Jet propulsion - that form of propulsion produced when a relatively small mass of air is given a large amount of acceleration.
Jet Propulsion
As mentioned above, some form of propulsion is required to move an aircraft through the air and generate sufficient lift for it to fly. The earliest forms of propulsion were simple gasoline engines that turned propellers.
JET PROP
Describes aircraft using turbine engines to drive propellers.
JET STREAM
A migrating stream of high-speed winds present at high altitudes.
Jet propulsion had been demonstrated long before the war, by a German named Hans von Ohain in 1934, and by a British engineer named Frank Whittle in 1937.
 See also: Aviation, Speed, Navigation, Altitude, Aircraft
  
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