OneForFreedom Wrote:
Feb 13, 2013 5:58 PM
TommyMaq, why did the Challenger's o-rings become brittle when they were cold? Why weren't o-rings used that would not have this defect? You'll find that it's directly traceable to EPA requirements (I believe in the cases of the Challenger and Columbia, the EPA waived the requirements, but NASA wanted to "do the right thing.")