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aerodynamics|ˌɛərəʊdɪˈnæmɪks, ˌɛərəʊdaɪˈnæmɪks|
[f. aero- + dynamics, i.e. the dynamics of aerial bodies. Cf. Fr. aérodynamique.]
The branch of Pneumatics which treats of air and other gases in motion, and of their mechanical effects. Hence ˌaerodyˈnamic a. [cf. G. aerodynamische (1835)], pertaining to aerodynamics [cf. dynamics1], esp. to the effects produced on aircraft or other solid bodies by the air through which they pass, or the effects produced in air by the motion of solid bodies through it.
In quot. 1891, the art of flying through the air by some mechanism, the use of flying-machines, aviation.
1837Pop. Encycl. I. 45 Aerodynamics; a branch of aerology, or the higher mechanics, which treats of the powers and motion of elastic fluids. 1868Chambers Encycl. I. 56 One of the most important inquiries in Aerodynamics is the resistance offered to a body moving in air, or—which is the same thing—the pressure exerted by air in motion upon a body at rest. 1891S. P. Langley (title) Experiments in Aerodynamics. 1908W. H. Story tr. Hildebrandt's Airships ix. 90 Aerodynamic airships. 1920Advis. Comm. Aeronautics, Rep. & Mem. No. 651, p. 5 Aerodynamic balance of the aileron. 1922Edin. Rev. Oct. 214 The improvements in range and aerodynamic and engine efficiency of aircraft. 1923Glazebrook Dict. Appl. Physics V. 199/2 The Main Aerodynamic Balance..This balance was designed so that it could be used to measure forces about three axes perpendicular to one another and the moment about a vertical axis. 1935Jrnl. R. Aeronaut. Soc. XXXIX. 826 With regard to the use of sponsons or stubs, he had understood Mr. Coombes to say that one could reckon on some aerodynamic lift from the stub. 1936Aircraft Engin. Sept. 241/2 The idealized case is that of a monoplane in which the aerodynamic centres of the wing and tail plane lie in one straight line. 1949Jrnl. R. Aeronaut. Soc. LIII. 659/2 It provided new incentives for understanding stability and control..aerodynamic heating..and similar general problems. 1950Gloss. Aeronaut. Terms (B.S.I.) i. 28 Aerodynamic balance, a balance designed for measuring aerodynamic forces or moments. 1950Sci. News XV. 83 Rockets are powerful research tools... Their value in aerodynamics lies in their ability to propel full-sized or model aircraft..at supersonic speeds in order that the unknown aerodynamic forces in play at these speeds can be measured. 1962Gloss. Aeronaut. Terms (B.S.I.) 1 Aerodynamic centre, the point about which the rate of change of pitching moment with incidence is zero. Ibid. 5 Aerodynamic balance, the degree to which the hinge moment of a control surface is reduced by balancing.
So ˌaerodyˈnamical a., -ally adv.; ˌaerodyˈnamicist, one skilled in aerodynamics.
1908Aeronaut. Jrnl. 84 The design and perfection of true aërodynamical flying ships of the future. 1921Glasgow Herald 8 Sept. 10/2 Department for aerodynamical research. 1928C. F. S. Gamble North Sea Air Station x. 147 The Wight seaplane..was of similar type to the Short, but its aerodynamical qualities were inferior to its prototype. Ibid. xiii. 210 Aerodynamically, it was of interest in being fitted with an air-brake in the form of adjustable flaps. 1939Jrnl. R. Aeronaut. Soc. XLIII. 138 It is their duty to co⁓ordinate the efforts of the draughtsmen,..designers and aerodynamicists. 1960[see next]. |