4 ms·

Also absurdly flammable -- the Hindenburg was flying on hydrogen. I certainly wouldn't want to be in a hydrogen-filled airship floating above a forest fire! (H

• astazangasta 11y ago
  You don't need a gas. Just use fixed-frame volumes made of, say, graphene layers and fill it with vacuum. As long as your frame can hold the required force, no problem. There might even be metallic foams that do the trick.