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Jet aircraft
"Jet plane" redirects here. For the Rumania Montevideo album, see Jet Plane.
Aircraft class powered by jet propulsion engines
A jet aircraft (or simply jet) is an aircraft (nearly always a fixed-wing aircraft) propelled by one or more jet engines.
Whereas the engines in propeller-powered aircraft generally achieve their maximum efficiency at much lower speeds and altitudes, jet engines achieve maximum efficiency at speeds close to or even well above the speed of sound.
Wikipedia for kids of jet planes
Jet aircraft generally cruise most efficiently at about Mach (&#;km/h (&#;mph)) and at altitudes around 10,–15,&#;m (33,–49,&#;ft) or more.
The idea of the jet engine was not new, but the technical problems involved did not begin to be solved until the s.
Frank Whittle, an English inventor and RAF officer, began development of a viable jet engine in ,[1] and Hans von Ohain in Germany began work independently in the early s. In August the turbojet powered Heinkel He , the world's f