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Old 07-09-2021, 09:29 AM   #118 (permalink)
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Hackaday had a decent explanation on how it worked: the prop blades are crosswind to the airflow so they work like sails thus enabling faster than wind. Roncz did design an airfoil that worked thusly for the Americas cup.
casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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