this post was submitted on 25 Sep 2025
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'Windmill': China tests world’s first megawatt-level airship to capture high winds (interestingengineering.com)
submitted 23 hours ago by kalkulat@lemmy.world to c/technology@lemmy.world
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"High-altitude winds between 1,640 and 3,281 feet (500 and 10,000 meters) above the ground are stronger and steadier than surface winds. These winds are abundant, widely available, and carbon-free.

"The physics of wind power makes this resource extremely valuable. “When wind speed doubles, the energy it carries increases eightfold, triple the speed, and you have 27 times the energy,” explained Gong Zeqi "

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[–] nlgranger@lemmy.world 4 points 6 hours ago

Hydrogen is hard to contains long term, it leaks through most materials. I'm no expert on the matter but I suspect the gains in lift would be partly negated by the changes to the envelope of the container.