On Thu, Jul 9, 2015 at 10:58 PM, Clinton N. Fell <[email protected]> wrote: > They would lift much better than either hydrogen or helium
Not that much better. Helium gives only 14% less lift than vacuum, and hydrogen 7% less. https://en.wikipedia.org/wiki/Vacuum_airship If you have a material good enough for this, use a lot less of it with gas. > and not need to be refilled. Everything leaks. They will need to be pumped out regularly, and you'll need to admit air for buoyancy control, in the way normal airships have to release gas. John _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
