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RESEARCH PAPERS

Aerodynamic and Aeroelastic Characteristics of Oscillating Loaded Cascades at Low Mach Number—Part II: Stability and Flutter Boundaries

[+] Author and Article Information
T. J. Akai, H. Atassi

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind. 46556

J. Eng. Power 102(2), 352-356 (Apr 01, 1980) (5 pages) doi:10.1115/1.3230261 History: Received December 18, 1978; Online September 28, 2009

Abstract

The aerodynamic coefficients obtained from the analysis developed in Part I of this paper are utilized here to investigate stability and flutter boundaries for loaded cascades of airfoils with finite thickness. Combined bending and torsional oscillations for different stiffness ratios are studied for compressor and turbine cascades. The results show very significant effects of blade geometry and mean flow incidence on the stability and flutter boundaries. These effects are basically the consequence of strong coupling between the steady and unsteady aerodynamics of the cascade.

Copyright © 1980 by ASME
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