this post was submitted on 07 Jan 2025
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Solarpunk technology

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Technology for a Solar-Punk future.

Airships and hydroponic farms...

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[–] [email protected] 6 points 1 day ago* (last edited 1 day ago)

Hydrogen is a nuisance of a gas, though - it has a very wide combustible range of mixtures.

But an airship envelope containing multiple lifting units of hydrogen could be passivated by filling the envelope with a non-combustible gas like helium.

So, there's a big sausage providing structure and that's full of helium (or nitrogen, or CO2, or anything else which doesn't react with hydrogen in normal conditions)... and it contains balloons full of hydrogen. If one of them springs a leak, the leak won't be going into an environment that supports fire. And if the leak then proceeds into surrounding air, the hydrogen is hopefully diluted beyond its combustible range.

Considerably less expensive than using helium only. But considerably safer than using hydrogen among air.