Linearized compressible-flow theory for sonic flight speeds

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The partial differential equation for the perturbation velocity potential is examined for free-stream Mach numbers close to and equal to one. It is found that, under the assumptions of linearized theory, solutions can be found consistent with the theory for lifting-surface problems both in stationary three-dimensional flow and in unsteady two-dimensional flow. Several examples are solved including a three dimensional swept-back wing and two dimensional harmonically-oscillating wing, both for a free stream Mach number equal to one. Momentum relations for the evaluation of wave and vortex drag are also discussed. (author).

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Heaslet, Max A; Lomax, Harvard & Spreiter, John R January 1, 1950.

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  • Main Title: Linearized compressible-flow theory for sonic flight speeds
  • Series Title: NACA Technical Reports

Description

The partial differential equation for the perturbation velocity potential is examined for free-stream Mach numbers close to and equal to one. It is found that, under the assumptions of linearized theory, solutions can be found consistent with the theory for lifting-surface problems both in stationary three-dimensional flow and in unsteady two-dimensional flow. Several examples are solved including a three dimensional swept-back wing and two dimensional harmonically-oscillating wing, both for a free stream Mach number equal to one. Momentum relations for the evaluation of wave and vortex drag are also discussed. (author).

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  • Accession or Local Control No: 93R20224
  • URL: http://hdl.handle.net/2060/19930090934 External Link
  • Report No.: NACA-TR-956
  • Center for AeroSpace Information Number: 19930090934
  • Archival Resource Key: ark:/67531/metadc65455

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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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Creation Date

  • January 1, 1950

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

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  • April 10, 2018, 3:45 p.m.

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Heaslet, Max A; Lomax, Harvard & Spreiter, John R. Linearized compressible-flow theory for sonic flight speeds, report, January 1, 1950; (digital.library.unt.edu/ark:/67531/metadc65455/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.