24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-6.6.3

INCREASED RBCC EJECTOR PERFORMANCE THROUGH AREA CONSTRICTION

J. Etele, J. P. Sislian
UTIAS, University of Toronto, Canada

Keywords: RBCC, ejector, area constriction

The present paper details the results of a CFD study of several axisymmetric Rocket Based Combined Cycle engine ejector flow field configurations. For a constant area ejector, compression ratios as high as 2.5 can be obtained using a combination of an annular and central rocket. This compression ratio can be increased 23% through a 25% constriction in the exit area over the entire length of the ejector, and a further 5-7% when a combination conical / cylindrical configuration is used.

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