alt Hacker NewsAn article written by a "Polish-American web developer, entrepreneur, speaker, and social critic" says it's not safe to fly. And? What do the astronauts flying on board with significantly more information say?
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glenstein • yesterday at 9:44 PM
Did you read it? They're prolific here and the essence of the post is a bunch of citations and quotes from Nasa's own staff and literature.
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There is also an old article written by a professional bongo player about the Challenger explossion. He has other hobbies, but he was not a Rocket Scientist https://www.nasa.gov/history/rogersrep/v2appf.htm
The takeaway, is that the software was fine, but other systems like the main engine used too much cutting edge technology and have a lot of unexpected failure modes and too many problems like partialy broken parts that should no get partialy broken. [For a weird coincidence, Artemis II uses the same engines.] He concluded that when you consider all the possible problems the failure rate was closer to 1/100, but management was underestimating them and the official value that was 1/100000. [Anyway, the engines didn't fail in Columbia, it was one of the other possible problems.]
The articles explain that the shield has problems but management is underestimating them again. Let's hope the mission goes fine, but in case of a explosion it would be like a deja vu.