this post was submitted on 10 Oct 2024
58 points (83.7% liked)

Futurology

1757 readers
297 users here now

founded 1 year ago
MODERATORS
voidx@futurology.today
Lugh@futurology.today
Espiritdescali@futurology.today
AwesomeLowlander@futurology.today
58
Toyota's portable hydrogen cartridges look like giant AA batteries – and could spell the end of lengthy EV charging (www.techradar.com)
submitted 3 weeks ago by Espiritdescali@futurology.today to c/futurology@futurology.today
41 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] huginn@feddit.it 7 points 3 weeks ago (1 children)

You can get comparable isp with methalox engines without any of the weight required to keep the hydrogen inside the rocket, right?

[–] troyunrau@lemmy.ca 3 points 3 weeks 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...