This link has been bookmarked by 37 people . It was first bookmarked on 21 Feb 2008, by markrainey.
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20 Feb 20
camfella62Personal observations on the reliability of the Shuttle, by R. P. Feynman We have also found that certification criteria used in Flight Readiness Reviews often develop a gradually decreasing strictness. via Pocket
Feynman's Appendix to the Rogers Commission Report on Space Shuttle Challenger Accident atoberead feynman science
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06 Jan 15
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certification criteria used in Flight Readiness Reviews often develop a gradually decreasing strictness
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same risk was flown before without failure
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reliability of solid rockets was made by the range safety officer
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studying the experience of all previous
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management of NASA exaggerates the reliability of its product, to the point of fantasy
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phenomenon of accepting for flight, seals that had shown erosion
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erosion and blow-by are not what the design expected
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fact that this danger did not lead to a catastrophe before is no guarantee that it will not the next time
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They did not occur equally on all flights and all joints; sometimes more, and sometimes less
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often depending on the "success" of previous flights
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O-rings of the Solid Rocket Boosters were not designed to erode
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Erosion was not something from which safety can be inferred
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mathematical model was made to calculate erosion
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not on physical understanding but on empirical curve fitting.
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formula was known to be uncertain
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did not go directly through the very data points by which it was determined
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08 Jan 13
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10 Feb 12
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16 Nov 09
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01 Nov 09
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31 Jul 08
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20 May 08
jeanjordaanPersonal observations on the reliability of the Shuttle, by R. P. Feynman
feynman engineering science nasa space programming physics article design
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11 Mar 08
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24 Feb 08
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23 Feb 08
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21 Feb 08
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Sheryl A. McCoyPersonal observations on the reliability of the Shuttle, by R. P. Feynman
feynman engineering science nasa physics Space programming management communication safety design Challenger shuttle analysis
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20 Feb 08
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ken .Probably bookmarked already elsewhere, but it's great reading for management of risk, overconfidence, engineering (paper designs and real world problems), value of diversity (complex problems) and open communication
communication design failure history learning management nasa organisation politics quality risk safety space
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