Image: HE2G13
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Description: Cornu helicopter. Paul Cornu in his first helicopter in 1907. Note that he is sitting between the two rotors, which rotated in opposite directions to cancel torque. This helicopter was the first flying machine to have risen from the ground using rotor blades instead of wings.
Title: HE2G13
Credit: The U.S. Centennial of Flight Commission
Author: UnknownUnknown © 2001 Smithsonian Institution, National Air and Space Museum, Videodisc. 2B 5847
Permission: PD-USGov
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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