Properties of low-aspect-ratio pointed wings at speeds below and above the speed of sound

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"Low-aspect-ratio wings having pointed plan forms are treated on the assumption that the flow potentials in planes at right angles to the long axis of the airfoils are similar to the corresponding two-dimensional potentials. For the limiting case of small angles of attack and low aspect ratios the theory brings out the following significant properties: (1) The lift of a slender, pointed airfoil moving in the direction of its long axis depends on the increase in width of the sections in a downstream direction. Sections behind the section of maximum width develop no lift. (2) The spanwise loading of such … continued below

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[16] p. : ill.

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Jones, Robert T. May 11, 1945.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 177 times. More information about this report can be viewed below.

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  • Main Title: Properties of low-aspect-ratio pointed wings at speeds below and above the speed of sound
  • Series Title: NACA Technical Notes

Description

"Low-aspect-ratio wings having pointed plan forms are treated on the assumption that the flow potentials in planes at right angles to the long axis of the airfoils are similar to the corresponding two-dimensional potentials. For the limiting case of small angles of attack and low aspect ratios the theory brings out the following significant properties: (1) The lift of a slender, pointed airfoil moving in the direction of its long axis depends on the increase in width of the sections in a downstream direction. Sections behind the section of maximum width develop no lift. (2) The spanwise loading of such an airfoil is independent of the plan form and approaches the distribution giving a minimum induced drag. (3) The lift distribution of a pointed airfoil travelling point-foremost is relatively unaffected by the compressibility of the air below or above the speed of sound. A best of a triangular airfoil at a Mach number of 1.75 verified the theoretical values of lift and center of pressure" (p. 1).

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[16] p. : ill.

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  • Accession or Local Control No: 93R13890
  • URL: http://hdl.handle.net/2060/19930084600 External Link
  • Report No.: NACA-TN-1032
  • Center for AeroSpace Information Number: 19930084600
  • Archival Resource Key: ark:/67531/metadc56139

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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  • May 11, 1945

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

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  • March 13, 2019, 4:21 p.m.

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Jones, Robert T. Properties of low-aspect-ratio pointed wings at speeds below and above the speed of sound, report, May 11, 1945; (https://digital.library.unt.edu/ark:/67531/metadc56139/: accessed May 27, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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