Lockheed SR-71 Blackbird
A Lockheed SR-71 Blackbird shortly after refueling in flight.
aviation
transportation
Also known as: air transportation, civil aviation, flight
aviation, the development and operation of heavier-than-air aircraft. The term military aviation refers to the development and use of military aircraft, while the term civil aviation refers to all nonmilitary aviation, such as air transportation provided by airlines or the carrying of cargo by commercial aircraft. (Read Orville Wright’s 1929 biography of his brother, Wilbur.) A brief treatment of aviation follows. For full treatment of military aviation, see military aircraft. For civil aviation, see airplane;...