1930s autogyros had a power take off to spin the rotor up. But I was thinking of a reaction wheel that would be like a stepper motor that could spin up either way. Maybe pairs that can spin with or against each other. Commutator to pass the power in and out.
edit: almost forgot. I'd watched this earlier.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.tragectory: Line goes down and to the right.
Last edited by freebeard; 07-11-2021 at 03:25 AM..
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