Flettner aircraft which creates lift via the Magnus effect.
https://s3-us-west-1.amazonaws.com/h...r_aircraft.jpg
More:
https://en.wikipedia.org/wiki/Flettner_airplane
https://en.wikipedia.org/wiki/Magnus_effect
https://en.wikipedia.org/wiki/Flettner_rotor
Previously:
https://www.homemadetools.net/forum/...463#post142798
https://www.homemadetools.net/forum/...474#post139179
https://www.homemadetools.net/forum/...151#post138299
https://www.homemadetools.net/forum/...657#post136540
https://www.homemadetools.net/forum/...461#post122578
https://www.homemadetools.net/forum/...399#post122142
