planformn.

Brit.

/ˈplanfɔːm/, U.S.

/ˈplænˌfɔrm/

Origin: Formed within English, by compounding. Etymons: plan n., form n.

Etymology: < plan n. (see branch II. at that entry) + form n.

1. Aeronautics. The shape or outline of an aircraft wing, helicopter blade, etc., as projected upon a horizontal plane.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [noun] > plane or aerofoil > wing > shape in plan

planform1908

1908 F. W. Lanchester Aerodonetics x. 319 When the author's standard combination of parabolic grading and elliptical plan form is used, it is a property of the resulting aerofoil that [etc.].

1913 Aeronaut. Jrnl. 17 83 In advocating this plan-form he does not appear to have had stability in his mind at all.

1952 Times 27 Aug. 4/2 The delta planform..gives ample stowage capacity for the undercarriage, engines, fuel tanks, armament and radar.

1997 Flight Internat. 18 June (Awards Suppl.) 17/2 A new main blade with thin tips and parabolic swept planform design helps to reduce noise from the main rotor system.

2. The outline of a vessel, building, landform, etc., as projected upon a horizontal plane or viewed from directly above.

ΘΚΠ

society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > a plan or diagram > plan drawing

platform?1544

groundwork1574

ground-plota1586

projecture1610

profile1665

protraction1669

inspection1694

pantarch1694

plan view1847

stereogram1868

planform1937

1937 Man 37 186/1 The effect of this arrangement is to make the gunwale lines of the ‘chinedkulan’ [sc. a type of canoe] assume a rather more cigar-shaped plan-form than is the case with the ‘tatara’.

1958 Engineering 21 Mar. 363/1 The main building has an interesting planform of a question mark.

1966 Science 18 Mar. 1379/1 That the drumlin has been shaped by something flowing past it is apparent..from the fact that the planform shows a shape that can be described by an equation for a streamlined body.

1967 Jane's Surface Skimmer Syst. 1967–8 2/1 The Aeromar A-1 is a gas turbine powered craft with a circular planform.

1999 Jrnl. Ecol. 87 1052/2 These patterns are integrally related to properties of river planform (the geometry of the channel thread as seen from the air).

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	planform
释义	planformn. Brit. /ˈplanfɔːm/, U.S. /ˈplænˌfɔrm/ Origin: Formed within English, by compounding. Etymons: plan n., form n. Etymology: < plan n. (see branch II. at that entry) + form n. 1. Aeronautics. The shape or outline of an aircraft wing, helicopter blade, etc., as projected upon a horizontal plane. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [noun] > plane or aerofoil > wing > shape in plan planform1908 1908 F. W. Lanchester Aerodonetics x. 319 When the author's standard combination of parabolic grading and elliptical plan form is used, it is a property of the resulting aerofoil that [etc.]. 1913 Aeronaut. Jrnl. 17 83 In advocating this plan-form he does not appear to have had stability in his mind at all. 1952 Times 27 Aug. 4/2 The delta planform..gives ample stowage capacity for the undercarriage, engines, fuel tanks, armament and radar. 1997 Flight Internat. 18 June (Awards Suppl.) 17/2 A new main blade with thin tips and parabolic swept planform design helps to reduce noise from the main rotor system. 2. The outline of a vessel, building, landform, etc., as projected upon a horizontal plane or viewed from directly above. ΘΚΠ society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > a plan or diagram > plan drawing platform?1544 groundwork1574 ground-plota1586 projecture1610 profile1665 protraction1669 inspection1694 pantarch1694 plan view1847 stereogram1868 planform1937 1937 Man 37 186/1 The effect of this arrangement is to make the gunwale lines of the ‘chinedkulan’ [sc. a type of canoe] assume a rather more cigar-shaped plan-form than is the case with the ‘tatara’. 1958 Engineering 21 Mar. 363/1 The main building has an interesting planform of a question mark. 1966 Science 18 Mar. 1379/1 That the drumlin has been shaped by something flowing past it is apparent..from the fact that the planform shows a shape that can be described by an equation for a streamlined body. 1967 Jane's Surface Skimmer Syst. 1967–8 2/1 The Aeromar A-1 is a gas turbine powered craft with a circular planform. 1999 Jrnl. Ecol. 87 1052/2 These patterns are integrally related to properties of river planform (the geometry of the channel thread as seen from the air). This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1908
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