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World’s first megawatt-level airborne 'windmill' feeds power to grid
(interestingengineering.com)
this post was submitted on 14 Jan 2026
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I would imagine that you would segment the lifting bodies so that a leak or rupture in one or even a couple wouldn't bring the whole thing crashing down. Ships don't sink from a couple leaks here and there. You would also monitor buoyancy. The tether site needs to have some sort of reel in capability for servicing.
All of your concerns seem to be addressable through proper engineering considerations.