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airplane




airplane
A heavier-than-air machine that is kept aloft by the forces on its wings (see forces of flight). An airplane is thrust forward by a propeller or other means of propulsion, such as a jet or rocket.

Common types of airplanes are airliners, large planes usually used to transport passengers; military planes; and general-aviation aircraft, which cover all airplanes that are not airliners or military aircraft. They generally are smaller than airliners and can transport people or cargo or perform a wide variety of specialized functions such as crop-dusting, flight training, and recreational flying.


Related categories

   • AERODYNAMICS AND AERONAUTICS
   • TECHNOLOGY

U.S. Centennial of Flight Commission