Noun
an aircraft that is supported in flight by unpowered rotating horizontal wings (or blades); forward propulsion is provided by a conventional propeller
Source: WordNetFirst, the Dark Avenger’s investigation of the murderous Dr. Palermo leads him invade “The Death Tower” and discover the existence of a hooded secret society, in the early novel that introduced reporter Clyde Burke and The Shadow’s autogyro. Source: Internet
Once they’re away, it’s Clarisse once again who grabs the muzzle of a burning hot machine gun to allow the autogyro to fly out of range. Source: Internet
Rotorcraft An autogyro main Rotorcraft, or rotary-wing aircraft, use a spinning rotor with aerofoil section blades (a rotary wing) to provide lift. Source: Internet
In an autogyro, the rotors above aren’t powered. Source: Internet
;KaSkr-II Gyrocraft 1930: Re-engined KASKR-I with a Gnome-Rhone Titan engine. ; TsAGI A-7 1934: An autogyro primarily used for observation duties. Source: Internet
A similar design, called the autogyro boat, uses a wind turbine without the propellor, and functions in a manner similar to a normal sail. Source: Internet