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RESEARCH PAPERS

Effect of Rotor Design Tip Speed on Aerodynamic Performance of a Model VTOL Lift Fan Under Static and Crossflow Conditions

[+] Author and Article Information
N. O. Stockman, I. J. Loeffler

Lewis Research Center, NASA, Cleveland, Ohio

S. Lieblein

VTOL Propulsion Branch, Lewis Research Center, NASA, Cleveland, Ohio

J. Eng. Power 95(4), 293-300 (Oct 01, 1973) (8 pages) doi:10.1115/1.3445735 History: Received December 19, 1972; Online July 14, 2010

Abstract

Results are presented for a wind tunnel investigation of three single VTOL lift fan stages designed for the same overall total pressure ratio at different rotor tip speeds. The stages were tested in a model lift fan installed in a wing pod. The three stages had essentially the same aerodynamic performance along the operating line. However, differences in stage thrust characteristics were obtained when a variation in back pressure was imposed on the stages by crossflow effects and thrust-vectoring louvers.

Copyright © 1973 by ASME
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