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Modeling pressure oscillations in Ramjets

Culick, F. E. C. and Rogers, T. (1980) Modeling pressure oscillations in Ramjets. AIAA Papers, AIAA 80-1192. American Institute of Aeronautics and Astronautics , New York. http://resolver.caltech.edu/CaltechAUTHORS:20101209-074709263

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Abstract

Pressure oscillations in ramjet engines are approximated as one-dimensional motions and treated within linear acoustics. The exhaust nozzle is represented by the admittance function for a short choked nozzle. New results have been obtained for the quasi-steady response of a normal shock wave in the diffuser. Acoustic fields in the inlet region and in the combustion chamber are matched to provide an analytical expression of the criterion for linear stability. Combustion processes are accommodated but not treated in detail. As examples, data are discussed for two liquid-fueled engines, one having axial dump and one having side dumps.


Item Type:Report or Paper (Report)
Additional Information:© 1980, AIAA. Sponsored By:American Institute of Aeronautics and Astronautics (AIAA), Society of Automotive Engineers (SAE), American Society of Mechanical Engineers (ASME). This work was sponsored in part by the Navy-Liquid Fuel Ramjet Engine Component Technology (N00123-77-C-0541) and by the Air Force-Liquid Fuel Ramjet Engine Demonstrator (F33615-76-C-2073) (LFRED) Programs.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Navy-Liquid Fuel Ramjet Engine Component TechnologyN00123-77-C-0541
Air Force-Liquid Fuel Ramjet Engine Demostrator (LFRED)F33615-76-C-2073
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
AIAA80-1192
Record Number:CaltechAUTHORS:20101209-074709263
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101209-074709263
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21252
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2010 23:06
Last Modified:26 Dec 2012 12:44

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