Dynamics of Systems That Include Wings in Autorotation

[+] Author and Article Information
D. Seter, A. Rosen

Technion, Haifa 32000, Israel

J. Dyn. Sys., Meas., Control 121(2), 248-254 (Jun 01, 1999) (7 pages) doi:10.1115/1.2802462 History: Received January 25, 1999; Online December 03, 2007


A general multibody model, appropriate for investigating the autorotation of various systems of rigid bodies, is presented. Using the Newton-Euler approach, a generic modular matrix form of the equations of motion is obtained. The general nature of this detailed, nonlinear model allows the description of a large variety of autorotating systems. The calculations of the aerodynamic loads that act on the blades include the use of empirical data combined with an extended blade element/momentum analysis. The model is first validated by comparing its results with analytical results for simple cases. Then the use of the model to investigate the autorotation of a rotor model in a wind tunnel is presented. Good agreement between the experimental and theoretical results is shown.

Copyright © 1999 by The American Society of Mechanical Engineers
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