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REVIEW ARTICLES

Theoretical and Experimental Study on Nonlinear Response of a Rotor Blade to a Gust

[+] Author and Article Information
D. M. Tang, E. H. Dowell

Department of Mechanical Engineering and Materials Science, Duke University, Durham NC 27706

Appl. Mech. Rev 46(11S), S3-S11 (Nov 01, 1993) doi:10.1115/1.3122655 History: Online April 29, 2009

Abstract

A rotating slotted cylinder (RSC) gust generator installed in the Duke University low speed wind tunnel was used to generate a gust excitation field and the nonlinear response of a flexible rotor blade to gust excitations was studied theoretically and experimentally. The quantitative agreement between theory and experiment indicates that the assumption of an uniform chordwise gust angle of attack and an approximate solution procedure of the nonlinear equations proposed are allowable for the parameter range considered in this study. For a periodic gust flow field, the effects of geometric structural nonlinearity and aerodynamic nonlinearity on dynamic aeroelastic behavior are significant and lead to aperiodic or chaotic motion when stall occurs.

Copyright © 1993 by American Society of Mechanical Engineers
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