Tiltrotors

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Tiltrotors

A tiltrotor aircraft combines the vertical lift capability of a helicopter with the speed and range of a turboprop airplane.
Their two engines, which tilt on the wings, move the "proprotors" in a counterotating way to counteract the torque of the body.


1945 Platt and LePage proposed and patented the first tilrotor aircraft


1950s - 1960s Many convertiplanes were built, including the Vertol 76 (1957), Hiller X-18 (1959), LTV XC-142 (1964), Curtiss-Wright X-19 (1963), Canadiar CL-84 Dynavert (1965, picture) and the Nord 500 (1967). They use a whole tilt wing instead of a tilting engine design


1954 Transcendental Model 1G


August 23, 1955 Bell 200 [XH-33] XV-3 Starting built in 1953, this experimental aircraft featuring tilting wingtip rotor assemblies flew until 1966. The airframe returns to Texas in 2004


1969 Bell 300 Development Mock-up


May 3, 1977 Bell 301 XV-15 Started in 1972 under funding from NASA and the US Army. After three decades is continuing to be used as experimental testbeds.


1987 Bell/Boeing Pointer An RPV tiltrotor, for research and development weighing 250kg: less than one per cent of the future V-22 Osprey

March 19, 1989 Bell/Boeing V-22 Osprey First tiltrotor to enter in production


March 6, 1998 Bell 918 Eagle Eye An unmanned aerial vehicle (UAV) for military use


1999 Bell Boeing Quad TiltRotor (QTR) A proposed four-rotor derivative of the V-22 with a cargo capacity equivalent to a C-130 Hercules


March 6, 2003 Bell/Agusta BA609 Civilian six to nine passenger

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Tiltrotors

Transcendental Model 1G

Bell 200 [XH-33] XV-3

Bell 300

Bell 301 XV-15

Bell/Boeing Pointer

Bell/Boeing V-22 Osprey

Bell 918 Eagle Eye

Bell Boeing Quad TiltRotor (QTR)

Bell/Agusta BA609