this post was submitted on 23 Nov 2024
1329 points (99.5% liked)
Political Memes
7796 readers
3469 users here now
Welcome to politcal memes!
These are our rules:
Be civil
Jokes are okay, but don’t intentionally harass or disturb any member of our community. Sexism, racism and bigotry are not allowed. Good faith argumentation only. No posts discouraging people to vote or shaming people for voting.
No misinformation
Don’t post any intentional misinformation. When asked by mods, provide sources for any claims you make.
Posts should be memes
Random pictures do not qualify as memes. Relevance to politics is required.
No bots, spam or self-promotion
Follow instance rules, ask for your bot to be allowed on this community.
No AI generated content.
Content posted must not be created by AI with the intent to mimic the style of existing images
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Regarding rocket propellant
Methane is more dense than hydrogen
Methane makes more thrust than hydrogen
Hydrogen rockets need to have huge fuel tanks, hydrogen rockets have low thrust - the space shuttle needed boosters to lift off
Everything in space is a trade off, kerosene is better in all those ways than methane, but you can make methane on Mars. The global warming potential isn't much as there are so few rocket launches, and hydrogen fuelled rockets use fossil hydrogen (made from fossil methane (aka natural gas)) because it is cheaper than alternatives
Saturn V stage 1 ran on kerosene (RP-1) and liquid oxygen
Stages 2 and 3 were hydrogen.
The rocket you want, to use space hydrogen, is the bussard ramjet, which unfortunately isn't expected to work