Effects of auxiliary and ejector pumping on the Mach number attainable in a 4 1/2- by 4 1/2-inch slotted tunnel at low pressure ratios

One of 5,163 reports in the series: NACA Research Memorandums available on this site.

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Description

Report presenting the results of an investigation to determine the pressure ratios required to operate a slotted tunnel through a range of Mach numbers where the speed variation is affected by removal of air from the main stream by auxiliary pumping, use of a main-stream-operated ejector located downstream of the test section, and a combination of these methods. Testing was conducted in order to improve the accuracy of transonic wind-tunnel testing.

Creation Information

Dennard, John S. & Little, Barney H., Jr. January 22, 1954.

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

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  • Main Title: Effects of auxiliary and ejector pumping on the Mach number attainable in a 4 1/2- by 4 1/2-inch slotted tunnel at low pressure ratios
  • Series Title: NACA Research Memorandums

Description

Report presenting the results of an investigation to determine the pressure ratios required to operate a slotted tunnel through a range of Mach numbers where the speed variation is affected by removal of air from the main stream by auxiliary pumping, use of a main-stream-operated ejector located downstream of the test section, and a combination of these methods. Testing was conducted in order to improve the accuracy of transonic wind-tunnel testing.

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Identifier

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  • : 93R17250
  • URL: http://hdl.handle.net/2060/19930087960 External Link
  • Report No.: NACA-RM-L53K19
  • Center for AeroSpace Information Number: 19930087960
  • Archival Resource Key: ark:/67531/metadc59910

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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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This selection of materials from the Technical Report Archive and Image Library (TRAIL) includes hard-to-find reports published by various government agencies. The technical publications contain reports, images, and technical descriptions of research performed for U.S. government agencies. Topics range from mining, desalination, and radiation to broader physics, biology, and chemistry studies. Some reports include maps, foldouts, blueprints, and other oversize materials.

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Creation Date

  • January 22, 1954

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

Description Last Updated

  • Nov. 27, 2017, 10:32 a.m.

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Citations, Rights, Re-Use

Dennard, John S. & Little, Barney H., Jr. Effects of auxiliary and ejector pumping on the Mach number attainable in a 4 1/2- by 4 1/2-inch slotted tunnel at low pressure ratios, report, January 22, 1954; (digital.library.unt.edu/ark:/67531/metadc59910/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.