Word: air
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Dates: during 1920-1929
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Wind tunnel: An elongated chamber (usually a tube) through which a steady air stream may be drawn or forced...
...pride and anticipation, each confident his make would perform most dependably on the long flight to Texas, to California, Oregon and back through the Northwest. Manufacturer Edsel B. Ford, donor of the four-foot, silver and green marble trophy, acted as starter, watched his own new models take the air for the Texas Co. and the Standard Oil Co. of Indiana. Manufacturer Eddie Stinson, not content to enter his Stinson-Detroiter with another pilot, took the controls himself, sought to repeat his 1927 victory. These counted: skill, reliability, speed, endurance, plane performance. This was the serious business of aviation...
Airplane: A mechanically driven aircraft, heavier-than-air, fitted with fixed wings...
Airship: An aerostat (lighter-than-air craft) with a propelling system...
Ornithopter: Heavier than air craft, deriving support and propelling force from flapping wings...