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 1 day 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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[–] Mandarbmax@lemmy.world 19 points 10 hours ago

Typically wind is dissipated by friction losses with the surface I think (bleeding off speed and energy by making waves, waving trees, and just rubbing against the ground) and wind is generated by heat from the sun (warm air expanding pushing against cold air, creating pressure differentials across thousands of miles).

Because wind is quick to regenerate and this does nothing to stop that the result is probably a pretty small drop in average wind speeds around the new mill and no greater ramifications than slightly less pollen travel in the spring.