---

Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

---

 

Volume 4 Index

Hearings of the Presidential Commission on the Space Shuttle Challenger Accident: February 6, 1986 to February 25, 1986

FEBRUARY 11, 1986 SESSION

 

[375] [Ref. 2/11-18] BLOW-BY PRIMARY O-RING CONTINUES PAST 200 PSI.

 

---

[Ref. 2/11-19] RATIONALE FOR ACCEPTING OBSERVED O-RING EROSION.

• JET IMPINGEMENT EROSION HAS BEEN SHOWN BY TEST AND ANALYSIS TO BE WITHIN ACCEPTABLE LIMITS.
  • ANALYSIS
    • GAS FLOW
    • HEAT TRANSFER
    • STRUCTURAL
  • TEST
    • FULL SCALE MOTORS
    • SUBSCALE MOTORS
    • TEST OF O-RINGS AT 3000 PSI (3 TIMES MAXIMUM OPERATING PRESSURE) WITH 2 TIMES OBSERVED EROSION.
• DETAILED POSTFLIGHT INSPECTION, ANALYSIS OF ANOMALIES, AND RIGOROUS REVIEW PROCESS ASSURES UNDERSTANDING OF OBSERVATIONS.

---

Back

---