Some Recent Advances in the Understanding and Prediction of Turbomachine Subsonic Stall Flutter

[+] Author and Article Information
R. M. Chi, A. V. Srinivasan

Applied Mechanics Research, United Technologies Research Center, East Hartford, Conn. 06108

J. Eng. Gas Turbines Power 107(2), 408-417 (Apr 01, 1985) (10 pages) doi:10.1115/1.3239741 History: Received January 09, 1984; Online October 15, 2009


In this paper, some recent advances in the understanding and prediction of subsonic flutter of jet engine fan rotor blades are reviewed. Among the topics discussed are (i) the experimental evidence of mistuning in flutter responses, (ii) new and promising unsteady aerodynamic models for subsonic stall flutter prediction, (iii) an overview of flutter prediction methodologies, and (iv) a new research effort directed toward understanding the mistuning effect on subsonic stall flutter of shrouded fans. A particular shrouded fan of advanced design is examined in the detailed technical discussion.

Copyright © 1985 by ASME
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