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A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotary wings that spin around a vertical mast to generate lift. The assembly of several rotor blades mounted on a single mast is referred to as a rotor .
All three classes have been studied for use as lifting rotors and several variations have been flown on full-size aircraft, although only the vertical-axis rotary wing has become widespread on rotorcraft such as the helicopter. Some types provide lift at zero forward airspeed, allowing for vertical takeoff and landing (VTOL), as in the helicopter.
This is a list of rotorcraft, including helicopters, autogyros, rotor kites and convertiplanes. ... Little Wing LW-1; Little Wing Roto-Pup; Lockheed
This is a list of large aircraft, including three types: fixed wing, rotary wing, and airships.. The US Federal Aviation Administration defines a large aircraft as any aircraft with a certificated maximum takeoff weight (MTOW) of more than 12,500 lb (5,700 kg) [1]
Conventional rotary-wing aircraft use a set of complex mechanical gearboxes to convert the high rotation speed of gas turbines into the low speed required to drive main and tail rotors. Unlike powerplants, mechanical gearboxes cannot be duplicated (for redundancy) and have always been a major weak point in helicopter reliability.
Sikorsky S-72 modified as the X-Wing testbed, with experimental 4-blade main rotor. With a single main rotor helicopter, the creation of torque as the engine turns the rotor creates a torque effect that causes the body of the helicopter to turn in the opposite direction of the rotor. To eliminate this effect, some sort of antitorque control ...
Boeing Rotorcraft Systems (formerly Boeing Helicopters & Boeing-Vertol) [45] Brantly International [ 20 ] – all manufacturing is done in Qingdao , China [ 46 ] Campbell Aircraft Company (defunct) [ 10 ]
Hafner Rotabuggy (also known as "Malcolm Rotaplane" and "M.L. 10/42 Flying Jeep") - rotary wing glider attachment for landing jeeps. Tested in 1944 but introduction of vehicle-carrying gliders led to cancellation of project.