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Aerodynamic performance of a 1.35-pressure-ratio axial-flow fan stage

Walter M. Osborn, R. D. Moore, R. J. Steinke

Abstract

The overall blade element performances and the aerodynamic design parameters are presented for a 1.35-pressure-ratio fan stage. The fan stage was designed for a weight flow of 32.7 kilograms per second and a tip speed of 302.8 meters per second. At design speed the stage peak efficiency of 0.879 occurred at a pressure ratio of 1.329 and design flow. Stage stall margin was approximately 14 percent. At design flow rotor efficiency was 0.94 and the pressure ratio was 1.360.

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Key concepts: Overall pressure ratio, Stall (fluid mechanics), Aerodynamics, Stage (stratigraphy), Mechanics, Materials science, Engineering, Physics