Load transfer to end flanges for prevention of bellows buckling in tunnel fuel tan

Collier, R.

English

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STAINLESS STEEL PRODUCTS INC. 
1.- W # 4 W  C I A N 4 N V O  m L V 0  
D L ~ R B A N K  c A L I C U R N I A  . . 
S f FR IhW RE PWIT 
(including design a n a l y s i s )  
N65- 19892 
I 
P 
{NASA CR OR TMX OR AD NUMBER) (CATEGORY) 
i 
P.0. NO. XhS 8-11583 
SSP Part IJo, 3503324 
WSA Specification 60824450 
Contract Period 1-30-64 t o  2-3-65 
tft 
o b  
https://ntrs.nasa.gov/search.jsp?R=19650010291 2020-03-17T00:39:42+00:00Z
!hiring t h e  product ion of this asscwbly YP. 33O?32+1, Ptocurcwnt Speci Ficnt  ion 
Xo. 60824450, no si mi fieant ira;>rcrveFmts ueru fr\und necorrserp since this sins 
a follow-up contrnct and nost o f  the problem were rosnlvcd duri3v tl:c corT1ctiw 
of Contract No. NASY-52'37. IIoIIover, chis c m t r n c t  vas mcafvacf beeere conplet inn 
o f  tlrc or ig innl  contract ant! tho overle? marilted i n  s p c i  f3caticjn tov i s ions  to 
Iwth  ordon s irul tanemsly .  
Tim T'urchse :Met,  dated 1-30-64, requ!rrd t h o  r-ganufncturc! o f  18 -,retfuction 
parts and ttiroo Smplo Test parts; thoso qunntitias be inp  Teducccf by tclt'araltc 
dated br i l  22,  1964 and confirmed by letter c ? f  .Tuly 1404 ,  to  12 ~roJuct i tms  
parts and two S a ~ f u  Test pnrts.  
Ti0 cnrrcction oC problem oncounterod d w i n q  tIic n\ml iCicat ion TcstinA nn 
C o n t r x t  ?io, M S  8-5297 required t l i n t  E.:) ,  3U3 bo incormrnted. TIris 1i.O. re- 
quired the drilling and iqsertion OB tielicoils i n  son1 flen$e No. 33OS324-4. 
A full npert of t h e  rearahr was cmtrinod in the orfginnl Sumery Repo~t. 
During tho mufucturing process the only dfPPiculty that  Arose WPI the  shrinkage 
of tho  SSOfS24-5 flan#o &on it was welded to  the bbllawa assembly causing the 
25.12S/tS.115 diaenrion t o  be out of tolornnco m final nssombly. This dis- 
crcpancy was submitted aar o Denriation Authorfratton Request form t a  Fhrshrll 
Space Fl ight  Center t o  allow sn increase in drawing tolsranco of t h i s  dtmenslon 
to 25.125/25.100. The discrepant parts were corroctsd t o  t h i s  new talsrmco 
otrd shipped. 
The two Sample Tests required by tim contract were conq>loted without incident 
and tho t o o t  mportr were subnittocl to blarshsll Spnco Fl ight  Center for approval 
Theso appnwais were given on 1-12-65 and t h i s  contract i s  now considered closod. 
DESIGN A1"CALYSIS 
Buckling from extennX pressure 
When o bsllawr in pmssurfred oxternally, i t  buckles i n  t h e  s a m  mmner ns 
a t h i n  cylinder. "Ihsreforp from 
fiam E Yaungs Modulus - 29,000,000 
v - POfSlon'S Ratio * .34 
I [ 0.D.' 1.0. 2, '/* .I ( 29.9' + 27.45 ) "* z 1--
6 .I 28.62 inches diaRioter 
I 2 t  ?I h3 3 2 x .025 x 1 x 1.22s 3 
Pltcl\ .666 
teb3 P 
- 2 x 29,0oo,u00 x .lS& 
(1-.3d2) x 28.62 
P, - 386 psjp: 
The cr i t ica l  f n i l u r e  point  t)ccuuso of  tho extcrnnl loadinp,, w i l l  tic the  end 
convo lut ion  on either end of tho hallowrr due to  t h e  cnrrv-hnck cni! v:mt oT 
t h e  ncch nttachmsnt to  thc end f lnngos.  "Itis c o n d i t i o n  will cause a reduction 
of c o l l n p s i n g  pmasuro of 70% r e s u l t i n y  i n  an nctunl ptcssurc of 12U p i p  
(determinod f r o p '  previous test data.)  
Col laps ing  c h n r n c t e r i s t i c  o f  t h e  bellows necks or end attnc! i~ei i t  sleeves has 
beon maintainod by cappinq t h e  bellows necks ovor t!tc end attachwmt f; .-;atas 
thus nllowiny, tho end flanyes to  support t h e  inposed lnnd.  
I I 
STAINLESS. S e E l  PRODUCl'S INC. 
. .  ,a . .(I 
&@W N B A Y  I L R N A W O O  8 L V D  0 
In t h i s  cmFiguration the bellows fatigue characteristics will. bo as follaws: 
t.(otfm strnss ~q - 41400 x 10 x tx,v (assuming complete slnr t ic  chrmctor- 
ist ico for each of the calculations) N, h2 
Prom the Cycle Life Curve it Is clenrly indicated t h t t  the required notions 
are well wi th in  tho capabilitfor OF this bellows, 
Spring Rate Z,  - Mp x X s  33.6 x lo6 x D1 x t3 
N, hs 
* 1 x 1 x 33.6 x 106 x 27.45 x .02S5 
z8 
SO f 1.2253 
Spring Rato 2, 9 261 lSs / in .  
Thickness required to praverit dePomation of convolution sidewall  : 


Bellows, tunnel fuel tank  summary report

Qualification testings of bellows tunnel fuel tan

Mifrofiche (MF) 
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STAINLESS STEEL PRODUCTS INC. 
Thlr  S u m ~ r y  Report lo bslng submitted I n  earrspliance, with tho requlrem3nta 
of h t r a c )  NAS5297 and wlll swAaarIrs tho findlngs nus& durfnq tne perform- 
mce ot mfs contract. 
Durlnq the productlon ot M l s  Aosenbly Nudmr 3503324, FJrocumnont Spec1 f 1- 
c a t l m  rtudmr 60024450, mly two slqnificcvr? Imrovomnts wore found mas- 
sary, one beroc) tho  addition of a pneumtlc leek test as ?art of the occopt- 
mce test lnq, the, other bslng tho delrsfion of the aluminum toll wrapolng of 
tbe moe&ly tar shipwwnt. It rles found necessary to lsdd a pnoumatlc leak 
check of 7.5 +2.5 pslq to tho acmptnnca tes t lno  of  the wsanbly uhon a look 
In a unlt uos-drrfectod during tho Inotallatlon a t  the tmrgo C. %rshaI I  
Spaae F l l q h t  C h t c s r ,  Huntsvl I le, Alebema. 
tho convolutions tn tho s t r d q h i  scpctlon t ha t  attache% to tho tlmqe. '(0 
o f f l c ! a l  m a r t s  or photqraphs  of  i ha  f a i l u r e  were rawtved by Stalnlosa 
Steel Products,  Ww3mtore a m l e t e  descrlptlon and onaIysl9 of tho dsfect 
cannot be (Ilvsn. It i s  mcamrrPrnded on assenhlles or systems t h a t  require 
m l y  a far p f w r u n  hydm+@tfc ).st )hs sddl?lon of pnsarms)lu le& tor) ?o 
+p.olf lc~lon lyqoIc~*l)rr+, rlnoe, a lau nmsbure hydm?a+lc  tost 1s 
less t l b l y  *o chbct the pmssura, ot a very mlnute defect. 
The leak occurred In tho neck of 
I 
I 
As ewgscted on an ssiisesably of t h i s  t y w  tho real d l f f l c u l t I o s  wore encwntar- 
a d  durlng the porqormeneus of the C?&aIificatFcm Testing, 
wem nslnly related to ?he errtr8neous squlpmt med to slnulate nomlnnl 
vehlc le lnstsl lstlarr durlnq 'the testlnq of t h l s  tunnel bo1 Iwa asseribly, I$ 
Is balng mpor)ed beceuso of i t s  slgnif lcanm. 
Although the p r o b l e m  
.,- ."_I_- - -  
funnel Fuel Ton& 
-_______I_ .- 
STAINLESS STEEL PRODUCTS INC. 
2S.O W 0 A N  F C R N A C I W  mLVD 
2 
C A Q K  N O  
j 
t i  S/C OUROANK CALIFORNIA 
OR moeIpt of E.3 .  X)f t o  Spocttlcatlm 60fQ4450, Stainless Steel Products 
W l f l e d  +ha esel flmgb of the tunnsl ballars mse&ly by the Urlllloy! of 
16 hales and +amping *em for heflcoll tnsertlon around the arphortcal 
baerfng surface. Whl le ) h i s  work w m  belng perfofmad, fkerohsl I Spa- 
Fllght Cnnqer blOdftIsd the b a r l n q  by cut t lnq 1 1  fntn four sectlans and 
drf lllng hales which fmcl l l t n f e d  the aitedhmernf of #e four sectlann to 
tho sphorlcsf surflbc~) at the wsI flanqe. 
Tunnel Fuel Tank 
STAINLESS STEEL PRODUCTS 
INCORPORATED 
-_-- 
REVISION NC - N/C ii BURBANK, CALIFORNIA 
BuoklIng from External Pmaoum 
Whmm E Youncp W u I w  = 29,000,OOO 
The arttical hi lure  polnt because of the areama1 loadtnc), wl I I be 
end 0onvolut)ton an either end of +ha bsllaws dm t o  tha carry-back end 
#nmt at the ne& sttadrmnt to thm end f l s n p s .  Thio csndlt lon w l l l  
ceuu a rsduatIm of coIIQpsIng pressurn of 70% result ing i n  an actual 
prrtlerum of 120 psig (dotarmlned from pmvlau9 t o r t  dais). 
Cot teprtng dtorac)er1stlc of f i e  bal lcvr mdu or end  attachment olseves 
has been mslntained by capptng tha bllaws necks over f h m  e n d  attach- 
mnt tlmges thus sllowlng the and f Iemg~s t o  support the Irrposed load,  
e 
STAINLESS STEEL PRODUCTS 
INCORPORATED 
BURBANK, CALIFORNIA REVISION NO 
4 
F:/C 
30 Y 1.2233 
261 lbs/ln. 
t ,01835 Inches 


Bellows, tunnel fuel tank summary report

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