(Sanitized)' PROGRESS REPORT JANUARY 1967 - PROJECT NO. 635

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200020022-2
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: February 6, 2004
• Sequence Number: 22
• Publication Date: February 14, 1967
• Content Type: LETTER

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14 February 1967
635 - OD-148
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Post Office Box 8031
Southwest Station
Washington, D. C. 20024
Subject: Progress Report
January 176-7--Jrroject No. 635
In accordance with contract provisions on the above
project, we are enclosing three (3) copies of
Progress Report on Project 635 for the period January ' .
Also enclosed are two (2) copies of our Financial
Report for this period.
Very truly yours,
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LHB / aw
Enc. (3) P. R.
(2) F. R.
DECLASS REVIEW by NIMA/DOD
GROUP T
EXCLUDED FROM AUTOMATIC
DCWNGRADING AND
DEC I.ASSI FICATIDy2 5X1
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635 Progress Report
PERIOD COVERED: January, 1967
A. PRESENT STATUS:
The unit has been modified to include most of the changes
resulting from the first inspection in late December. These
changes include:(1) Motorizing the elevating table, (2) Redesign
of the high intensity light sources and fabrication of new parts,
(3) Elimination of various mechanical interferences, (4) Design
and fabrication of gear and film drive guards.
Work on the electronics is continuing and it is expected
that final electronic checkout will commence shortly.
B. PROBLEM AREAS:
1) Difficulty in viewing through microscope while in
seated position. - This was discussed last month and a proposal for
a change-in-scope submitted.
2) Tracking Light Sources: Redesign of the mechanism
for magnetically coupling the master with the slave was completed
and new parts fabricated. The new design shows some improvement
in performance although there are still areas over the format where
mechanical interferences cause problems. This problem is still
being investigated.
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There is one possible solution to this problem which has
not been investigated yet. If it were found that the image bright-
ness was sufficient when using the micrdscope at high power and with
the densest film material, then the separate high intensity light
sources would not be required. We assume that when the brightness
is checked in this manner, it will not be found to be sufficient,
however, we believe. that the brightness of the general illumination
source can be increased considerably (2 times). This would require
a change in some of the electrical components (hopefully not the
lamps themselves) and the addition of blowers for cooling the lamp
grids and film at the higher brightness levels. Conceivably, the
blowers would not be required if the higher brightness periods were
limited to a percentage of the total on'time (25% for example).
The light source could have two modes of operation and the higher
brightness mode could.be commanded by the operator only when needed
.(such as to pick out darker details in a density 2.0 area). The
control could be a simple foot switch which would approximately
double the brightness. A thermostatic interlock could be provided
in the lamps to prevent higher-than-desirable temperatures if the
maximum hi-brightness duty cycle were exceeded. This interlock
would prevent the operator from going into the high brightness
mode, however, he could still use the normal mode illumination.
We believe this approach is worth further consideration.
3) Platen Raising Polynoids - During the most recent
assembly (in preparation for the customer's technical representative)
some difficulty was experienced with the operation of the platen
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raising polynoids. Limit switches were shifting their position and
some sliding member were exhibiting excessive, friction. This,
however, we do not consider a basic problem because the mechanisra
had been operated satisfactorily previously.
4) Delay in receipt of approval of the change-in-scope:
Although the proposed eyepiece adaptor is mechanically independent
of the basic table, it must be designed (from a human engineering
viewpoint) and, preferably, initially checked out using the light
table. Further delay of approval will become a problem because the
table will be delivered before it can be used to aid in the adaptor
design.
C. PROJECTED WORK FOR FEBRUARY:
Unit will be made operational including any changes necess-
ary to make the high intensity lights perform properly.
D. FINANCIAL REPORT:
Financial report for the month of December is enclosed.
REW/maj
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