Thursday, August 11, 2005

word for the day thursday aug. 11th

aerodyne \AIR-uh-dine\ noun : a heavier-than-air aircraft (as an airplane, helicopter, or glider)

"I regret the introduction of a new term in the nomenclature of aerodynamics, but ... 'flying-machine' is too general and too suggestive of a wing-flapping machine; ... moreover, 'aeroplane' is used to denote a soaring machine ...which is not power-driven." Thus a Canadian engineer named W.R. Turnbull, writing around 1906, acquainted readers of the _Physical Review_ with "aerodyne" (a back-formation from "aerodynamic"). But the term never had adequate propulsion and it foundered. It received a temporary lift in the 1950s when aeronautics pioneer Alexander Lippisch insisted he preferred "aerodyne" for his experimental wingless aircraft, which was "not an airplane but a new concept of flight." Today, "aerodyne" serves best in contrast to "aerostat," the term for lighter-than-air aircraft such as balloons and blimps.

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