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Aviation - MSN Encarta (2060 words) |
 | Aviation, term applied to the science and practice of flight in heavier-than-air craft, including airplanes, gliders, helicopters, ornithopters, convertiplanes, and VTOL (vertical takeoff and landing) and STOL (short takeoff and landing) craft (see Airplane; Glider; Helicopter). |
| General aviation embraces all other forms of flying such as instructional flying, crop dusting by air, flying for sport, private flying, and transportation in business-owned airplanes, usually known as executive aircraft. |
| Among his important contributions to the development of aviation were his invention of the airscrew, or propeller, and the parachute. |
| Aviation (296 words) |
| Aviation, the art and science of flying, has been a practical reality since the early 20th century. |
| Significant early research was initiated by Rupert TURNBULL, who built the first wind tunnel in Canada in 1902, and by the far-sighted Alexander Graham BELL, who founded the Aerial Experiment Association in 1907 and recruited John MCCURDY and F.W., as well as 2 Americans, Glenn Curtiss and Tom Selfridge. |
| Despite this setback, interest in aviation survived, and more experimental craft were built. |
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