this post was submitted on 09 Sep 2023
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It also had 5 pressure vessels’ worth of liquid H2 for the fuel cells in the payload bay, sometimes more depending on the flight (and never had any issues wrt that, though of course it did present its own challenges). Challenger’s “failure mode” was in the SRB. The ET happened to be right next to it. We can talk about the ET and its direct impact on Columbia because the foam shedding was a problem with the ET. And of course, the issues with the NASA culture that were present for both.
I’m not going to wade into the semantics of explosive vs flammable argument further down because at the end of the day it’s semantics.
And I am an expert since you seem very intent on only experts partaking in this discussion.