On 5/25/2011 10:09 AM, Zan Lynx wrote:
In fact I doubt if gaseous hydrogen will penetrate a layer of liquid hydrogen, so keep the outer hull filled with the liquid and dedicate the equipment to keeping it chilled and under pressure.
Liquid hydrogen has many of the same storage problems as gaseous hydrogen, so you're not really gaining anything.
I believe that if the pressure hull is intact, the ship will reach a depth where it will float like a balloon because the outside pressure will become so much higher than the inside pressure.
It's an issue of density, not pressure; you float when the mass of the fluid you displace is equal or greater than the mass of your ship. And no plausible ship hull will survive the pressures required to get hydrogen to a really substantial density.
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