| 单词 | form drag |
| 释义 | > as lemmasform drag form drag n. Aeronautics the drag on a moving body that depends directly on its shape and is due to the unequal pressure over its surface that results from the disturbance of the fluid. ΘΚΠ society > travel > air or space travel > specific movements or positions of aircraft > aerodynamic forces and concepts > [noun] > drag > types of parasite resistance1918 profile drag1922 induced drag1926 parasite drag1927 form drag1931 pressure drag1933 parasitic drag1937 wave drag1948 1931 T. G. Whitlock Appl. Aerodynam. iii. 38 Form drag..is not a frictional or rubbing force acting tangentially to the surface, like skin friction. 1937 Jrnl. Royal Aeronaut. Soc. 41 1120 Air resistance consists of the skin friction and of the drag due to the inertia of the medium (‘form drag’ according to modern terminology). 1951 D. O. Dommasch et al. Airplane Aerodynamics vi. 146 The various types of drag..are as follows: (1) form or pressure drag; (2) skin-friction drag; (3) induced drag; and (4) wave drag. 1970 A. C. Kermode Flight without Formulae (ed. 4) 63 That part of the drag which is due to the shape or ‘form’ of a body, and which can be reduced by streamlining, is called form drag. < as lemmas |
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