/sci/ - Science & Math

Make Airship (with rigid outer shell)

Fill With Helium (So it Has a relative weight of nothing)
then heat helium,and remove excess via a pretty simple one way valve (don't have to waste any helium)
should the airship not get lighter?

so if you can eventually remove all the gas from inside you have a ship much more buoyant than classic airships,

i know there a weight radio problem, but the larger they get the less of a problem this becomes

Why are airships filled with leaky and flammable hydrogen, or expensive helium, instead of simply vacuum in a rigid module?

Why we use rigid modules for spaceflight and inflatable (non-rigid) baloons for buoyant flight, when the exact opposite makes more sense?