The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil

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Description

Summary: The effective change in the velocity of flow past a wing section, caused by the presence of wind-tunnel walls, is known for potential flow. This theory is extended by investigation of the two-dimensional compressible flow past a thin Rankine Oval. It is shown that for a symmetrical section at zero angle of attack the velocity increment due to the tunnel walls in the incompressible case must be multiplied by the factor 1/1-M^2 to take account of compressibility effects. The Mach number, M, corresponds to conditions in the wind-tunnel test section with the model removed (p. 1.).

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Nitzberg, Gerald E January 1, 1943.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and one other and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 75 times . More information about this report can be viewed below.

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Summary: The effective change in the velocity of flow past a wing section, caused by the presence of wind-tunnel walls, is known for potential flow. This theory is extended by investigation of the two-dimensional compressible flow past a thin Rankine Oval. It is shown that for a symmetrical section at zero angle of attack the velocity increment due to the tunnel walls in the incompressible case must be multiplied by the factor 1/1-M^2 to take account of compressibility effects. The Mach number, M, corresponds to conditions in the wind-tunnel test section with the model removed (p. 1.).

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  • : 93R23299
  • URL: http://hdl.handle.net/2060/19930093973 External Link
  • Report No.: NACA-ARR-3E28
  • Report No.: NACA-WR-A-41
  • Center for AeroSpace Information Number: 19930093973
  • Archival Resource Key: ark:/67531/metadc279468

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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, 1943

Added to The UNT Digital Library

  • March 30, 2014, 6 p.m.

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  • Feb. 6, 2017, 2:44 p.m.

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Nitzberg, Gerald E. The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil, report, January 1, 1943; (digital.library.unt.edu/ark:/67531/metadc279468/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.