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evidence of NASA (or at least MSFC) continuing not to get it



 
 
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Old August 28th 03, 10:00 PM
Chris Jones
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Default evidence of NASA (or at least MSFC) continuing not to get it

This is from page 78 of the CAIB report, the box titled "Board Testing":

NASA and the Board agreed that tests would be required and a test plan
developed to validate an impact/breach scenario. Initially, the Board
intended to act only in an oversight role in the development and
implementation of a test plan. However, ongoing and continually
unresolved debate on the size and velocity of the foam projectile,
largely due to the Marshall Space Flight Center's insistence that,
despite overwhelming evidence to the contrary, the foam could have
been no larger than 855 cubic inches, convinced the Board to take a
more active role. Additionally, in its assessment of potential foam
damage NASA continued to rely heavily on the Crater model, which was
used during the mission to determine that the foam-shedding event was
non-threatening. Crater is a semi-empirical model constructed from
Apollo-era data. Another factor that contributed to the Board's
decision to play an active role in the test program was the Orbiter
Vehicle Engineering Working Group's requirement that the test program
be used to validate the Crater model. NASA failed to focus on
physics-based pre-test predictions, the schedule priorities for RCC
tests that were determined by transport analysis, the addition of
appropriate test instrumentation, and the consideration of additional
factors such as launch loads. Ultimately, in discussions with the
Orbiter Vehicle Engineering Working Group and the NASA Accident
Investigation Team, the Board provided test plan requirements that
outlined the template for all testing. The Board directed that a
detailed written test plan, with Board-signature approval, be provided
before each test.

I'd be interested in hearing the other side of this, something besides
"we have the smartest people" and "everyone's out to get us". (I mean
that seriously -- if what is written above is true, then it's fuel for
the argument that NASA doesn't listen to outsiders and is convinced,
despite evidence, that they always know best.)

 




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