Flettner Airplane
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Flettner Airplane
The Plymouth A-A-2004 rotor aircraft

A flettner airplane is a type of rotor airplane which uses a Flettner rotor to provide lift. The rotor comprises a spinning cylinder with circular end plates and, in an aircraft, spins about a spanwise horizontal axis. When the aircraft moves forward the Magnus effect creates lift.[1]

Anton Flettner, after whom the rotor is named, used it successfully as the sails of a ship. He also suggested its use as a wing for a rotor airplane.

The Butler Ames Aerocycle was built in 1910 and tested on board a warship. There is no record of it having flown.[1][2]

The Plymouth A-A-2004 was built for Zaparka in 1930 by three anonymous American inventors, and was reported to have made successful flights over Long Island Sound.[1][2]

An inherent safety concern is that if power to the rotating drums was lost--even if thrust was maintained--the aircraft would lose its ability to generate lift as the drum slowed down and it would not be able to sustain flight.[3]

See also

References

  1. ^ a b c Corporation, Bonnier (November 1930). "Whirling Spools Lift This Plane". Popular Science Monthly: 26.
  2. ^ a b Seifert, Jost (2012), "A review of the Magnus effect in aeronautics", Progress in Aerospace Sciences, 55: 17-45, Bibcode:2012PrAeS..55...17S, doi:10.1016/j.paerosci.2012.07.001
  3. ^ Ray, Keith (2015). The Strangest Aircraft of All Time. Stroud, Gloucestershire GL5 2QG: The History Press. p. 48. ISBN 9780750960977.CS1 maint: location (link)



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