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RESEARCH PAPERS

The Unsteady Aerodynamics of a Finite Supersonic Cascade With Subsonic Axial Flow

[+] Author and Article Information
J. M. Verdon

United Aircraft Research Laboratories, East Hartford, Conn.

J. Appl. Mech 40(3), 667-671 (Sep 01, 1973) (5 pages) doi:10.1115/1.3423070 History: Received January 01, 1972; Revised January 01, 1973; Online July 12, 2010

Abstract

A method is presented for determining the unsteady flow field and the aerodynamic response which occurs when a finite oscillating cascade is placed in a supersonic stream, which has a subsonic velocity component normal to the cascade. Solutions are obtained through the combined use of closed-form and numerical procedures. Computed results indicate that the finite cascade analysis should provide a reasonable indication of the influence of the cascade parameters on the response of the infinite array. A brief parametric study for a typical configuration reveals possible aerodynamic instabilities when the blades perform single-degree-of-freedom pitching oscillations over a broad range of frequencies and interblade phase angles.

Copyright © 1973 by ASME
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