A jet aircraft (or simply jet) is an aircraft (nearly always a fixed-wing aircraft) propelled by 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 www.- aircraft generally cruise most efficiently at about Mach. The earliest fixed wing airline in Jet Planes Fly In Stratosphere Network Europe was Aircraft Transport and Travel, formed by George Holt Thomas in ; via a series of takeovers and mergers, this company is an ancestor of modern-day British www.- a fleet of former military Airco DH.4A biplanes that had been modified to carry two passengers in the fuselage, it operated relief flights between Folkestone and Ghent. The Aérospatiale/BAC Concorde (/ ˈ k ɒ ŋ k ɔːr d /) is a British–French turbojet-powered supersonic passenger airliner that was operated from until It had a maximum speed over twice the speed of sound, at Mach (1, mph or 2, km/h at cruise altitude), with seating for 92 to passengers. First flown in , Concorde entered service in and operated for 27 years.
The earliest fixed wing airline in Europe was Aircraft Transport and Travel, formed by George Holt Thomas in ; via a series of takeovers and mergers, this company is an ancestor of modern-day British www.- a fleet of former military Airco DH.4A biplanes that had been modified to carry two passengers in the fuselage, it operated relief flights between Folkestone and Ghent. Fundamentals of Fluids Mechanics, 7th Edition. Pages. Fundamentals of Jet Planes Fly In Stratosphere Example Fluids Mechanics, 7th Edition. The polar vortex is located in the stratosphere, about 18 miles above Earth's surface, which is well above the jet stream, where planes fly, and where most weather occurs.

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