Magnus effect rotary sail propels cruise ship - GIF
Magnus effect rotary sail propels cruise ship.
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Previously:
https://www.homemadetools.net/forum/...700#post143656
https://www.homemadetools.net/forum/...372#post142465
https://www.homemadetools.net/forum/...893#post137387
https://www.homemadetools.net/forum/...620#post136373