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.
MARCH 7, 1986 SESSION (part 2 of
2)
[1195] [Ref. 3/7-68 3 of
4] Failure Scenario 3.
FAILURE SCENARIO 3
FAILURE MECHANISM
- DAMAGE TO THE O-RINGS INDUCED AT JOINT
MATING DUE TO OUT-OF-ROUND CONDITIONS
ASSESSMENT METHODS:
- REVIEW STACKING CONDITIONS FOR 51-L AND
OTHER FLIRTS
- INTERVIEW STACKING CREW
- PERFORM A DIMENSIONAL TOLERANCE STACK-UP
ANALYSIS
- CONDUCT TESTS TO SIMULATE 51-L RH SRM AFT
FIELD JOINT RATING CONDITIONS TO EVALUATE POTENTIAL FOR O-RING
DAMAGE
- CONDUCT TESTS TO SIMULATE LEAK TESTS AND
SEAL PERFORMANCE UNDER 51-L RH AFT FIELD JOINT MATING
CONDITIONS
- DESTACK STS 61-G TO ASSESS EFFECT OF
OUT-OF-ROUND ASSEMBLY
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