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Longitudinal Combustion Instabilities in Ramjet Engines: Identification of Acoustic Modes

Crump, James E. and Schadow, Klaus C. and Yang, Vigor and Culick, Fred E. C. (1986) Longitudinal Combustion Instabilities in Ramjet Engines: Identification of Acoustic Modes. Journal of Propulsion and Power, 2 (2). pp. 105-109. ISSN 0748-4658.

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Longitudinal combustion instabilities in liquid-fueled ramjet engines have been investigated with attention focused on determination of the acoustic mode structures. Detailed pressure measurements, including both amplitude and phase, were made at ten positions spanning the length of the engine. The experimental data have been analyzed using two linear acoustic models. Four distinct modes were observed for various inlet/combustor combinations. These results help identify the mechanisms exciting low-frequency pressure oscillations in ramjet engines.

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Additional Information:© 1986 AIAA. Received April 4, 1985; revision received Oct. 14, 1985. The work at the Naval Weapons Center was performed under Air Task A3 103 100, Element 61153N and Independent Research Funding 2R000-01-01, Element 61152N; the work at the California Institute of Technology was supported by the Air Force Office of Scientific Research, Grant AFOSR-80-0265. This paper is declared a work of the U.S. Government and therefore is in the public domain.
Group:Guggenheim Jet Propulsion Center, GALCIT
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Air Force Office of Scientific Research (AFOSR)AFOSR-80-0265
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Guggenheim Jet Propulsion CenterUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20101201-085332901
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Official Citation:Longitudinal combustion instabilities in ramjet engines Identification of acoustic modes CRUMP, J. E.;SCHADOW, K. C. (U.S. Navy, Naval Weapons Center, China Lake, CA);YANG, V.;CULICK, F. E. C. (California Institute of Technology, Pasadena) Journal of Propulsion and Power (0748-4658) 1986 vol. 2 no. 2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21085
Deposited By: Ruth Sustaita
Deposited On:01 Dec 2010 21:09
Last Modified:03 Oct 2019 02:19

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