单词 | windage |
释义 | windagen. 1. An allowance of space (for expansion of gas in firing) between the inner wall of a firearm and the shot or shell with which it is charged: measured by the difference of the diameters of the bore and the shot. ΘΚΠ society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > bore > windage vent1647 windage1710 1710 J. Harris Lexicon Technicum II 1778 Philos. Trans. (Royal Soc.) 68 84 It would also be an improvement to diminish the windage; for by so doing, one third or more of the quantity of powder might be saved. 1860 W. Thomson Outl. Laws of Thought (ed. 5) §117. 238 The windage of a loose ball in the barrel of the piece. 2. Allowance made (esp. in shooting) for deflection from the direct course by the wind; such deflection itself. ΘΚΠ the world > movement > motion in a certain direction > change of direction of movement > [noun] > (a) deviation from straight course > deviation caused by the wind windage1867 the world > movement > motion in a certain direction > change of direction of movement > [noun] > (a) deviation from straight course > deviation caused by the wind > allowance for windage1867 society > armed hostility > military equipment > operation and use of weapons > action of propelling missile > discharge of firearms > [noun] > allowance for deflection by the wind windage1867 1867 Morning Star 30 July 6 At half-past nine the firing commenced..but with a breeze almost too strong for accurate aiming, and considerable ‘windage’ was required. 1891 A. Conan Doyle White Company iv ‘Seven yards windage, Hal,’ said one. 3. = wind n.1 13. ΘΚΠ the world > matter > gas > air > moving air > [noun] > a movement of air > a current of air > rush of air caused by moving body wind1553 waft1650 waff1836 windage1889 1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 11/1 To support the idea of injuries from the ‘windage’ of balls. 4. The (actual or potential) air resistance of a moving object, esp. a vessel or a rotating machine part; also, the force of the wind on a stationary object. ΘΚΠ the world > matter > gas > air > [noun] > air-pressure > air-resistance air resistance1827 windage1897 the world > matter > gas > air > [adjective] > under pressure > relating to air-resistance windage1948 1897 A. C. Pemberton Compl. Cyclist 78 This will..save a good deal of windage. 1898 Westm. Gaz. 26 May 4/1 [Yachts in which] an innovation is made..giving a maximum of head room with a minimum of windage. 1903 Nature 29 Oct. 635/1 The power wasted by the windage of fly-wheel and dynamo armatures. 1909 A. Williams Engin. Wonders of World III. 42/2 The designer has to consider how to curve the [propeller] blades so as to give a maximum thrust for a minimum windage. 1948 Times 24 Nov. 2/2 A new type of anchor designed to prevent warships, particularly aircraft-carriers with their large windage area, from dragging their anchors. 1953 ‘C. S. Forester’ Hornblower & Atropos 60 Their twelve oars hardly sufficed to control their more than forty feet of length, and the windage of the huge cabin aft was enormous. 1958 Engineering 31 Jan. 157/3 The radar aerial..is of parabolic section and slatted to reduce windage. 1961 E. Lightfoot Moment Distribution v. 123 Design against windage is important in skyscraper buildings. 1971 Sci. Amer. Dec. 7/1 If the time cycle between storage and retrieval is long, most of the stored energy [of the flywheel] is lost in windage and friction. 1977 Mod. Boating (Austral.) Jan. 98/1 There is a tremendous amount of windage in that topsides and cabin. 5. The action or process of winding, or raising and lowering by winches, etc. ΚΠ 1911 Chambers's Jrnl. Apr. 219/1 Some of the managers have attempted to accelerate the haulage and windage. Compounds windage loss n. loss of power through the air resistance of rotating parts. ΘΚΠ society > occupation and work > equipment > machine > [noun] > loss of power through air resistance windage loss1922 the world > matter > gas > air > [noun] > air-pressure > air-resistance > loss of power due to windage loss1922 1922 Encycl. Brit. XXX. 35/2 In determining the useful H.P. of rotary engines, ‘windage loss’..had first to be determined. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) IV. 449/1 Windage loss is relatively large in air-cooled high-speed machines. This entry has not yet been fully updated (first published 1926; most recently modified version published online December 2021). < n.1710 |
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