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- Aircraft (13315 bytes)
15: ...iation [[VTOL]] is applied to aircraft other than helicopters that can take off or land vertically. [[ST...
18: ...rcraft use a relatively low density gas such as [[helium]], [[hydrogen]] or heated air, to displace the ...
57: ... where the body itself produces lift. So far the only significant practical application of the lifting...
59: ... or [[rotor]]s. The best-known examples are the [[helicopter]], the [[autogyro]] and the [[tiltrotor]] a...
73: ...nal combustion piston engine]] was virtually the only type of propulsion used for powered aircraft. (S... - Helicopter (20080 bytes)
1: ...an Bahyl]]. The first stable, fully-controllable helicopter placed in production was invented by [[Igor...
3: ...eli.robinsonr44.750pix.jpg|thumb|300px|[[Robinson Helicopter]] Company (USA) [[Robinson R44|R44]], a fou...
5: ...lling facilities and load/altitude limitations, a helicopter can travel to any location, and land anywhe...
9: ...] and civilian surveillance, carrying goods (some helicopters can carry slung loads, accommodating awkwa...
15: ...by [[Arthur M. Young|Arthur Young]] was the first helicopter to be licensed (in March [[1946]]) for use ...
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