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I wonder if a modern materials would let us build lift cells in this vein - maybe thin-skinned vessels filled with aerogel for structural support.
by digikata 12y ago
I wonder if a modern materials would let us build lift cells in this vein - maybe thin-skinned vessels filled with aerogel for structural support.
- soperj 12y agoimmediate thought was aero gel too. I wonder if graphene would be useful as well.
- jcampbell1 12y ago> "This cannot even be achieved using diamond" The whole concept totally absurd. Helium is ~15% the density of air, so even if you created a material 100x stronger than diamond, it would only outperform helium by a tiny amount.
- titanomachy 12y agoThe helium in a balloon/dirigible is under pressure, so its density would be somewhat greater than 15% that of air. But point taken.
- coryrc 12y agoNo. It's always the same pressure as air. That's the point. It'll always be ~15%.