Investigation of the Transient Response of a Dual-Rotor System With Intershaft Squeeze-Film Damper

[+] Author and Article Information
Qihan Li

Jet Propulsion Department, Beijing Institute of Aeronautics & Astronautics, People’s Republic of China

J. F. Hamilton

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Eng. Gas Turbines Power 108(4), 613-618 (Oct 01, 1986) (6 pages) doi:10.1115/1.3239955 History: Received May 13, 1985; Online October 15, 2009


A method is presented for calculating the dynamics of a dual-rotor gas turbine engine equipped with a flexible intershaft squeeze-film damper. The method is based on the functional expansion component synthesis method. The transient response of the rotor due to a suddenly applied imbalance in the high-pressure turbine under different steady-speed operations is calculated. The damping effects of the intershaft damper and stability of the rotor system are investigated.

Copyright © 1986 by ASME
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