(Sanitized)' PROGRESS REPORT - SEPTEMBER 1966, PROJECT 635

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200020028-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: February 6, 2004
• Sequence Number: 28
• Publication Date: October 31, 1966
• Content Type: LETTER

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CIA-RDP78B0474 02200020028-
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31 October 1966
635 - OD-136
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Southwest Station
Washington, D.C. 20024
25X1 Subject: I I Progress Report
September 1966, Project 635
Progress Report on Project 635 for they period September 1966.
Also enclosed are two (2) copies of our Financial Report for
this period.
In accordance with contract provisions on the above
Very truly yours,
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Executive Vice President
Encl: (3) P.R.
(2) F.R.
DECLASS REVIEW by NIMA/DOD
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Period Covered: September 1966
Document No.: OD-134
Dated: 26 October 1966
PRESENT STATUS
Fabrication of parts is complete with the exception of
a few parts required for the high intensity tracking light source.
Main assembly has been started. Reflection upon film transport
systems in general has led to the incorporation of an additional
feature in the 635 design. This feature, although not essential
to a satisfactory performance of the equipment as specified, will,
we believe, represent a considerable improvement in film transport
control. The feature of this change, which is currently being in-
corporated, is the maintenance of a controlable film tension re-
gardless of film speed, spool diameters or accelerations. To ac-
complish this, a small strain sensing element is mounted on one
of the film guide rollers. This element directly measures the
film tension and controls the torque on the magnetic particle
drag brake on the payout spool. It was felt, since the basic
components of this system were already in the design, that this
additional capability could be added at minimum cost.
PROBLEM AREAS
Tracking Li hg t Sources
The design problems with the high intensity
light source reported previously have not been resolved. However,
fabrication and assembly has been continued with the belief that
Approved For Release 2004/03/26 : CIA-RDP78BO4747AO02200020028-6
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Approved FoIease 2004/03/26 : CIA-RDP78B0474j02200020028-6
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the remaining design problems will be resolved early in the assembly
phase. One of the problems is the difficulty of designing the
master magnet supports so that they can cover the full viewing
area of the objectives. In the present design there is a possibility
of some interference. This occurs in the magnet support structure
when the high intensity sources are swung to their extreme position
away from the operator, that is toward the rear of the viewing for-
mat. Since it does not seem to the writer that this area will be
commonly used for viewing, we may find that this limitation is
acceptable.
Glass Viewing Platen
We have not received delivery of the thin
special chemical strengthened glass platen (Chemcor) from
This will shortly become a delaying factor because it is
intermittently associated with the satisfactory operation of the
high intensity tracking light source. The concern here is due to
the smaller than specified thickness being supplied by the manu-
facturer and the possible effect it might have due to its greater
flexibility. The change in thickness of the glass from that spec-
ified resulted after an order had been placed and at a point in
time where we were already committed to this type of design. The
vendor, besieged by technical difficulty, was allowed to continue
in the fabrication on the condition that the glass could be re-
turned if found to be unsatisfactory due to extreme thinness.
PROJECTED WORK FOR OCTOBER
Mechanical Assembly will be 80% completed.
Electrical Assembly will be 50% completed.
Parts for the high intensity tracking light source will
be released and fabricated.
It is expected that the customer's technical representa-
tive wilAp eveah6nrtRdIetsie 3e42Cp J1 f ~ 4~7 Q~Qr20@J8-6he end
of the month.
-2-
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Approved For Release 2004103126 . IA-RDP78B0474 002200020028-6
Enclosure
Financial Report for the month of September.
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Approved For Release 2004/03/26 : CIA-RDP78BO4747AO02200020028-6