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Ducted fan tail rotors have also been used in the Russian Kamov Ka-60 medium-lift helicopter, [17] and also on the Japanese military's Kawasaki OH-1 Ninja reconnaissance rotorcraft. French light helicopter manufacturer Hélicoptères Guimbal has also used a Fenestron for their Guimbal Cabri G2, a compact reciprocating engine-powered rotorcraft ...
In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .
In 1962, the United States Navy announced their request for two prototype aircraft with V/STOL capability, powered by four ducted fan nacelles. Bell Helicopters already had extensive experience with VTOL aircraft and was able to utilize an already developed test mockup. In 1964 the prototype, internally referred to by Bell as Model D2127, was ...
The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft.The X-49A is based on the airframe of a Sikorsky YSH-60F Seahawk, but utilizes Piasecki's proprietary vectored thrust ducted propeller (VTDP) design and includes the addition of lifting wings.
A distinctive feature of the MH-65 is its fenestron ducted-fan anti-torque device. The fenestron consists of 11 blades spinning inside a circular housing at the base of the helicopter's tail fin. The fenestron consists of 11 blades spinning inside a circular housing at the base of the helicopter's tail fin.
The tethers were designed to retract during lift-off to avoid being sucked into the exposed ducted fans at the top of the machine, but during a flight shortly after a rain shower in December 2002, the tether failed to retract and became tangled in the propeller blades, which disintegrated. Pilot and machine dropped to the ground.
Bell-Boeing V-22 Osprey, the only crewed tiltrotor in production to date. A tiltrotor is a type of vertical takeoff and landing (VTOL) aircraft that convert from vertical to horizontal flight by rotating propellers or ducted fans from horizontal positions like conventional aircraft propellers to vertical like a helicopter's rotors.
Hawker-Siddeley HS.138 (ducted fans) [2] Hawker-Siddeley HS.145; Hawker Siddeley P.1017 (cancelled supersonic vectored thrust) Hawker Siddeley P.1154 (cancelled supersonic vectored thrust) Hawker Siddeley P.1184-16 Dash 18; Hawker Siddeley P.1217; Heinkel Lerche (coleopter; not built) Hiller VZ-1 Pawnee (ducted fan) Hiller X-18