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A Simplified Method for Predicting the Stability of Aerodynamically Excited Turbomachinery

Author
Storace, Albert F.
Published
Oct 1, 1991.
Physical Description
1 electronic document
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
A method is presented for the quick and accurate prediction of the stability of aerodynamically excited turbomachinery using real eigenvalue/eigenvector data obtained from a rotordynamics model. An expression is presented which uses the modal data and the transmitted torque to provide a numerical value of the relative stability of the system. This approach provides a powerful design tool to quickly ascertain the effects of squeeze-film damper bearings, bearing location, and support changes on system stability.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19920005146.
Accession ID: 92N14364.
NASA. Lewis Research Center, Rotordynamic Instability Problems in High-Performance Turbomachinery, 1990; p 285-299.
Terms of Use and Reproduction
No Copyright.
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