Rig and engine test processes and in-flight operation and safety for modern gas turbine engines can be greatly improved with the development of accurate on-line measurement to gauge the aerodynamic stability level for fans and compressors. This paper describes the development and application of a robust real-time algorithm for gauging fan/compressor aerodynamic stability level using over-the-rotor dynamic pressure sensors. This real-time scheme computes a correlation measure through signal multiplication and integration. The algorithm uses the existing speed signal from the engine control for cycle synchronization. The algorithm is simple and is implemented on a portable computer to facilitate rapid real-time implementation on different experimental platforms as demonstrated both on a full-scale high-speed compressor rig and on an advanced aircraft engine. In the multistage advanced compressor rig test, the compressor was moved toward stall at constant speed by closing a discharge valve. The stability management system was able to detect an impending stall and trigger opening of the valve so as to avoid compressor surge. In the full-scale engine test, the engine was configured with a one-per-revolution distortion screen and transients were run with a significant amount of fuel enrichment to facilitate stall. Test data from a series of continuous rapid transients run in the engine test showed that in all cases, the stability management system was able to detect an impending stall and manipulated the enrichment part of the fuel schedule to provide stall-free transients.
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July 2008
Research Papers
Development and Demonstration of a Stability Management System for Gas Turbine Engines
D. Christensen,
D. Christensen
GE Aircraft Engines
, Cincinnati, OH 45215
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P. Cantin,
P. Cantin
GE Aircraft Engines
, Cincinnati, OH 45215
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D. Gutz,
D. Gutz
GE Aircraft Engines
, Cincinnati, OH 45215
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P. N. Szucs,
P. N. Szucs
GE Aircraft Engines
, Cincinnati, OH 45215
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A. R. Wadia,
A. R. Wadia
GE Aircraft Engines
, Cincinnati, OH 45215
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J. Armor,
J. Armor
Georgia Institute of Technology
, Atlanta, GA 30332
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M. Dhingra,
M. Dhingra
Georgia Institute of Technology
, Atlanta, GA 30332
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Y. Neumeier,
Y. Neumeier
Georgia Institute of Technology
, Atlanta, GA 30332
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J. V. R. Prasad
J. V. R. Prasad
Georgia Institute of Technology
, Atlanta, GA 30332
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D. Christensen
GE Aircraft Engines
, Cincinnati, OH 45215
P. Cantin
GE Aircraft Engines
, Cincinnati, OH 45215
D. Gutz
GE Aircraft Engines
, Cincinnati, OH 45215
P. N. Szucs
GE Aircraft Engines
, Cincinnati, OH 45215
A. R. Wadia
GE Aircraft Engines
, Cincinnati, OH 45215
J. Armor
Georgia Institute of Technology
, Atlanta, GA 30332
M. Dhingra
Georgia Institute of Technology
, Atlanta, GA 30332
Y. Neumeier
Georgia Institute of Technology
, Atlanta, GA 30332
J. V. R. Prasad
Georgia Institute of Technology
, Atlanta, GA 30332J. Turbomach. Jul 2008, 130(3): 031011 (9 pages)
Published Online: May 2, 2008
Article history
Received:
January 2, 2007
Revised:
January 19, 2007
Published:
May 2, 2008
Citation
Christensen, D., Cantin, P., Gutz, D., Szucs, P. N., Wadia, A. R., Armor, J., Dhingra, M., Neumeier, Y., and Prasad, J. V. R. (May 2, 2008). "Development and Demonstration of a Stability Management System for Gas Turbine Engines." ASME. J. Turbomach. July 2008; 130(3): 031011. https://doi.org/10.1115/1.2777176
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