Mr lee said: ↑ hi -new but enjoyed years, wit and wisdom Flettner rotor on a boat - ie. magnus effect Can the vertical rotor create lift? a curve balls 'laces' exaggerate and bend the magnus effect. can you replicate this effect on a rotor? --perhaps to enable another direction of force-- up optimally I would like to gain lift -to the vertical -reduce downforce I understand Kutta–Joukowski as it applies to a cylinder. horizontal rotor?--unknown omidirectional sailing efficiency ground effect used as a factor?