Preliminary investigation of a translating cowl technique for improving take-off performance of a sharp-lip supersonic diffuser

One of 5,164 reports in the series: NACA Research Memorandums available on this site.

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Description

A preliminary investigation was conducted in quiescent air on a translating cowl technique for improving the take-off performance of a sharp-lip supersonic diffuser. The technique consists of cutting the cowling in a plane normal to its axis and then translating the forepart of the cowling in the forward direction. The leading edge of the fixed portion of the cowling is rounded. Appreciable improved inlet performance was obtained with a cowling translation corresponding to a gap of only 1/4 inlet radius.

Physical Description

11 p. : ill.

Creation Information

Cortright, Edgar M., Jr. November 28, 1951.

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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 326 times . More information about this report can be viewed below.

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  • Main Title: Preliminary investigation of a translating cowl technique for improving take-off performance of a sharp-lip supersonic diffuser
  • Series Title: NACA Research Memorandums

Description

A preliminary investigation was conducted in quiescent air on a translating cowl technique for improving the take-off performance of a sharp-lip supersonic diffuser. The technique consists of cutting the cowling in a plane normal to its axis and then translating the forepart of the cowling in the forward direction. The leading edge of the fixed portion of the cowling is rounded. Appreciable improved inlet performance was obtained with a cowling translation corresponding to a gap of only 1/4 inlet radius.

Physical Description

11 p. : ill.

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  • Accession or Local Control No: 93R16169
  • URL: http://hdl.handle.net/2060/19930086879 External Link
  • Report No.: NACA-RM-E51I24
  • Center for AeroSpace Information Number: 19930086879
  • Archival Resource Key: ark:/67531/metadc59040

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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

  • November 28, 1951

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

Description Last Updated

  • April 2, 2018, 1:55 p.m.

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Cortright, Edgar M., Jr. Preliminary investigation of a translating cowl technique for improving take-off performance of a sharp-lip supersonic diffuser, report, November 28, 1951; (digital.library.unt.edu/ark:/67531/metadc59040/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.