TTAIdITH AUJOI MI 964

1$ 0,011. It. 7,11,

1~uiW~~lii7i ~i~IImP VII

554

SUB 1964 PAAI ° K

Dimmtri uti

V L. JasG. 19. Jail

J .lG~

(3)

D. R. C meA.

n N .

ml

Im?A'JiIRIRI I]

Il 1164

mmmm~mam,mm 0

596-1 6l J. 114 . ago mania n 596-169596-161 N. . Spencer 596-16%,596 4 60 R. 'W . r 5964 6596-161 Q. J . Wwidenimll 594-170596-165 L X. O mmtt '596-1 696 81 LET a iamo

596 4 86

ICTIIr

BNA00562890HDMSp01755963

Table IFACILITY MALFUNCTIONS

t1'au1la,aauu 1 916 4

Ve- weFaoi11.f@y Percent ?a 1 1y:1, .a,aal; t;ca~mul,m~, 'mt,V!e .,„....w

02A 0

Alfa 2B la wAlfa 3

Total

Bravo IDBravoBravo 2BBravo 20Bravo 3ABravo 33

Total

Canyon 1Canyon 2Oxon 33

Total

HTSVT 1T TS ma

YTS 3pAYTS

Total

Delta 1 A1 B

Delta 2ADelta 23Del-ba 0

Total

R8/S FB 1 AS/rAFB 1 B-1,

11sAAF 1 TPB 2A-1

',AF- B 2A

PFL TotRS/Ps B

Total"T

00

Na

16 O. 0

22 0 0. 04 0 040

10, 10.0 1 EA.0 0 01. 0

6 0 0. 0-j

43, 1 2

19 1040 11 3.2" 1 EgI,uihiw 012 304 1 I.S.M- 1 Inat a 1 H.S .60 5 8.3

10 3.0 3 Equips.20 3 1500, Equip.16 0 0.

00 0 p0C 0

40 C

1 0

0101 0 0 0a 0

.04

7 0 000--L-

20L

0.0

12 0 04 012 803 1 Equip.

6 1 16.6 1 vast438 11 2&,9 10 Equip . ,

185

253

013

00

.N~d04 0

I

1 m 1

12 6. 4

25 9 . 8

I IBNA00562891

HDMSpO1755964

i } tATT

iT }t f

!TVV

all

ry

own rt ~t 3 t + t

A -~_ }1

T Y(T

: t.T

P~

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-At P+

t+ 1~~ x

i

t

:I

. . . .1 ~

,4t+ t .Sr .

;T

tS 3 a r ts a" 7 ! { .

WE 11- H« + } ., -

1 .s t r+ Yt rr

x r 45„

!

Its E` f ref zr

! '$+~ ' is

7

IG ; «r+ ! t

1Sly~

iLt{r r

1.~'"x ; 2 1'r+ t ..}'* #'' o,br t#T `i •~ 7 .tr. . i. . .! '

4..

_]~?~~ ~t a+ $ l:+i alt fir : F t ,a rY

3

1 1 { - ~ ~ t r 1..'-

. ~ ~!} 1- "

4_ xIh ~,r + , F + r+ y - .r!~ !

2.

i J ; u r r i 7:t :} r• y L T ?

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:.__r }x rT I A - .

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t ~# xil

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'T + 77: S t ?-EA +

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"+ t . . . 6 't c a

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t .b t ! .1 $rt ; ti` +s.. }',I 4 1

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Ln_ ,

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x .i

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}

k r, rTa }i$x T ! 1~T

r

.fr ' 1 t 1 r -,, ;.: 4 +i+ ,}rT , :t E`I'! 'r

: T x C Y * y FA.wyo

.. . .S

1r Ek'

r T} tt.

f

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kY ; 1

r rtly2'~1 Y "~.t +

{ I11P Sr ''r &«+ .ly

.

(+

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xy

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s . ~

'r'

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•

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l+ {11 : t w. .t { E }'. .t}.S xy •t, { y t t t }~~

i*1.: < 7"1 ~'~ r } .:1 ..}'" 7''

* s 1C1.ii t

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11 t! xi7 ~ ri 7 1 r ''

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" 1 T' Ai t + 1 + 4 Itk + i + ! + }Af_ ?a t t .r r.MTrr i .. z*

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e~r tr k !! rt *i r r r~1 t ;r

in tt1 ! . . t? , a

Fr

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1

RIIMF. .i

T 1

lo tt

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r9. C I77

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tt tTr i 6

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t t+ ra tlti a t 1a r 1 { 1 x t ? tt F i. oi l!

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: T $ xrl f FsT!t T ~ ~ ~~ I

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7`.4 ~ C 1

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t

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I I IBNA00562892

HDMSpO1755965

ToPTT; R . ,, Riddle88

hj ota« J'a smuam 1964 Taa ility D~am,1AMOUciaa auvmt61m

1 .2

am

aimOn

am

ILE

m 13-2e ll 6to to fa'ul 'ai ' m OtIJE, ;IIGIr c lllu~!!Il i!Ill~luluuNVuaml ' nati' lvs 1 11 xe t IVVIIUelIV 116°

44WPJI~~'iVigCm~~°"06mllll~ll~6 J°cli~!1161,

1AonU 1111A.,.

ill be I'll, ~nValtlll"~!ocVll', a;~o~ 111j, 9fll'1 iIs1IU1sT TMOIuu du a disfIll1l',r1AII ,1111111IIIrllll l+Ti~ 'f l::I~iNl u

iI

5122-4-6065TAP to 1 a 000 ; a i 11~i1W1r„' aamd ',';)' fe Ill '.Ili, a aJst40are ammahedt .ed to i'uma LammiLvmaswsd onus 14 11of Iraa n° ioado and epB loatiocm ammk'the oaamderlm: intovamssaaetias n 'dUU be 1 IfivWl esr

0

maa

teed

amp sum

Mad

et YB4A &%tributed 'tam an 11JI"7WIs t aauat c '4f t" I MIN,

At tbie Meet; l.flW Group 1 m'6 2mo evaacaala talmJvm'am a'.i.sol ass"m, Pllaa~mimmaGylmVmes of the pi were M e-r saoemmmm lm t am d otbaaer , o m asaamacughout feet Ivy Group 1

aMM

men

ntLmmipat¢ad that lnitismal,o amnr,r e.11 ttbri-ie vamamevaemmi.' aativa sosmmm,GCasirsas gmam will be step tau' aar°siva term imamiaaaa )a uto'

sort attributed to ovaua- a1a9lCaa~r . em amipmee unt .

am

saa

ms

Lion VA I

seaasJected to ex' blag "B" nuts with

vered in , +44ad It Is

mendedpurchase now bla

it®4 I alfu notion vla the resul t of a failure of the hot TG9Camacrosua+Lmsmaclamp the-31-1 tsarbopa p turbine exhaust. A bolted flangedowign has been uo m feted 'hat '' .w asliaticmn was held up pcanusdinreceipt of special BefiomE seals from the vendors .endors . These smsea l. ehave just been delivered a d will be used in early to ate onBrava 'La

dtypic

vibration So ee and o C.ering i

7 o ' The bent rerstood that the a

radii so that it vlrJLlifor tube banding

amamv aa' =J.LLW Jii $ p$p *16IWmm

V, ~u~ll9amb uolaralvm all-0I~Bi iIrllV"I"9uaple~l p%1)0 ppl e91. aJ,1%1lsso9la l

1C; pC'autwam,u aI, llsus ;am1uc91Ci i'sum II{ ,aunt m a ~~myl ~u a~uuu~u~IVauol ut

vibrating looseIcted with plumb.

been wmi sell" la aok-rea Lion has been

mdg wee Puma' nauuasmoad lxUrdi,A'smarad ad1i r'mlucomtat he necessary to

pt for very specialized

1

6 1V~auluro 1 1915,111411; s~lllllmj~ '4111.1

I F IBNA00562893

HDMSpO1755966

1 ® 5

I's

SO

has Owl w ed ;Wed El nao v velthe n air v .°a p

:re er Valve 4 FA. dma l ladaa atii bt y 09 . l W is ° ed

M&A

tcz' awd there oa,a mT' :~a~ Q 1')~C' 41! i"~G9U~l ~

°1V 1',111X'°qIu~4!!m wwad°waa~ a'vs : ,1V :°,1!~uUC'~I~~~N~

y :for this sort of U,a t N o lE d ac18 v °a ♦rl`1 ad odd aWwwaaCh mane"':I':U~III" f'Imi , 'd "JII^lJ

aaP,°a°YPlalP:ilw''iiu~, IItNU °!'a"8d.iwml In tho :a°dadwdmaes"Wd,ah has some minor dbft ;x~, l d" . exler-

M

a s

an

a

Ou

aigis

a

sm7 thepaa..dm'awda

asaj

aau~

U I

qwa e

lmits

m mama

i

P

I

am

¢a

a aaaC021 a,a ladwdamause m 1 nid a a aa d ~

.saramrvulltdad ;urea teet tat the Uo ~ 91 ;,alma

the Iwaar~sm v .1dwa oaw'se is

,pp,,~~

t testiat dloa°at16 vvii'

@~P~i ple t

0

aM

u

Sawe

aawag

bY0

mu

at

in&

deas

0t

theBadf4 fl

s

iISO

dI

"iciest reet rdedii~a cat pressure

dmawa~sI sea°tiolL alt wasnk vmw nt valve anmel.u

P)jramrIt was alsohave, stria °, 'Rii''iLd t9

tldasaas asImaG

mont la ha'au,'''~ atff ae iilaVa'la .f

eed restt,al,ctlarmnoozed iona wvi

cara•atiOn find,: nsiidmaakion,

setsu ti

suspected oti n@

1a ht that possoutlet Swabl rvalm

d dditlcmei data nowtle , a

regard to the is'Lted make reammen d

Test was terminated aftsecond -test . - Preendsawda!ldliaradar valve over tsafe d ,adjueateplaced the asused with v alltaatroubles There

alternate valve befrom espaa~blio . Thesesuitability suitability in the a

not yet been propIt viii cover the

the dire

a been rblivered frees Laaadmi gad w was amdue for teasmtaa to awamulw amal@ th

licatiam

a

do

rca

su

t

doyetbloas h

55

a~ on

lowv t arotlaw imnitiawo tf6 wa~sad a

am

inde of a scheduled 600

g was initiated a ezetdmd cutoff through through h a fal l

result of an imp eport em. Group 1162 has re'with a solid state daa io•appears to ellminate the

ace since this oorrsot:Leawaa *

aawv ww~~P~,~~l~!!IL?ud ~

test operator wasvasthe single test .test request shewashould not rely a:It we planned inn

set red line eu fuelX sd line was aincorreworking f are two diffIt has been eased thdi be provided for ewveprevious test re•mww~

,t a bwulletin for the .peat Tough a evewed but, Will be tar-1nt ~"aNamn 'ac acnw 1 "amnmoa+ 1

55

aa', trot

tidwn in -the test duesap ballaance pistonly set beawaaaa's therest DO doouweentaas ft a single doomen'ty test and that it

UUM

went rap t pe ^ led.

quests should astaasa dat set p

tl

ui

u1I_ f A

i i I IBNA00562894

HDMSpO1755967

Too ~ . R. Nichol, F . F , . TwightFrom: R. J .a Riddleaabar°ger 6 March 1964subject; January 1964 Facility Maifuunaction, Review aae a 4

1 .9 Test was ciat off by a broken aacceleromete rm load which caused an inter-mittent signal-to a RCC device . Initial corrective action was re--placement of the cable with follow up to have been taken by Group 161 .Group 161 advised that the study is continuing and It is thought thatlikely the replacement cycle for the acceleromoter leads may be the aged .The cycle probably will take into account local conditions of the teattend such as exposure to blow back fires sank a, vibration , firex, auto .

The follow up letter covering the corrective steps W13 be ieauvu ad to theGroup 1 :61 'IT" house personnel,

R OW nuo recauui

1 .10 This malfunction occurred when the main oxidizer valve did not openuntil after the booster cutoff asiagaaa l4 The trouble was traced t ointermittently operating, 1gastaat time . . The immediate oo.rrectioreplacement of the A astaaat The -t ouuble has not recu rred . The long

correction for this andand other similiar malfunctions will be docu.d An a plan presennt3 r being or°muulated. It involves replacement

of all aastata in Large Engine Tent operations with subsequent re-placement every four years As these replacement A astatss are Leanedfrom the Instrumentat ion Lab a four year decal will be affixed win dwill indicate the time for replacement

1 .11 The trouble was traced to a leaking oaK' seal between the Taber tra Lmnducear and the flex line measuring gas generator chamber pr°eszwe TheQ0i a4 se l had been torqued to t he available specification but not to thelatest addendum. Subsequent use when properly ' torqued In accordancewith the latest addendum has eliminated the problem .

1 U

1 .12 LOX tank pressure tealined 275 psi during maainstaad;e operation . A newregulator system was in use . A recovery to the scheduled tank pressureoccurred only at cutoff. The problem is presently being studied byGroup 162 . The old control system was re-installed after this test and

presently usable . All problems with the regulation of the LOX systemare being studied by Group 162 .

No :Follow uuua reo'a,nir.

I I I IBNA00562895

HDMSpO1755968

To . W . R. 'ichaiw F . A Tw1glitFoam -. R. J . Riddlesbar e'Subject-. January 1964 Facility Malfunction Review- - - - - - - - - - - - - - - - - - - - - - - - -

2 .0 Ma -aility -Malfunction __'Revi w

2 1 TlA4'4 OO1 Brava`o-2l3n q g , MILt

6 1arch VD-64,Page 5

which was scheduled for 13O seconds, was tafter one second main 9 °leave open position andfacility armed toggle

rrninatedghean the LOX dump valve failed t o

uated the cutoff circui t. Thtch was not actuated when requested by

iticnna The console operator hadthe test conductor prior tonly recently been familiarized AtThe over sight was not found until

he console operation,he cutoff . The immediate

fix was a more rigorous training of trequirement for the test conductor

orator and thee each switch aactw-

uaati annm The subject switch has now been included in the prepcomplete circuit . A long range fix will be modification of thetest console to improve switch layout and make the operatio nore efficieswto

low u

2 .2 Y 4~C7O6 arwnnvraan 1~1 ~6~f. alwuiwaa~en t

The tes was Project First operation and was lost when theAgastat timer controlling a bomb firing malfunctioned. Theimmediate corrective action was :replacement of the defectivetimer. Long range action referred to 596-161 . This 'Was avery old d gastat and had been service for years and add-itional action has been discussed in Paragraph 1 .10.

ollcwr roars recap d

2a i -g D1 Can ram J -2- il'„,, nn er

The test scheduled for 40 seconds was terminated after 3.seconds when the fuel pump in let prmesssure decayed below Itsred line value . Several changes in the standard EIA countdown were made by the 16 and test engineer. In the processof mak ing the changes the fuel tank vent closed step was do-l.oted in error. neither engineer notlcazd the error prior totesting since the previous system had maintained tank preasuxeabove the minimum red line values prior to engine start .. How-ever, when fuel flow started the tank pressure decayed belowminimum red line value. The corrective action is that theE IC or Performance Monitor will initial any change or deletionto the countdown check list prior .to each test a

follow u

2,4 CIOm caa~nny onn 1 -14~®64~ llwaaaawnnn roeaa

The test was lost after 2 .2 seconds of a s heduled 5 secondby the thrust red line chart observer. The red line bad

I i IBNA00562896

HDMSp01755969

Tara W . Et . Nichol, le. F . Twightr14rsrass Lr J . Riddl.esbarger 6 Naarc :a 19,64Subject . JanuaryTM 1964. Facility Malfunction Review Page 6

been set on the io strip chart at 994. chart divisions . Cutoffwas initiated at, 8 9 chart divisions . The nature of the red linefor an L&H strip allows for a parallax effect in reading if theobserver is not directly in front of the instrument. Also, dueto the limitation s of the test stand structure it is of consid-erable concern that thrust is not exceeded. This results in acertain amount of anxiousness on the part of the red line ou1l:C==server, The corrective action was for counselling of the chartobserver end further consideration as to the proper method ofwatching the L&N red line .

follow uu1 .yea ui ward

2 .5 ° N f . '®4 0 _ OA _ _ aa_ ' r a a a M EL _ 1 - 1

The subject test was terinin : ted after 1 .7 seconds of a scheduled155 second manna The trouble was in the use of a Datarite pramce ,~sor0 The paper going from the Datarite was damp and duringthe static conditions between -20 and "Charts fast on", thepaper dried and stack to the metal editing table . Because ofthis the recording paper could not be taken up on the spoool cThe sticking paper was not noticed until one or two seconds priorto ignition start, By the time the test conductor became aware ofa request to hold, the start button had already been depressedand the test was immediately cuts immediate corrective actionwas to coat the surfaces of the editing table with wax.

Long range ac tion - the problem was referred to Group 1610 Theircomments were that waxing the table was effective in elimin-ating the trouble, however, the Datarite, ors properly ucod, willnot cause tnis trouble „ Control center procedures consistent . syinclude a quick inspection by the operator of the paper comingfrom the Datariteo Even with the sticking paper there had beenno real justification for teamninnaatinng the teat except 'that, inthe rush of the moment ,, the situation was not properly analyzed,The worst thing that would have ha,.pcr~nnsd was that the paper wouls'dd',have ended up on the floor and have to be collected after the run.

It appears that t is malfunction should more probably have beenhuman error . It was recommended that control center personnelreview the procedures for Datarite use.

ows . U13.. ..r

2.6 912=4=00 cln 1-1 ror

Test was tern hated after 5 .6 see°rouds of a 155 second operat ionby a thrust :?.corder observer. This is the same -type of malf"`aanctionnas discussed in paragraph 204. Long range action suggested Lato procure -id install an automatic cutoff device for this parameter

°cul V cws wn ro;cci_.

I I I IBNA00562897

HDMSpO1755970

To:From ;

W 0 R . Nichol, F. F . `NightR „ Jm Riddlesbar° er 6 Mach 1 964

Subject : January 1964 Facility Nbalfunction Review Pa ,e 7- - - - - - - - - - - - - - - - - - - - - -

TM7 .4 001 - 1-6-64'7-4-t 16 1-24-6

Saluuipmexnt1 AY J 2AA

These malfunctions were terminated by malfunctioning :1"eel tankpressure regulator servo system. The long :orange correctiveaction on these and other items of the pressurizing system ofthis test stand are under investigation by Group 1662 . Thecause of the malfunctions was find to be that the servo valvecontrolling the fuel tank pressure regulator valve failed toperat

Follow 'an requized

2 A 'B47-4-002 1®7-64 Equipmentd° 01 6 ® =6 A`W 2A-1

This was a check an an F-1 injector using explosive pulsetechnique, The LOOX main valve did not open in sequence ofa satisfactory Ignition stage. The LOX main valve preasua rswitch malfunctioned ., Immediate corr ective acti on was a newswitch was installed 0

The second malfunction TW74-013 was the acne type of malfunctionand a new switch was instaal ledm .il°' urther corrective action willbe in accordance with the discussion under Paragraph 1 .1 4

2 .9 The test was terminated at 1 .3 seconds of a 1 . second r ui .The objective - injector evaluation using an explosive pulsetechnique. Test ilwrminaated because of erratic fuel pump reulctionno The trouble was traced to a cracked inner race on thebottom bearing of the fuel pressure regulator . 596--162 Isworking on the problem and the bearing will be replaced by aaaheavier type and monkey motion actuators will be installed anthis valve

rl.gl.low tip .1,e ' g

2 .10 T H7-4-004=17-4-005

-64 Equipment,_64 MOB 2X11

No duration was attained of the scheduled 1 .5 seconds for eithertp .LOX main valve failed to open and it w discovered that

.LOX was leaking into the seat retracting caveity, of the LOX uau lva'•e0This caused high vapor pressure which did not allow the electricalconteccts of the seat praa=re ,switch to close. Sequencing requiresthat the retracting seat be retracted prior to valve actuation a

e LOX leak did not allow the valve to perform this sequence 0The immediate corrective action was replacement of the LOX main

lye

low u,n

I i I IBNA00562898

HDMSpO1755971

Taan U . L Nichols F. P . TwightFrom . . J . iddlesbazrgerSubject ; January 1964 Pacility Malfunction Review- - - - - - - - - - - - - - - - - - - - - - - - -

011 7 4=006 1 40=64 EAFB 2A-1 Soul

6 Maar°ch 1964Page a

The test was terminated at .45 seconds of a 1m5 second ruza,The objective was F-1 injector evaluation using the explosivepulse technique . The LOX tank pressure regulation was erraaticnThe hydraulic system of the LOX pressure regulator valve ismarginal and this is where a malfunction of the pressure con-troller was the cause of the malfunction . A slight hydraulicleak was repaired and the coautroli+sr was reNlaaoed with anlternate desiamnn. Group 169 is continuing an extensive eval-

uation of the entire pressurizing system on the test stand .The plan of action for corrective action is 1T224=5126 0

Test was scheduled for one second to evaluate tube burningcharacteristics of injector #O8 M The test was terminated IYYthe sequence fail cutoff device when the LOX igniter pressurewitch failed to pick up. Immediate correction action was

replacement of the pressure switch . The long range correctiveaction involves replacement of all switches by the proper modelCustom Compoents units as discussed in Paragraph 101 . ,

241

Test was schedu le' for 11 seconds for the purpose of 7C- 1injector evaluation . and was ternina.ted by observer when the LOXtank pressure decreased rapidly . It was found that the LOX andfuel pressure controller reference voltage potentiometer

settings were inadvertently transposed when an adjustment insidethe X15 was made to satisfy a test request change. Immediatecorrective action was verification of the , ; oblem by data exami.nation prior to conducting t1w next test. Long range cor-rective action is that no cha:.nn es to the test conditions willbe accepted from Development unless the test stand reverts back

the 1L-60 if the test request change is requested luter thanX-6O®

lsYo follow unn a^eaaun i

2 ..14 TK7-4-021 1-31 ®64 k F 3 2A-1 chit

There was no duration of the scheduled two second r un for injectorevaluation. Test was terminated by sequence fail cutoff devicewhen the sequence detector link break signal was not de l':o ected . ,Malfunction was found to be caused by a ground in the signcircuit as a result of charred insulation on the stand wire,Immediate corrective action was replacement of the detector leadsand long range action requires that a stand wire ground check ofthe ignition detector circuit will be added to the countdown sheetand checkout by a light on the facility console .

No fo ,lass as a sire

i iI IBNA00562899

HDMSp01755972

To ; Y'x " R . bdichol p F. F, Wight

From. 1R., J . RiddlesbsrgerSubject : January 1964 Facility Malfunction Review

---------------------

15 '14 - 1 -1 .6 , 'AFB I, -1 E

gM'oroh1 64Page 9

The test was terminn, ted after two seconds of 150 second runs byAgastat timer used in monitoring a red hone chart at the controlcenter. The timer was set to terminate the test 5 seconds afterstart signal if the parameter was cut of normal operating limitsPost test the malfunction could not be made to repeat and subsapient check cuts of the Agastat In the Instrument Lab offeredno further help .

The cause of the malfunction is unknown, however, the Agastat wasreplaced. Long range corrective action will include investigationof the feasibility of replacing the rmuni 'ti gsas°tat as a^setam Withfewer Agastats or an Eagle timer ; also, the Agastats will becamea part of the preventative mainten

low army rams

Test was terminated approximat ewhen fire was observed in thewas traced to a leakwas found that thisHP 260-1002 boss„the ridge wash

P Is

do into a 150 second rungenerator area. B le malfunction

the photocon oohd wash

diante corre,s 01

#3 ridge washer, It.was incompatible with the engineaotivn'e action was replacement of

rrective action the ras ' .Laeai was>e referred to596-161 for coordination with the Snnginc; oausign Groups, aalsom Test,personnel requested F-1 MD to increase the diameter of the Wasspot facing so that the proper ridge washer could be used.

17

Test was terminnated, during transition when the LOX main valve failedto open . The engine prep complete light dropped out immediateafter main fuel valve opened due to failure of a sequenced bun .Troubleshooting of the system showed that the power bus received no,power in sequence . Review of the sequence recorders indicated thatone of three relays could have caused the problem ,, The nmalfwnctiondid not repeat itself so that the faulty relay could not be isolaated4Immediate corrective action was replacement of all three relay's.The trouble bas not recurred. The relays were sent to croup 161, andthere ham been no report to dame,

al low wnxn nrec!uni

I I IBNA00562900

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To :Fromm

6 ,, R~ Nichol , F. P, TwightL Jo Riddl. esbaarger 6 March 1964

Subject; January 1964 Facility Malfunction Review 1'age 1 0- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

218 TM1-4-003TMl -3004

1-3-64 R.TSt

in Malfunction #003 the problems was the GH2 misaile regulatorremained 10(7 open throughout the test m In Malfunction #004the regulator remained closed during the test .. It was foundthat the power supply of the controller servo system is ofmarginal capability and this and other system shortcomings areunder investigation by group 162. A solid state controllercoupled with DSO pick ups is expected to alleviate the situation .

2 .19 2M1 0 4 ~ ! 4 __W3 1i__

The test, scheduled for 1 0 seconds, was terminated by ABIignition cutoff timer after the ASl pressure switch failed topick up . Investigation show ed that the ASI LOX injectionpressure was very low resulting in low LOX flow and chamberpressure. This low chamber pressure was not sufficient to pickup the pressure switch and the cutoff cccurred0 It is suspectedthat the LOX bleed did not close com l lately ., thus accounting forthe low LOX pressure to the AB!. The valve is a relief typemum where the closing snide is spring loaded. Immediate cor-rective action, a micro switch was installed . This micro switchis adjusted so that the valve must be completely a lcssed to lightthe red light on the console prior to, a test

L ctive action is that all valves of this type onthe test stand will be removed and sent to LL0 for ese avicingalso, they will be modified to accommodate a pneumatic pressure

the closing side of the actuating piston .

i :r

2.20 iMi 1-1 V"TS'm p aRorsuui:xamn

Scheduled 10 second test was terminated during Ignition etaby the gas generator ignition delay cutoff timer when the g

top igniter limas circuit did not drop out . The cause wa sd to be a squib which shorted to the case which resulted in

current drain of sufficient magnitude to prevent the two ggenerator igniters and the overboard igniter from firing. Pre-test check of the igniters revealed no discrepancies . Immediatecorrective action, replacement o f igniter

For long range correction, it is planned a GL I,,) torch on the over-board line will be Installed which will prevent a recurrence ofthis malfunction. The GH2 igniter is installed and there hasbeen no recurrence

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I I IBNA00562901

HDMSp01755974

"0 : Vn R. Nichol., F F TwightFrom R , J ., diddlesbargerSuah jectt January 1964 Facility Malfunction Revie w

2 . 2.21 T111 1 -4-9 f U lie M-8111

The test was schedu led for 10 seconds and was terminated after1 .6 seconds due to fire in the gas generator area . The causeof malfunction was traced to hot gas leaking past the gas gen-erator body to injector asThe seal had been Installedit is expected that, the bolprolonged use a in

6 March '1' 1364Page it 1

floxitallic seal had failed.ty-five previous tests and

iocinfs had loosened clue to

Immediate corrective action was replacement of the seal andinjector, Long range corrective action will involve a monthlyperiodic inape ::: tiacn of the slave equipment and will includetorque check of the bolts.

follow uua) re

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