this post was submitted on 17 May 2025
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Lengthy video, but worth the watch, as Zack Golden's analyses usually are.
Wish there was a tl;dr
Resonance. Old problem, new rocket.
"Resonance"is probably the best one-word explanation, but the interesting details are in how the version 2 downcomer design makes the ship more prone to pogo oscillations, what the most likely failure modes are, and how they could be addressed in the short term and long term.