A Chambered Porous Damper for Rotor Vibration Control: Part I—Concept Development

[+] Author and Article Information
J. Tecza, J. Walton

Mechanical Technology Inc., Latham, NY 12110

J. Eng. Gas Turbines Power 115(2), 360-365 (Apr 01, 1993) (6 pages) doi:10.1115/1.2906717 History: Received March 04, 1991; Online April 24, 2008


In this paper a novel, high-load chambered porous damper design, supporting analysis, and experimental results are presented. It was demonstrated that significant damping can be generated from the viscous discharge losses of capillary tubes arranged in chambered segments with large radial clearances and that the resulting damping is predictable and fairly constant with speed and eccentricity ratio. This design avoids the nonlinearities associated with high-eccentricity operation of conventional squeeze film dampers. Controlled orbit tests with a porous chambered configuration were completed and favorably compared with theoretical predictions. The ability to accommodate high steady-state and transient imbalance conditions makes this damper well suited to a wide range of rotating machinery, including aircraft gas turbine engines.

Copyright © 1993 by The American Society of Mechanical Engineers
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