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A quadcopter, also called quadrocopter, or quadrotor [1] is a type of helicopter or multicopter that has four rotors. [ 2 ] Although quadrotor helicopters and convertiplanes have long been flown experimentally, the configuration remained a curiosity until the arrival of the modern unmanned aerial vehicle or drone.
Top view of de Bothezat helicopter as depicted in US Pat. 1,749,471. Self-described as "the world's greatest scientist and outstanding mathematician", [2] and having written one of the first scientific papers on the aerodynamics of rotary-wing flight, [1] [N 1] George de Bothezat was a refugee from the Russian Empire who had fled to the United States in the wake of the Russian Revolution.
The Focke-Wulf Fw 61 was the first successful, practical, and fully controllable helicopter in 1936, while in 1942, the Sikorsky R-4 became the first helicopter to reach full-scale production. Starting in 1939 and through 1943, Igor Sikorsky worked on the development of the VS-300 , which over four iterations, became the basis for modern ...
The Curtiss-Wright VZ-7 (also known as the VZ-7AP [1]) was a VTOL quadrotor helicopter aircraft designed by the Curtiss-Wright company for the US Army. Like the Chrysler VZ-6 and the VZ-8 Airgeep it was to be a "flying jeep".
The Helicopters. "The Epic of Flight". Chicago: Time-Life Books, 1982. ISBN 0-8094-3350-8. The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. Lacaze, Henri (2016). Les avions Louis Breguet Paris [The Aircraft of Louis Breguet, Paris] (in French). Vol. 2: le règne du monoplan. Le Vigen, France.
The WGM.21 is an open cockpit quadrotor. Four rotors are mounted at the end of a four tubular supports arranged into a X shape. Cyclic and collective controls are mixed into a single control yoke.
The Gamera I is purpose-designed quadrotor helicopter to meet the criteria of the 1980 Sikorsky Prize. Two other teams have made prize attempts unsuccessfully, The Da Vinci III, built by a team at the California Polytechnic State University in 1989 and the Yuri I. [2] At the time the world record was of 19.46 seconds of flight at 0.2 m (7.9 in) altitude made by the Yuri I helicopter developed ...
Cassidy and Hensley both had an expert helicopter pilot take over for them in the actual helicopter flight sequences; this regular stunt pilot was Charles 'Chuck' Tamburro who wore a wig to give the appearance of a female pilot. Matthew Perry's first credited role was a small part in the show, where he played a child actor in a 1979 episode. [2]