Comparison of Three Exit-Area Control Devices on an N.A.C.A. Cowling, Special Report

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

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Description

"Adjustable cowling flaps, an adjustable-length cowling skirt, and a bottom opening with adjustable flap were tested as means of controlling the rate of cooling-air flow through an air-cooled radial-engine cowling. The devices were tested in the NACA 20-foot tunnel on a model wing-nacelle-propeller combination, through an airspeed range of 20 to 80 miles per hour, and with the propeller blade angle set 23 degrees at 0.75 of the tip radius. The resistance of the engine to air flow through the cowling was simulated by a perforated plate" (p. 1).

Physical Description

[11] p. : ill.

Creation Information

McHugh, James G. May 1940.

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

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  • Main Title: Comparison of Three Exit-Area Control Devices on an N.A.C.A. Cowling, Special Report
  • Series Title: NACA Special Reports

Description

"Adjustable cowling flaps, an adjustable-length cowling skirt, and a bottom opening with adjustable flap were tested as means of controlling the rate of cooling-air flow through an air-cooled radial-engine cowling. The devices were tested in the NACA 20-foot tunnel on a model wing-nacelle-propeller combination, through an airspeed range of 20 to 80 miles per hour, and with the propeller blade angle set 23 degrees at 0.75 of the tip radius. The resistance of the engine to air flow through the cowling was simulated by a perforated plate" (p. 1).

Physical Description

[11] p. : ill.

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Identifier

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  • URL: http://hdl.handle.net/2060/20090015113 External Link
  • Report No.: NACA-SR-144
  • Center for AeroSpace Information Number: 20090015113
  • Archival Resource Key: ark:/67531/metadc65123

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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

  • May 1940

Added to The UNT Digital Library

  • Nov. 17, 2011, 5:13 p.m.

Description Last Updated

  • Jan. 7, 2019, 11:31 a.m.

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McHugh, James G. Comparison of Three Exit-Area Control Devices on an N.A.C.A. Cowling, Special Report, report, May 1940; (https://digital.library.unt.edu/ark:/67531/metadc65123/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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