Autogyro
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An autogyro, gyroplane or gyrocopter, is a class of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. A gyroplane "means a rotorcraft whose rotors are not engine-driven, ex
The AutoGyro Calidus, a modern, closed-cabin, pusher-propeller autogyro in flight
The rotor head, pre-rotator shaft, and Subaru engine configuration on a VPM M-16 autogyro
Russian Gyroplanes Gyros-2 Smartflier
Montgomerie Merlin single-seat autogyro
Gyrodyne
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A gyrodyne is a type of VTOL aircraft with a helicopter rotor-like system that needs to be driven by its engine only for takeoff and landing, and includes one or more conventional propeller or jet eng
A Fairey FB-1 Gyrodyne
The Fairey Rotodyne Y in 1959
Image of baseline GBA-DARPA Heliplane concept, showing its free-spinning rotor, which is fitted with integral tipjets, fed with bypass air from two Williams gas-turbine propulsion engines.
Pilatus Agusta A109 Flug