this post was submitted on 10 Oct 2024
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Futurology

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[–] troyunrau@lemmy.ca 3 points 5 days ago

Hydrogen ISP is still king by a significant margin, but ISP isn't the whole story -- hydrogen comes with additional tank weight (due to lower density) and storage issues (pesky molecular size...). So that trade-off for ISP only really makes sense for an upper stage like Centaur. I'm not sure it makes sense for New Shepherd even...