635 PROGRESS REPORT

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200020024-0
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 6
• Document Creation Date: December 28, 2016
• Document Release Date: June 22, 2006
• Sequence Number: 24
• Publication Date: February 1, 1967
• Content Type: LETTER

i - A Approved For Release 2006/061 ?,na 04747AO02200020024-0
1 February 1967
635 - OD-145
Progress Report
December 1966 - Project 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 December 1966.
Also enclosed are two (2) copies of our Financial
Report for this period.
Very truly yours,
LHB/aw
Enc. (3) P. R.
(2) F. R.
L'L
GROUP 1
EKCLUDED FROM AUTOMATIC
DOWNGRADING AND
DECLASS IF(CATION
OPTICAL - MECHANICAL - ELECTRONIC SYSTEMS - RESEARCH & DEVELOPMENT - PRODUCTION MANUFACTURING
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Period Covered: December 1966
Document No.: OD-140
A. PRESENT STATUS
Unit has been completely assembled mechanically and
reviewed by the customer's technical representative. We at i15x1
have also had our first good look at the design and havw5xl
been able to assess many of the operational features.
Primary among the comments that our people and the
customer's technical representative have made is the awkward position
which the operator must assume when using the versatile micrd~xl
scope. We have considered various approaches to the remedying of
this problem. The most expedient and that which we feel is also
the best from the standpoint of cost-and ultimate operator satis-
faction is to add a special eyepiece extension assembly on the micro-
scope. This was proposed with a cost estimate on 12-30-66. It was
considered a valid change-in-scope because the equipment specifica-
tions established the equipment configuration.
The modification proposed completely eliminates the
problem without making compromises in other areas of the instrument
design. From a purely optical standpoint there is no observable
deterioration in field of view or image quality.
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635 Progress Report-December 1966
OD-140
Page (2)
In general our initial evaluation of the design has
been favorable. We feel that the instrument will serve as a very
valuable tool and with the exception of the problem with the micro-
scope, will be comfortable and efficient to use.
Photographs #871, 872, and 873 enclosed show the )
completed unit with its integral elevating table as it was shown
to the customer's technical representative on 12-22-66.
B. PROBLEM AREAS
1) Difficulty in viewing through microscopes while
in seated position. - This has been discussed in some detail above.
2) Tracking Light Sources: - Experimentation with
the tracking light sources has uncovered a number of problems. The
supports for the master magnets have interferences with themselves
and with parts of the spool support castings at certain positions
on the format and depending on which rhomboid assembly is in use.
A concentrated effort will be made to modify the design in this
area to simplify the use of the sources and extend their range of
operation over the format. The most logical approach appears to be
to shift the pivot point of the master magnet support to a point
under the axis of rotation of the rhomboid. This however has attend-
ant problems because the length of the rhomboid arms differ and the
available space under the rhomboid is severely restricted by the
clearance area needed for the "finder wires" on the microscope.
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635 Progress Report-December 1966
OD-140 Page (3)
However, a modification of this basic idea is
underway and it is hoped that a suitable design will be arrived at
shortly.
3) Various mechanical interferences were discovered,
these fortunately can be relatively easily eliminated.
4). Elevating handwheel torque: - The torque required
to elevate the table was found to be rather high and rotating the
handwheel was found to be particularly inconvenient and fatiguing
while in a seated position. This is really a basic problem relating
to the amount of energy that must be delivered to the table in a
practical interval of time. Assuming we want to raise the table
at a rate of one foot per minute, even with a gear train of 100?/
efficiency, this would still require the operator to exert a 3 or
4 pound force on a 6 inch handwheel while turning the crank at a rate
of 180 RPM. When we multiply this by the reciprocal of the effici-
ency of the gear train and sliding ways, the torque required becomes
uncomfortably large for a seated operator. Thus it has been decided
to add a small motor to completely relieve the operator of this chore.
C. PROJECTED WORK FOR JANUARY
The changes resulting from the initial evaluation
will be incorporated. The electronic assembly will be completed
and the unit put into operating condition.
It is hoped that approval of the microscope modifi-
cation will be received so that the design and fabrication can get
underway.
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140,
635 Progress Report Page (4)
OD-140
D. SUMMARY OF CORRESPONDENCE
1) Visit by customer's representative t 25x1
on 12-22-66. - E.D. visited o review the 25 XI
progress on the development and obtain his first look at the com-
pletely assembled unit (from the mechanical standpoint). E. D.
was concerned with the position of the eyepieces on the microscope
and the high handwheel torque. indicated that both these 25X1
problems would be investigated.
2) Letter and quotation from
ing officer dated '12-30-66,
E. FINANCIAL REPORT
to Contract-5X1
25X1
Financial report for the month of December is attached.
Prepared by:
I
RW:mj
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Project Engineer
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