> would move no air no matter how much power you dumped into it Fun pedantic cor... | Hacker News

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		zackbloom on Feb 4, 2022 \| parent \| context \| favorite \| on: DaVinci-style drone with 600-year-old screw rotor ... > would move no air no matter how much power you dumped into it Fun pedantic correction, it would move air via the Magnus effect [1], but of course it would be orthogonal to the direction you want it to be moved! See the Turbosail [2] for a fun application of that effect. [1] - https://en.wikipedia.org/wiki/Magnus_effect [2] - https://en.wikipedia.org/wiki/Turbosail

blackoil on Feb 5, 2022 [–]

if we mount them horizontally?

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