Health Monitoring of Variable Geometry Gas Turbines for the Canadian Navy

[+] Author and Article Information
D. E. Muir

GasTOPS Ltd., Ottawa, Canada

H. I. H. Saravanamuttoo

Carleton University/GasTOPS Ltd., Ottawa, Canada

D. J. Marshall

Canadian Forces, Ottawa, Canada

J. Eng. Gas Turbines Power 111(2), 244-250 (Apr 01, 1989) (7 pages) doi:10.1115/1.3240243 History: Received October 01, 1987; Online October 15, 2009


The Canadian Department of National Defence has identified a need for improved Engine Health Monitoring procedures for the new Canadian Patrol Frigate (CPF). The CPF propulsion system includes two General Electric LM2500 gas turbines, a high-pressure-ratio engine with multiple stages of compressor variable geometry. A general method for predicting the thermodynamic performance of variable geometry axial compressors has been developed. The new modeling technique is based on a meanline stage-stacking analysis and relies only on the limited performance data typically made available by engine manufacturers. The method has been applied to the LM2500-30 marine gas turbine and the variations in engine performance that can result from a malfunction of the variable geometry system in service have been estimated.

Copyright © 1989 by ASME
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