From: To:

Commanding Officer, U. S. Naval Ammunition Depot, Crane, Indiana National Aeronautics and Space Addinistration, Goddard Space F l ight Center, Electrochemical Power Sources Section (636.2), Space Power Technology Branch, Greenbelt, Maryland 20771

U. S. NAVAL AMMUNITION D E P O T

7 7 - 4 C R A N E . I N D I A N A 47522 IN R E P L V RFFFR TO

@wE2-HMs :'oc 8900 Ser QE-2209

Subj: Monthly Progress Report on National Aeronautics and Space Adminis- t r a t i o n Space Cel l Test Program; submission of

(1) Monthly Progress Report as o f 30 September 1964 (3 copies)

The progress report f o r Xdcional Aeronautics and Space Administration

1

Encl:

1. purchase order Wll,252B on the space c e l l t e s t program,is submitted as

I

enclosure (1). _\2_. - /-*

V. YEAGER By d i rec t ion

copy t o :

NASA, S c i e n t i f i c and Technical

NASA ( M r . Ernst M. Cohn, RPP), Washington D. C . 20546 NASA ( M r . E m i l Hymowitz, 672), Greenbelt, Maryland 20771

P. 0. Box 5700, Bethesda, Naryland 20914 Sc ien t i f i c Information Officer, Defence Research S ta f f , B r i t i s h Embassy (Wing Commander Cherry), 3100 Massachusetts Ave. NW, Vashington, D. C . 2 0 0 ~ 8

REP RQT-20238)

[NASA CR OR TUX OR AD NUMBER1

https://ntrs.nasa.gov/search.jsp?R=19650003547 2019-08-07T16:05:40+00:00Z

MONTKLY PROGRESS REPORT THROUGH 30 SEPTEMBER 1964

LIFE CYCLE TESTS

1. Sta tus of Cycling Program.

a. Tota l number of packs cycled t o date - 98.

(1) F i f t y 10-cel l packs and 48 5-cell packs.

Tota l number of packs s t i l l cycling - 77.

(1) Forty 10-ce l l packs (I'Tickel Cacimium) . (a) 11 General E l e c t r i c 3.0 ah packs.

b.

1. One pack w a s removed from t e s t as s i x of t h e 10 c e l l s i n t h e pack have-failed.

I '. I '

(b) 9 Gould-National Bat ter ies , Inc. 3.5 ah packs.

1. Three packs were removed from t e s t as s i x of t h e 10 c e l l s i n each of two packs and all c e l l s i n the t h i r d pack have fa i led .

( e ) 12 Sonotone Corporation 5.0 ah packs.

( a ) 8 Gulton Indus t r les , Inc. 6.0 ah packs.

1. Four packs were removed from t e s t as s i x of t h e 10 c e l l s i n each of t h reepacks and seven i n the four th pack have f a i l ed .

(2) No 10-cel l packs (S i lver Cadmium).

(a) 0 Yardney E lec t r i c Corporation 12 ah packs.

1. The two packs were removed f r o m t e s t as s i x c e l l s of one pack and a l l ten-of .the other one leaked e l ec t ro ly t e .

(3) Thirty-six 5-cel l packs (Nickel Cacimium) . (a) 13 General E l e c t r i c Company 12 ah packs.

( b ) 7 Gould-PJational Bat ter ies , Inc. 20 eh packs.

1. Five packs were removed from test as three of t he f i v e c e l l s i n each paTk fa i l ed ,

1

( c ) 1 Gulton Indus t r ies , Inc. 6.0 ah pack.

(d ) 2 Gulton Indus t r ies , Inc. 50 ah packs.

I

Enclosure (1)

.A .-

- \

(e) 7 Gulton Industr ies , Inc. 20 ah packs.

1. Five of these 5-cell packs have been removed from t e s t for f a i l u r e s of Three o r more c e l l s i n each pack.

(f) 6 Gulton Industr ies , Inc. 4.0 all c m z e r c i a l packs.

(4 ) One 5-cel l pack ( S i l v e r Zinc).

(a) 1 Delco Reny 25 ah pack.

1. One pack w a s removed from t e s t as a l l c e l l s fa i led . - 2. Test Parameters.

a. Ambient Temperatures:

(1) 0" c .

(2) 25" C.

(3) 40" C.

Voltage l i m i t s per pack on charge:

(1) 1;55? 0.03 v o l t s per c e l l a t 0" C .

( 2 ) 1.49 k 0.03 vo l t s per c e l l at 25" C.

( 3 ) 1.45 C 0.03 vo l t s per c e l l a t 40" C.

(4) 1.97 k 0.03 vo l t s per c e l l a t 25" C on the s i l v e r zinc pack.

b-

e. Depths of Discharge:

(1) 90-minute and 3-hour orb i t s :

(a) 1 5 percent and 25 percent at 0" C.

( b ) 25 percent and 43 percent a t 25" C .

( c ) 15 >e:cc11~ and 25 percenx at 4u' C.

(2) 24-hour orb i t s :

(a) 50 percent a t 0" C , 25" C and 40" C.

( b ) 40 percent at 25" C on the s i l v e r zinc pack,

d. Orbit Times:

(1) 90 minutes--30-minute discharge and 60-minute charge.

2

- 1

(2) 3 hours--30-minute discharge anU 150-niinute charge.

(3) 24 hours--1-hour discharge and 23-ho~1.r charge.

3. Data.

a. Normal operation schedules complete data t o be recorded on 90-mimte On 24-hour cycles, complete data i s taken

I

and 3-hour packs every 32 cycles. every eight cycles.

b. The at tached data sheets give end of discharge and end of charge vol tage readings fo r each c e l l on each cycle recorded.

4. Cel l Fai lures .

C e l l Type

Fai iures Total September 1 through .Failures September 30, 1964 To Date

General E lec t r i c 3.0 ah 2 16

Gould 3.5 ah 5 37

Sonotone 5.0 ah 2 1 4

Gulton 6.0 ah 6 48

General E lec t r i c 12 ah 1 2

Gould 20 ah 5 17

Gulton 20 ah 2 22

Yardney 12 ah (S i lver Cadmium) 10 16*

* Six f a i l u r e s were omitted f rom previous report .

5- Ce l l Fa i lure Analysls.

a. All f a i l u r e analysis r e s u l t s are. cumulative. These results are shown i n pages 4 through 19.

6. Capacity Tests.

a. P r io r t o cycling, each pack was given a capacity t e s t a t i t s respec-

After each 88 days o f t i v e cycling temperztur-e. followed by a c / 2 discharge t o 1.0 vo l t / ce l l average. cycling, each pack w a s discharged at t h e c / 2 r a t e t o 1-0 v o l t / c e l l average following a charge at the cycle ra te . c/10 r a t e f o r 16 hours and discharged a t the c / 2 rate t o 1.0 v o l t / c e l l average. l imi t ed t o t he cycle l i m i t s . 20 through 22.

This check consisted of a c/10 charge for 16 hours

The pack was then recharged at t h e

The pack w a s then recharged a t the c/10 r a t e f o r 48 hours, voltage Data o f capacity t e s t s i s tabulated on pages

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€%RCENT DEPTH OF DISCHARGE

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40 . 1 5 25

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AMPERE-HOUR CAPACITIES ON PRECONDITIONING CYCLES AND CAPACITY CHECKS

TEMP. 0mIT DISCHARGE AMPERE-HOURS* - "C. PERIOD (1) I (2) I ( 3 ) I ( 4) 1 ( 5 ) I ( 6 ) 1 (7 ) I I i

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* (1) Initial fieconditioning. ' I

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'in parentheses. Capacity check after First 88 days of cycling, Ca3acity check after SeconC 88 days. Capacity check after Third 88 days. L%+GSGy- CriOLk Q.L'fr.;\* T L W ' L I I 03 uajo.

chock after F i f t h 88 dnyc.

(e Still at 50" C.)

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PRXCONDITIONING CYCUS AND CAPACITY CRECKS

PERCENT DEFTHOF TEMP. ORBIT DISCHARGE AMPERE-HOURS*

TYPE DISCHARGE - "C. PERIOD (1) 1 (2) I ( 3 ) I ( 4) I (5 ) I ( 6) I (71 Gulton 6 A.H.

Gulton 6 A.H.

G.E. . . 12 A.H.

G.E. 12 A.H.

I 5

. Gould 20 A.H.

Gould 20 A.H.

1 5 25 25 40 1 5 25

1 5 25 25 40 1 5 25

1 5 25 25 40 1 5 25

1 5 25 25 40 1 5 25

1 5 25 25 40 1 5 25

1 5 25 25 40 1 5 25

* (1) Initial Preconditioning. . (2) Preconditioning at Change to 40" C. Number of cycles completed at 50" C. is in parentheses. Capacity check after First 88 days of cycling. (* S t i l l at 50" C.) Capacity check after Second 88 days. Capacity check after Third 88 days.

cnech a:':ar z ~ u r t r ~ 00 aays. chock aftor F i f t h 88 dnyn. ic le

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AMEFE-HOUR CAPACITIES ON PRECONDITIONLNG CYCLES AND CAPACITY CRECKS

PERCENT DEFTH OF DISCHARGE

1 5 25 25 40 1 5 25

ORBIT DISCHARGE AMPERE-HOURS* PERIOD (1) (2) I (3) I ( 4) ( 5)

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TYPE

Gulton 20 A.H.

90 Min

Gulton 20 A.H.

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15 25

io: CYCI

Yardney 12 A.H.

50 50

Gulton 6 A.H.

50 24 H r s 6 .60 3.55 I

G.E. I 2 A.H.

50 25

* (1) I n i t i d -econditioning. (2) Preconditioning a t Change t o 40" C. Nwber of cycles completed at 50" C. i s - -

i n parentheses. (3) Capacity check a f t e r F i r s t 88 dzys of cycling. 4) Capacity check a r t e r Second 88 days. 5) Capacity check a f t e r Third 88 days.

(6) Capacity check a f t e r Fourth 88 deys. (7) Capacity check a f t e r F i f t h 88 days.

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