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Questions about the element hydrogen, typically related to its use as rocket fuel.

4 votes
2 answers
374 views

Are cryo tanks heavier than normal tanks (on a per surface area basis)?

From my related question, it turns out cryo tanks are not double-walled for insulation purposes. So now I will continue along a similar line and ask, aren't cryo tanks heavier than normal tanks on a p …
DrZ214's user avatar
  • 4,606
10 votes
3 answers
1k views

A cryo tank within another cryo tank...is it a sound engineering concept?

Here's the idea: A large spherical LH2 tank is placed inside a spherical LOX tank. The reason I thought of this is so the inner tank doesn't need to be insulated. It doesn't need to be a double-walle …
DrZ214's user avatar
  • 4,606