MSFC skylab mission report : Saturn workshop by George C. Marshall Space Flight Center.; United States.
By George C. Marshall Space Flight Center.; United States. National Aeronautics and Space Administration
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Some of these were replacement and e l e c t r i c a l continuity t e s t s of the heated water dump probe; disassembly, inspection, and replacement of laboratory tape recorders; removal of four printed-circuit cards i n s i d e the video tape recorder; r e p a i r of an ergometer pedal; i n s t a l l a t i o n of the supplementary r a t e gyro package in t5e docking adapter; and tightening of t h e chain linkage on t h e a r t i c u l a t e d mirror system f o r one of the experiments. On Day 91 a saturated control gyro r e s u l t e d i n temporary l o s s of control gyro a t t i t u d e control.
Marshall Space F l i g h t Center was asked t o conduct a s e r i e s of a n a l y t i c a l s t u d i e s t o p r e d i c t t h e e f f e c t s of what was hewn from t e l e m e t r y . These a c t i v i t i e s i n cluded p r e d i c t i o n s o f what t h e t e m e r a t u r e s would be i n t h e f i l m v a u l t s , t h e food l o c k e r s , and t h e medicine c o n t a i n e r s and what e f f e c t high temperatures would have If on t h e polyurethane foam i n s u l a t i o n bonded t o t h e i n n e r w a l l o f t h e workshop.
The t e s t i n g of t h e package of six supplementary r a t e gyros, c a l l e d t h e "six-pack," f o r i n s t a l l a t i o n by t h e second crew, was already in progress on Day 60. Three u n i t s were b u i l t i n order t h a t p a r a l l e l development e f f o r t s could be carried out. One u n i t went t o the contractor in St. Louis f o r f i t checks on t h e backcp docking adapter and then t o Johnson Space Center f o r crew t r a i n i n g . The second u n i t was undergoing dynamic t e s t i n g a t Milishall Space F l i g h t Center, where t h e t h i r d ( f l i g h t ) u n i t was a l s o undergoing acceptance t e s t i n g .