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

“is it a sound engineering concept?” Either way, it’s a bad business concept. Fuel tanks, and their vehicles, operate in the real world. Real machinists turning real stock into real stages, that need ...
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-2 votes

Why is hydrolox used for first stages?

Because the Shuttle set a precedent, and we have spent a generation unwinding that precedent. Or, are still spending time unwinding, because of institutional/fiscal inertia. The point of the Shuttle ...
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7 votes

Why is hydrolox used for first stages?

The problem with your analysis is that impulse per unit of volume isn't the right metric. Impulse is measured in units of force times time. Acceleration is measured in units of force divided by mass, ...
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