WINDOW GROUP ACTIVITIES - 10-5-62 - 10-11-62

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP67B00511R000100180006-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: June 9, 2010
• Sequence Number: 6
• Publication Date: October 18, 1960
• Content Type: REPORT

Sanitized Copy Approved for Release 2010/06/09: CIA-RDP67BOO51 1 R0001 00180006-6
0 ;
, Window Group Activities - 10-5-62 - 10-11-62
0 FZ77373
Non-Vacuum Window
4
The detailed flight test outline written by was STAT
reviewed and accepted. All adjustable spacers were completed. fixture
to enable us to mount the non-vacuum window on a shake table to obtain
vebration data (if this should become desirable in the future) was also com-
pleted.
Vacuum Window
Ultrasonic Welding: After considerable success last week in welding
aluminum to 7" x 10" plate glass we suffered a malfunction of the weld-
ing equipment. The Gulton service representative was unable to make the
necessary repairs here, and the welding head had to be removed to Gulton.
We hope to resume operation by Friday (12 October).
Induction Welding: Results to date are still not consistant. Flow of the
gold braze, and wetting of the invar by the braze are improved by
using the latest cleaning methods developed by[- _ We have ordered 25X1
a quantity of .003" braze rings from Randy & Harman which should improve
capillary action by reducing the spacing between the bellows flange and
the foil. R. Corish is visiting Lepel today to see if they can offer any
suggestions which will improve the consistance of our results.
Hydrogen Brazing: At present we have on hand twelve (12) tight 7 x 10
foils of which approximately nine are usable. Work is continuing at
Quality Heat Treat in the manufacture of additional foils. We have six
14 x 20 foils of which one has been tested and found to be tight. The
remainder have not yet been tested.
Resistance Welding: are
presently at Taylor-Winfield for the purpose of attaching aluminum face
plates to the 7 x 10 foils. They report that they have good control of
all welding parameters; that their cleaning procedure produces consistant
results; and that all pillow samples are tight. The one foil that they
had completed as of this morning appeared perfect visually, but indicated
leakage when tested. Paul suspects that the fault may be in the testing
appaj atus rather than in the foil. He will report by telephone as soon
as there are any further developments.
Miscellaneous: The design of the reinforcing rib and heat drain for the
14 x 20 vacuum window is completed. Drawings will be released for quote
within the next few days.
Experiments on the cleaning of invar are continuing. Our
latest consistant results indicate that we are approaching the surface
resistivity obtained with grit cloth. (100 micro-ohms vs 80 micro-ohms
for grit cloth).
Work is continuing on the design and fabrication of the Vac-Ion
test equipment and the metalized eladtomer seal test equipment.
Roy Stoll
Sanitized Copy Approved for Release 2010/06/09 CIA-RDP67BOO51 1 R000100180006-6
 Sanitized Copy Approved for Release 2010/06/09: CIA-RDP67B00511 R0001 00180006-6
Non-Vacuum Window
Word has been received that windows will be installed beginning
22 October. Final preparations are now being made to arrive on Monday for
the purpose of supervising installation. Flight tests are scheduled to be-
gin next week.
Vacuum Window
Ultrasonic Welding: The welding head was returned by Gulton on Tuesday.
Since then it has had to be dismantled about four times to. correct internal
shorts, At this time it is still not operating satisfactorily. The
reliabibity of this apparatus is without doubt the poorest that I have ever
seen I recommend that if possible some action be taken to reduce the down
time of the welder. This action may take the form of insisting that Gulton
provide a resident serviceman or a duplicate welding apparatus.
Hydrogen Brazing:) fare at Quality Heat Treat
and report that the use of a new technique to braze the band splice has
resulted in a considerable improvement in both time and foil appearance.
Two 7 x 10 foils have been received and are now being leak checked. One
additional 14 x 20 foil has been made. Work on the large foils was de-
layed due to furnace repair at Quality Heat Treat It is expected to re-
sume tomorrow.
Resistance Welding:) fare at
Taylor-Winfield engaged in attaching aluminum face plates to the 7 x 10
foils Paul reports that they have uncovered several details of the
resistance welding procedures which may have contributed to previous un-
reliability. These have been corrected and a 7 x 10 pillow sample was
made which was tight. A subsequent effort on a frame, however, was un-
successful. Work will continue over this weekend. Paul plans to return
by Monday morning.
Induction Welding: A visit was made to Handy & Harman on Tuesday during
which our bellows to foil brazing difficulties were discussed. As a result
of this visit we have made two tight bellows brazes using sterling silver
(92.5 Ag, 7.5 Cu) Braze rings were placed on both sides of the invar foil
to insure better capillarity. We feel that, although these brazes were
tight, the addition of 0 2% Lithium will increase wetting. A sample quantity
of lithobraze has therefore been ordered, and will be tried shortly.
25X1 Miscellaneous: A visit was made to Spotwelders, Inc. to familiarize
with the Technique of attaching reinforcing ribs to the invar
The finned heat drain for the 14 x 20 vacuum window was completed. This
should allow us adjustability of the inner glass edge temperature so that
a uniform glass temperature can be maintained.
Sanitized Copy Approved for Release 2010/06/09: CIA-RDP67B00511 R000100180006-6
 Sanitized Copy Approved for Release 2010/06/09: CIA-RDP67B00511 R0001 00180006-6
` Witdow Group Activitio 2
October 18, 1962
Work is continuing on arriving at an optimum cleaning schedule for invar.
Vac-Ion pump test assembly is scheduled to be completed by the end of the
day. The test itself should commence shortly thereafter
Outgassing and checkout of the vacuum cart is continuing.
Sanitized Copy Approved for Release 2010/06/09: CIA-RDP67B00511 R000100180006-6