Effect of design changes and operating conditions on combustion and operational performance of a 28-inch diameter ram-jet engine

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

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Description

The results of an altitude test-chamber investigation of the effects of a number of design changes and operating conditions on altitude peformance of a 28-inch diameter ram jet engine are presented. Most of the investigation was for a simulated flight Mach number of 2.0 above the tropopause. Fuel-air distribution, gutter width, the presence of a pilot flame, cimbustion-chamber-inlet temperature, and exhaust-nozzle throat area were found to have significant effects on limits of combustion. Combustion efficiency increased with increasing combustion-chamber-inlet temperature and was adversely affected by an increase in the exhaust-nozzld area. Similiar lean limits of combustion were obtained for both ... continued below

Physical Description

38 p. : ill.

Creation Information

Shillito, T. B. & Nakanishi, Shigeo February 13, 1952.

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

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  • Main Title: Effect of design changes and operating conditions on combustion and operational performance of a 28-inch diameter ram-jet engine
  • Series Title: NACA Research Memorandums

Description

The results of an altitude test-chamber investigation of the effects of a number of design changes and operating conditions on altitude peformance of a 28-inch diameter ram jet engine are presented. Most of the investigation was for a simulated flight Mach number of 2.0 above the tropopause. Fuel-air distribution, gutter width, the presence of a pilot flame, cimbustion-chamber-inlet temperature, and exhaust-nozzle throat area were found to have significant effects on limits of combustion. Combustion efficiency increased with increasing combustion-chamber-inlet temperature and was adversely affected by an increase in the exhaust-nozzld area. Similiar lean limits of combustion were obtained for both Diesel fuel and normal heptane, but combustion efficiences obtained with Diesel fuel were lower than those obtained with normal heptane.

Physical Description

38 p. : ill.

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  • Accession or Local Control No: 93R16062
  • URL: http://hdl.handle.net/2060/19930086772 External Link
  • Report No.: NACA-RM-E51J24
  • Center for AeroSpace Information Number: 19930086772
  • Archival Resource Key: ark:/67531/metadc58955

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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

  • February 13, 1952

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

Description Last Updated

  • May 10, 2018, 10:02 a.m.

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Shillito, T. B. & Nakanishi, Shigeo. Effect of design changes and operating conditions on combustion and operational performance of a 28-inch diameter ram-jet engine, report, February 13, 1952; (digital.library.unt.edu/ark:/67531/metadc58955/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.