-RDP80-00247A001300290001-4
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