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Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

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Volume 4 Index

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

FEBRUARY 10, 1986 SESSION

 

[316] [Ref. 2/10-15]

 

QM-5 Options

 

• Putty options
  • Randolph putty, asbestos-filled. presently flight qualified
  • Inmont-Canada putty, asbestos-filled, tested on DM-7 aft field joint and nozzle-to-case joint
  • Inmont-St. Louis putty, asbestos-free, tested on DM-7 center field joint
• QM-5 approach and rationale
  • Randolph putty in igniter joints
    • Presently installed
    • Previous tests and flights verify acceptability
    • Other putty may be used later based on similarity to use in nozzle joint
• Inmont-Canada asbestos-filled putty in field and nozzle joints
  • Qualify alternate material as being equivalent or superior to Randolph putty while introducting least risk to firing
  • Field joint layup per DM-7 aft and center joint configuration based on known joint gaps
  • Nozzle joint layup same as current flight configuration

 

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