25.8 MB (5.0 MB compressed)
3911 x 2309 pixels
33.0 x 19.6 cm ⏐ 13.0 x 7.7 in (300dpi)
CCI ARCHIVES / SCIENCE PHOTO LIBRARY CCI ARCHIVES / SCIENCE PHOTO LIBRARY
Early 20th Century autogyro. Historical image of an autogyro aircraft in front of the Grand Palais, Paris, France. An autogyro also known as a gyrocopter, gyroplane or rotaplane, is a type of rotorcraft that uses an un-powered rotor in autorotation to develop lift, and an engine-powered propeller, similar to that of a fixed-wing aircraft, to provide thrust. Image from 'Wonders of Peace and War', by Geza Supka, Hungary, 1939.
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