WINDOW GLASS ACTIVITIES - 2/22/63 - 2/23/63

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP67B00511R000100190023-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 8
• Document Creation Date: November 16, 2016
• Document Release Date: February 10, 2000
• Sequence Number: 23
• Publication Date: February 28, 1963
• Content Type: MEMO

Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
BEST COPY
A VAILABLE
Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
 STATINTL
ase 2000/05/04: CI1
Al eS`$ t" rt*t? 1- a :0J YJi? Y ;5 c ? 3 ? s .r-
? aTM~"z'S~ ? 8 $ cf S J by r,.
4W.e"''`.'"a~,.,;s ss
f ;:.."t3-,.
t
fC,U d by pr W_ gk "# _ .c tilt '-I' f /mar EZa t 8~tty, r"
t~:F qu$: t~-& 1 tNr gkS 5 $ .. ~} _.: $. + f r.? t _. v~ ..v7 a T?,, rgr:
t _
Another pra.ct{: tit :& i + s Rr r, as w' 3 t Y
a$ soci ed witr the azt ch s c f e cu v i i .s s F h . h ? i r4 &t
of the` craE r- i& " ~? ? ~~ fi L t ze l *." k [ P j
Our ltt,e*t of or~ s e 1d J IF ire grit", e?t-Is Si C ~e ts; V;,
good CLTf~$ 1 y-of ow, and &be-.iwe.. f otai ', crick-ice:: at;d
YVA.L :t-if. tht"ifi..'t..~u..s
Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
 Approved. For. Release- 2000/05/04: CIA-RDP67B00511 Rd00100190023-6
:cr. e~~i~~v__?y ode
b
i e tt t~c~ tt a~ fii^ a~ is ct S' r ~ ti y:PieiEel
3ffi i * ?? p 'Ga Y" ? a 'w ~ ''t;~ .s'".St fief s s
~je
fY 'du?'ir3.+ R ?:. ~rI~.LF:~ t
agredd to ti 5vi 3t4t Sys . b,_ : ? te4 .~ .xA -;~^r r i r? r?.r-
^ f c?rt a . : he a l ck ag. eed
~a.,.itide a W;SC 6, %,,r' d.f.8 *r .. L^ it k" ~ 6>iid
Sri C'~CaULAL Ye LVL VP FIAILP..1 i ar:. i%.Var -tG-a1 U.mi?;iz- weld, bey w e,' ht",t t{'
achieve the proper aett *s tot, R ?z3d fe14, b.;t screed to tP .,.
They .tti~ took us o the we3dlz? -tquinx 'tt sd .= ? c e rRcpsi''r
t-Lftib FCCi,'ft_ ?ti t E' F'S~ is :Mat :a"+d k--uid~ caic
e wrfttp
r n re treat for additiortsl work, *'`& r ' e :suit' a9t. as e,,ei 1 f .r ta: S"t7
r" l
Br,,udIir oet pia'`'? :Lu' erzeZt vi i S t. te~
+y electron I eam tacxxi ra, ke.} d:a~cu-..er nr i,
e ,die?ux e , `A p:3ai f its ~~ :?^~ > a eIV ... "r -C~- aaa 4e'
i
Approved for Release 2000/05/04: CIA-RDP67B00511R000100190023-6
 Approved For2elease 20001.05/04: CIA-RDP67B00511 RO
,. k
u: &1hLSt?r; 4.t Zl`T,dL ~_%nrtld tulD?l
will, -for tCrr5s
el f f fi
l , ... s
cu
present Jigging 1r is arrfr.t:v
Another plate glass 14 k : j w: ,;,;
th.s assembly
i
,
s
ze quartz
window 'Will subsequently be made.
Work saontinuing in an effort=, ibrp c~vi~ ttie relic tl.ity of-thc'lb ellti~,=s
At T . ,
,,Additional 14 x 20 frar6s are cur:-e}.t?y being made at Taylor-Winfizeld in
an effort to :wild :p our stccu.
Two?ccmpletedp vac-io pr-we; Supp ie~ name ~e n made.
The use of,a glow discharge fechniq~ue as sr;ears ci o* gas*ing or vacuum
window is being investigated.
Approved, For Release 2000/05/04 CIA-RDP67BOO511 R000100190023-6
 Approved For:Release 2000/05/04: CI~-RDPE
TO.
FROM:
g `EJECT, Windo i* e t v ti 4 ',
x~ t lent ie~ak
4t 1 I", nt
It 8 beta . tie ..;d i j, erc~ nel '?-p
enlaaged i 'the e p e i p*
-,f C"
14 t.n? o? foil - Tbl r?. V,
althottg we e.
still have r t t a v at.
feel are desirable- tl al=to.
factory. The results ar# en
to_ attach a' bellct,s 't4 out good i4 x 20 frame. This frame is the one that
far were godd. We ate going to ma k# more before using this technique,
the higher uelti 11th rI.ze. ale
is st .l 1.
not "been
for this work, have..
.the, ello~48 46th
a; ,x to the bellows . tt t profit e ;
'e ed ar4 iacpzcvvd tur tez riiquea Ve
edcRr r i tb:c? r i i ? -s. , which 1we
shth h axe. which we, Oonetder sstis--
Fare nearing sucoe'Ac Asa intend
is going to be used for ti kifig a quartz and glass window,
attached. It .is awaiting attactent' of the curved tube And vacuum appen-
? ,pAnt i ere both coated pieces` of glass have been satisfactorily
- ritae s` r."ioic -to maki 4 _ - w
p_ ng the good o:~e. ?This 'i udaio:haa - prograased to
attached'.
loge.. the. low thermal conductivity mount and cooling fine will also be
~'- Considerable effort was spent in preparing our test, facilities for tesi-
perature cycling, leek checking, vacuum testing and outgassing both the
Approved: For Release 2000/05/04 : CIA-RDP67BO0511 R000100190023-6
n rye, -de feel t? t we'
ure joutbstituted a BT braze for
J
wo test samples ae. have don r so
 Approved' Four Release 2000/05/04: CIA-RDP67B00511 R'b00100190023-6
frames 'Witprotected :al e ore tigh '14 x 20 tram e with `protected
alumin= to. the fr so e wore able to prcd ce twb*tight~7-X 10
tie ve i g1y soloed' t .,pro lems "~saciated with attaching.-the:
to= bU I gip; 4a. b k log of 14' .x 2 fs ss
Barry. Pr to ark, pl ni to leave for. Ohio. on Monday.t.g continue
1074-ccieec.ge' der t test c=titiCVA_ of-ll20 atm. He -different aI
.'alaamino av,.d 'one. 14 x 20-.fraw which had a- nin *te leak rate of =2.4 k
this afternoon. At soon as the curved tube is attached to this unit it
will be erature cycled under simulated operating condit:ieAa empioyictg
One' of the t'ight 7 x 10 frames is bei used for making 'another tight
testable 7 x 1+0 window. T.be bellows and ribs have been attached sat s-
actoarily. The BK-7 w+ attached this morning and produced a weld which
visually appeared as?good as any'we have ever made. This is using pro-
tected aluminum. The fused silica is being applied with a double weld.
wil ro 1 it" still to be solved in . t -tee feel is at a e
omiste -- this
re4,ti1 to equate. The effort is being Lu-
the geekend in an attempt to. finally
area by the beginning of next week..
welded I,to plate glass andassemtsled first as a necessary preparatory pro
aw .tingoaa adequate solution to the bellows problem.'H wevery a practice
the vac in pump.
Construction of the first 14 x 20 configuration has begun. A frame is
cedure-to making the first good full size window.
Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
We .:were able to get occasionally tight seals but An
 Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
M E M O R A N D U M
TO:
FROM:
DATE: January 31, 1963
SUBJECT: Window Group Activities - Period 1/24/63 to 1/31/63
CC: All Group Leaders
Vacuum Window
The tight 7 x 10 window was temperature cycled through the mission
profile 9 times. It was leak checked after this cycling and indicated no leak.
It was decided to soak the assembly in helium for a long period as a more severe
type of leak test. It indicated a leak rate of 1.2 x 10'8 cc per sec-o,id.
The next 3 cycles of this configuration were done with a 1/3 atmosphere
pressure differential between the gap and the outside environment, to simulate
actual conditions. After this test, its long, terms leak rate=. was 30 x 10-8
cc per second. The calculated allowable leak sate. in use, which our VAC-ION
7 - 8
pump is expected to overcome, is '5C x
J _.c per second.
Efforts are now being directed tc produce another testable 7 x 10
and a 14 x,20 configuration. The two primary problems at this point are as-
sociated with aluminum attachments and bellow attachments. Neither process is
fully under control at this time.
A double (concentric) weld on the 14 x 20 plate glass sample was made
and Its tight. Investigation of rewelding and salvage is being conducted. It
has been decided to-postpone an attempt to eliminate chipping during ultrasonic
welding until after the next 7 x 10 is welded.
The pumping device for the 7 x 10 test window is completed and leak
tight with the exception of the G-P valve which still must be added.
Miscellaneous
Alternate seal program-preliminary checks with a stainless steel
(teflon coated) "0" ring were made. This ring was of the self energizin type.
The seal leaked badly under all screw torque
ted when the 11()"
deF...... d ina-
rin
g
PFF/jas
Approved For Release 2000/05/04: CIA-RDP67B00511 R000100190023-6
 Approved For kelease 2000/05/04: CIA-RDP67B00511 R00'b 100190023-6
STATINTL
Wi ow Group Acti 'Uis3 - 1/2f/~3 - 1/ j 3
Non-V&-,uum Window
Test eertxsp foa c bu fining imf;~-se.ti -. e~a.~~ asg 3 ity to Seal an
inve.r foil to glass with RTV, wric~ ts ~.~: rasa for the new ddeign of
the nonmvac-tsum wlrev i.m b rg It is st,tLcipatet that. these
tests will begin sets week. -
(L-24 10` ct/i*c leakage. This test wi1 be c tines emd 4.4o ie-te,
after airs tyvAOs .see .4 to, lzd+ .te the i",e tit . of cittr sly 'sligh
outsides of the .weld r t Vass 1"?t d after t o s w' The. w i v
Vacuum Window
A.-tight 7 z LO va == wictow,,-Au t xperatzra cycled mine. tilt 8 .$
is Moos s, with t ss#.so~: profs ~hi;~~r . ~f thes? egua is .tan ;the.
report vviii, be a ies d tits c: isxai :moo
in't1~at -it.re;xet nta our fic t e Qesefui effort in h#.s length weld
A tight. 14 x 2O.1ir ? a, to giaea t fie %'eid. we* This,.is si .Mfi -t
are at Taylgr,- 'tn.field attetepting .
to increase t ? ashes iity. 0~10. the vac . to iivar resietan*e,we`Idizg..
As of t)4$ .4ate, Paul-,re 'rt, 4z, - significant progress in this regard.
pump; flange and eq per ; asst asseatbi is r
ft eE Y P 400 ,040: ;f toady
The fabrication of:.all equipment which is neeesstxy for the thermal. cycling
test sof the 7- x :18_ wtadow ' ittciudizss support suss strt stare for, vac-loon
this tiffs xity has been .di acussa wig be tried very. shortly;
.smsteh bets a the billows and 'the foss. A teechrs.igii for overcoming
bresing by elvser, titoring of the brazing temperature. There is
posiibiiity that our diffteulttes s sy be ' d? e . to a thermal coeftia lent
,file a to ti to increase the reliability of our ' el:ows to.'fotl
and should be eavletsd by
was `'abricste b silsd at s rc~o?imetels 2 ! s `:no 'fr's tune of'`t e''
priot.ity basis; t t t. with g d t'" -sk- t" ` m
Inra$ 1 t iaas of amts sealing to a -siques +t t
f Tag. of ,th+e bolts. =- Thta ? sal .tee h~aigbe will, be''explored -more thoroughly
STATI NTL