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RESEARCH PAPERS

Experimental Study of a High-Throughflow Transonic Axial Compressor Stage

[+] Author and Article Information
A. J. Wennerstrom

Aero Propulsion Laboratory, Air Force Wright Aeronautical Laboratories, Wright—Patterson AFB, Ohio 45433

J. Eng. Gas Turbines Power 106(3), 552-560 (Jul 01, 1984) (9 pages) doi:10.1115/1.3239606 History: Online October 15, 2009

Abstract

Design information and experimental results are presented for a transonic axial compressor stage passing 40 lbs/s-ft2 frontal area (195 Kg/s-m2 ) with a pressure ratio of 1.95 at 1500 ft/s (457 m/s) tip speed. The design incorporates several unusual features that helped it achieve a peak isentropic efficiency over 88 percent at design speed. The compressor was evaluated at three rotor tip clearances and an optimum was found. Vortex generators placed upstream on the casing proved relatively ineffective in influencing stall margin. Vortex generators installed on the rotor did improve stall margin and also increased efficiency at speeds of 90 percent and below.

Copyright © 1984 by ASME
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