Wind-Tunnel Investigation of Air Inlet and Outlet Openings for Aircraft, Special Report

One of 111 reports in the series: NACA Special Reports available on this site.

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Description

An investigation was made in the NACA 5-foot vertical wind tunnel of a large variety of duct inlets and outlets to obtain information relative to their design for the cooling or the ventilation systems on aircraft. Most of the tests were of openings in a flat plate but, in order to determine the best locations and the effects of interference, a few tests were made of openings in an airfoil. The best inlet location for a system not including a blower was found to be at the forward stagnation point; for one including a blower, the best location was found ... continued below

Creation Information

Rogallo, Francis M. & Gauvain, William E. October 1, 1938.

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

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  • Main Title: Wind-Tunnel Investigation of Air Inlet and Outlet Openings for Aircraft, Special Report
  • Series Title: NACA Special Reports

Description

An investigation was made in the NACA 5-foot vertical wind tunnel of a large variety of duct inlets and outlets to obtain information relative to their design for the cooling or the ventilation systems on aircraft. Most of the tests were of openings in a flat plate but, in order to determine the best locations and the effects of interference, a few tests were made of openings in an airfoil. The best inlet location for a system not including a blower was found to be at the forward stagnation point; for one including a blower, the best location was found to be in the region of lowest total head, probably in the boundary layer near the trailing edge. Design recommendations are given, and it is shown that correct design demands a knowledge of the external flow and of the internal requirements in addition to that obtained from the results of the wind tunnel tests.

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  • URL: http://hdl.handle.net/2060/20090015095 External Link
  • Report No.: NACA-SR-95
  • Center for AeroSpace Information Number: 20090015095
  • Archival Resource Key: ark:/67531/metadc65109

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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

  • October 1, 1938

Added to The UNT Digital Library

  • Nov. 17, 2011, 5:13 p.m.

Description Last Updated

  • Nov. 30, 2016, 12:42 p.m.

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Rogallo, Francis M. & Gauvain, William E. Wind-Tunnel Investigation of Air Inlet and Outlet Openings for Aircraft, Special Report, report, October 1, 1938; (digital.library.unt.edu/ark:/67531/metadc65109/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.