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RESEARCH PAPERS

Measurement of Aerodynamic Work During Fan Flutter

[+] Author and Article Information
A. P. Kurkov

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135

J. Eng. Power 105(1), 204-211 (Jan 01, 1983) (8 pages) doi:10.1115/1.3227390 History: Received May 05, 1982; Online September 28, 2009

Abstract

Stationary high-response pressure and displacement measurements are used to describe the flutter characteristics of the first fan-rotor of a turbofan engine. Flutter occurred at part speed and at high incidence. Several forward and backward traveling waves were identified in a predominantly torsional flutter mode. Positive aerodynamic work contribution was confined to the region close to the leading edge and was mainly due to modes corresponding to forward traveling waves of nodal diameters in the range 3 to 5.

Copyright © 1983 by ASME
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