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study of gases in motion. As the principal application of aerodynamics is the design of aircraft, air is the gas with which the science is most concerned. Although aerodynamics is primarily concerned with flight, its principles are also used in designing automobile
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heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight through the dynamic action of the air.
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operation of heavier-than-air aircraft and related activities. Aviation can be conveniently divided into military aviation, air transport, and general aviation.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The science that deals with flight through the air.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The science of aerial locomotion and the production apparatus of flight, both piloted and unpiloted, or the study of travel through the earth's atmosphere. The science of aeronautics essentially studies design, construction, and operation of aircraft within the earth's atmosphere. For studies involving travel in space, there is a separate branch called astronautics.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
the study or practice of all aspects of flight through the air
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005