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Original Patent filed May 28,1929 Transcendental Model 1-G hovering Bell X-22 A Bell XV-15 prepares to land. The first work in the direction of a tilt-rotor (French "Convertible") seems to have originated ca. 1902 by the French-Swiss brothers Henri and Armand Dufaux, for which they got a patent in February 1904, and made their work public in April 1905.
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.
Two 1 ⁄ 6 hp (0.12 kW) electric motors were used to tilt the rotors, with the rotors linked by a shaft running through the wing to ensure that both rotors would be tilted at the same angle. A steel tube forward fuselage carried the single pilot, engine and gearbox, with the open cockpit positioned forward of the engine and gearbox.
The focus was on tilt-rotor pods, integration of the tilting rotors with the wings and fuselage of the aircraft, and studying the airflow as the rotors tilted. Tilt rotors with fixed rotors and with folding rotors were investigated.
CV-22B Osprey with rotors in tilt CMV-22B on USS Nimitz. The preproduction model was called the V-22. USMC operates the MV-22B including the VIP V-22s, the USAF the CV-22B, and the Navy CMV-22B. V-22 ("V-22A") Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after the 1993 ...
The Bell X-22 is an American V/STOL X-plane with four tilting ducted fans.Takeoff was to selectively occur either with the propellers tilted vertically upwards, or on a short runway with the nacelles tilted forward at approximately 45°.
The Leonardo Next-Generation Civil Tiltrotor (NextGenCTR or NGCTR) is a tiltrotor aircraft demonstrator designed and developed by the Italian aerospace company Leonardo S.p.A. Studies for a two times larger tiltrotor than the AgustaWestland AW609 started in 2000.
A V-280 in flight with rotors tilted to hover configuration. The V-280 is designed for a cruising speed of 280 knots (320 mph; 520 km/h), hence the name V-280. It has a top speed of 300 knots (345 mph; 556 km/h), a range of 2,100 nautical miles (2,400 mi; 3,900 km), and an effective combat range of 500 to 800 nmi (580 to 920 mi; 930 to 1,480 km).