Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

 

Volume 5 Index

 

Hearings of the Presidential Commission on the Space Shuttle Challenger Accident: February 26, 1986 to May 2, 1986.

FEBRUARY 26, 1986 SESSION (part 1 of 2)

 

[901] [Ref. 2/26-4 2 of 14] SRB FRR 51-E (STS-22) Action Item Closure Paper (cont).

 

SRB FRR
51-E (STS-22)
Action Item Closure Paper
#SRM-3
SA42

 

Descriptions (Continued)

 

1. GRAPHIC COMPARISON OF STS-51C CASE JOINT O-RING EROSION DIMENSION WITH PREVIOUSLY OBSERVED ERODED O-RINGS.

2. PROVIDE DESCRIPTION AND DISPOSITION OF ALL PR'S ON CASE FIELD JOINTS FOR BOTH STS-51C AID 51-E. INCLUDE METAL PARTS PR'S, O-RINGS, PUTTY, LEAK TESTS, ETC.

3. CORRELATE PUTTY LOT WITH CASE JOINTS. IDENTIFY ANY PROBLEMS WITH PUTTY LAYUP.

4. DEVELOP A "MOST PROBABLE" SCENARIO OF HOW AND WHEN:

- HOT GAS PASSES PRIMARY O-RING

- PRODUCTS OF COMBUSTION AIM DEPOSITED BEHIND PRIMARY O-RING

- FLOW PAST O-RING STOPS

- ETC.

 

SUPPORT SCENARIO WITHIN ANALYSIS/TEST DATA

 

5. EFFECT OF LOW AMBIENT TEMPERATURE ON JOINT.

6. JOINT GEOMETRY AND O-RING SQUEEZE ON BOTH PRIMARY AND SECONDARY FOR STS-51C.

7. ANALYZE SOOT TO DETERMINE SOURCE.


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