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I wonder if that was "We believe they are capable of 100 missions, because we require 100 missions" or "We believe they are capable of 100 missions, because tha
by Crito 12y ago
I wonder if that was "We believe they are capable of 100 missions, because we require 100 missions" or "We believe they are capable of 100 missions, because that is what our test data actually suggests".
See: Feynman's Appendix F. Specifically his criticism of the Shuttle reliability numbers quoted by NASA management and how they differed from the reliability numbers quoted by NASA engineers.
- nickff 12y agoDesign life and rated life (as built) are two completely different things. The Space Shuttle requirements stated that it should be capable of 100 missions, but I have never seen any document describing what they were rated for, after they were constructed, and the flight tests were completed.