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jermaustin1
on Oct 11, 2021
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Solar-powered aircraft flown for nearly three week...
A water/gravity battery comes to mind. Definitely not the answer you are looking for, but an answer none the less.
enchiridion
on Oct 11, 2021
[β]
Depends on your definitions. Is the water pumped considered part of the battery before itβs elevated?
jermaustin1
on Oct 11, 2021
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parent
[β]
The pumping of the water would be "charging" the barrel of water, I guess.
einpoklum
on Oct 11, 2021
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[β]
I'm sure this will work great for powering an aircraft, too. You could just let it all hang from an anchor at the highest point in the battery :-P
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