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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 the early 1980s, the Israeli Navy sought to acquire a purpose-built maritime helicopter to bolster its over-the-horizon detection and targeting capabilities. Several helicopter types were evaluated, including the Westland Lynx and SH-60 Seahawk; in 1983, Israel announced the selection of the HH-65 Dolphin. Seeking a few examples to gain ...
The EC130 is a single-engine helicopter. It uses a three-bladed Starflex main rotor which is matched to an enclosed tail fan anti-torque device, known as a Fenestron, the latter feature replacing the traditional tail rotor found on the older AS350. The Fenestron has unevenly spaced blades to reduce noise generation by 50% compared to a ...
The A.104 was a slightly enlarged version of the A.103, and added a second seat beside the pilot's seat. The cockpit was enclosed by a perspex bubble with the engine at the rear and the tail rotor carried on an enclosed boom. Two piston-engined prototypes were built, followed by a single example of a turbine-engined variant designated A.104BT ...
The tail rotor is a smaller rotor mounted so that it rotates vertically or near-vertically at the end of the tail of a traditional single-rotor helicopter. The tail rotor's position and distance from the center of gravity allow it to develop thrust in a direction opposite that of the main rotor's rotation, thereby countering the torque effect ...
The Sikorsky CH-53E Super Stallion is a heavy lift helicopter operated by the United States military.As the Sikorsky S-80, it was developed from the CH-53 Sea Stallion, mainly by adding a third engine, adding a seventh blade to the main rotor, and canting the tail rotor 20°.
The CH-47 is powered by two turboshaft engines, mounted on each side of the helicopter's rear pylon and connected to the rotors by drive shafts. Initial models were fitted with Lycoming T55 engines rated at 2,200 hp (1,600 kW) each. The counter-rotating rotors eliminate the need for an antitorque vertical rotor, allowing all power to be used ...
The RotorWay Scorpion design was updated with an aluminum tail and full fiberglass cockpit enclosure to become the Exec. [1] The Exec 90 was developed in the early 1990s, it was, at the time, the only piston-powered helicopter to utilize an asymmetrical airfoil for improved autorotation characteristics and safety.