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AAH sought an attack helicopter based on combat experience in Vietnam, with a lower top speed of 145 kn (167 mph; 269 km/h) and twin engines for improved survivability. Lockheed offered the CL-1700, a modified version of the Cheyenne with two engines and omitted the pusher propeller, without success. [44]
This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Military transport tiltrotor "V-22" redirects here. For other uses, see V22 (disambiguation). V-22 Osprey A MV-22 being used during a MAGTF demonstration during the 2014 Miramar Air Show General information Type Tiltrotor military transport aircraft National origin United States ...
Tandem-rotor helicopters, however, use counter-rotating rotors, with each cancelling out the other's torque. Therefore, all of the power from the engines can be used for lift, whereas a single-rotor helicopter uses some of the engine power to counter the torque. [1] An alternative is to mount two rotors in a coaxial configuration.
Two aircraft were built to prove the tiltrotor design and explore the operational flight envelope for military and civil applications. [ 8 ] [ 9 ] In 1981, using experience gained from the XV-3 and XV-15, Bell and Boeing Helicopters began developing the V-22 Osprey , a twin-turboshaft military tiltrotor aircraft for the U.S. Air Force and the U ...
The Boeing CH-47 Chinook is a tandem-rotor helicopter originally developed by American rotorcraft company Vertol and now manufactured by Boeing Defense, Space & Security.The Chinook is a heavy-lift helicopter that is among the heaviest lifting Western helicopters.
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 regional jet carrying 60 passengers and four crew members collided with a military helicopter on Wednesday night as it approached Washington Reagan National Airport. The flight was en route from ...
The CL-475 is a two-seat helicopter with a fabric-covered steel and aluminum structure. The glazed cockpit provides side-by-side seating for two occupants. The landing gear is designed in a tricycle configuration, with two large wheels mounted alongside the bottom of the fuselage, and a nosewheel mounted underneath the cockpit.