Composite tanks with a 200 psi burst pressure can be fabricated with SSTO mas fractions fairly easily.
Matter of interest, what kind of weight/volume ratios are currently available at this kind of pressure?
-- -Ian
Motto: "You're Not Authorized to Know Our Motto." "War is never right, unless of course there is a second UN resolution" - Private Eye "War, huh? What is it good for?" - Frankie goes to Hollywood "Getting reelected" - G. Bush
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