PROGRESS REPORT FOR VERSATILE, HIGH PRECISION STEREO POINT TRANSFER DEVICE

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200010025-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: June 22, 2006
• Sequence Number: 25
• Publication Date: August 25, 1966
• Content Type: REPORT

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STAT
PROGRESS REPORT
For
VERSATILE, HIGH PRECISION STEREO
POINT TRANSFER DEVICE
Period Covered: July 1966
Dated: 25 August 1966
Job No.: #552, #552A
Document No.: OD-299
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Approved For Release 2006/06/22 : CIA-RDP78B04747A002200010025-0
 Approved For Release 2006/06/22 : CIA-RDP78B04747AO02200010025-0
PROGRESS REPORT
For
VERSATILE, HIGH PRECISION STEREO
POINT TRANSFER DEVICE
Progress Report 552, 552A for July 1966
The following has been the work on these systems:
Trips to installation site have been made to evaluate
and correct measurement errors and laser random firing. Work on
either of these problems has not been completed, although data
from measurements and experiments has brought conclusions for
solutions that remain to be proven in August.
In the work to improve measurement errors, way straight-
ness was analyzed first because nominal lead screw variations
could account for a small part of errors seen. Collimator moni-
toring confirmed errors in guiding means had a similar profile as
did linear measurements. An attempt to reduce errors by shimming
ways was commenced, but because of the small degree of adjustment
needed far from ideal correction was made. From this result, ways
and their supports would have to be reworked for desired accuracy
goals. Study with remaining 552A system at is
being used to seek reliable monitoring and correction means.
The study of laser misfiring has produced suggestions
of laser pump lamp breakdown and/or transients in high voltage
that is continuously applied across pump lamp. We have purchased
components and test equipment to filter transients, replace lamp
and monitor transients in high voltage circuit. A visit in
August will be made to complete work on this problem.
Approved For Release 2006/06/22 : CIA-RDP78B04747AO02200010025-0
 Appre-,,-ed For Release 2E)8&86,'22 ! 61A RBP:78B84:74:7A8E)228E)818E)2
552A #104
Principal work on this system has been to complete
electrical debugging, start scanning drive electrical alignments.
One scanning drive motor was returned from inspection and repair
at manufacturer after discovery of what appeared to be an internal
interference between armature and stator. Dirt was claimed to be
the cause here. Because of the study of problems on 552 above,
this system was partially disassembled, however, few alignments
are expected to be disturbed.
Work on the retrofits has advanced to completion of
design, detailing and electrical circuit development for image
alternator and layout of film drive. Long delivery items for
image alternator have been received. Motors and controls for
film drive have yet to be selected because development of circuit
is not completed.
Image alternator now consists of two (2) rotary shutters
driven from a common single revolution clutch that will stop
shutters at their open position. The rotary shutter desigi1 ap-
proach was adopted over the reciprocating design advanced in the
proposal because of its improved balance properties. The control
will consist of a single knob on right side of eyepiece assembly
that will first turn "on" motor then clutch. Further knob rota-
tion will increase motor speed with shutter rate varying approxi-
mately 2 to 10 cycles per second after clutch is operating.
Shutter mechanism and controls with motor and clutch circuits and
mounted separately in existing space in eyepiece assembly.
Film drive remains as proposed except load sensing scheme
has been changed to the photoelectric arrangement developed for
some of our film viewing tables. Compact electromagnetic tooth
clutches have been selected to transmit motor and operators power,
Approved For Release 2006/06/22 : CIA-RDP78B04747A002200010025-0
 in turn, to film. In the present configuration, motors are in
line at writing at top rear keeping obstacles for operator's knees
to a minimum. Details of motor and electronic mounting are now
being developed with a conclusion seen late August or early
September.
Retrofits, final debugging and adjustment work should
be completed in October 1966.
552A #103
This viewer was shipped July 18, 1966 with installation
following that week. Because of our vacation schedule being
July 25 to August 8, work at customer's plant was completed in
August.
Enclosure
1) Financial Report
Approved For Release 2006/06/22 : CIA-RDP78B04747A002200010025-0