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Considerations for the Extension of Gas Path Analysis to Electrified Aircraft Propulsion SystemsAircraft operators rely on gas path analysis techniques for monitoring the performance and health of their gas turbine engine assets. This is accomplished by analyzing discernable shifts in measurement parameters acquired from the engine. This paper reviews the founding mathematical principles of gas path analysis, including conventional approaches applied for estimating engine performance deterioration. Considerations for extending the application of gas path analysis techniques to Electrified Aircraft Propulsion (EAP) systems is also discussed, and simulated results from their application to an EAP concept comprised of turbomachinery and electrical system hardware is provided. Results are provided comparing the parameter estimation accuracy offered by taking a whole-system approach towards the problem setup versus that offered by analyzing each subsystem individually. For the latter, the importance of having accurate direct or inferred measurements of external mechanical torque loads placed upon turbomachinery shafts is emphasized.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Donald L Simon
(Glenn Research Center Cleveland, Ohio, United States)
Randy Thomas
(Glenn Research Center Cleveland, Ohio, United States)
Kyle M. Dunlap
(University of Cincinnati Cincinnati, Ohio, United States)
Date Acquired
April 14, 2021
Publication Date
June 7, 2021
Publication Information
Publication: 2021 ASME Turbo Expo Conference Proceedings
Publisher: ASME
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
Meeting Information
Meeting: 2021 ASME Turbo Expo
Location: Virtual
Country: US
Start Date: June 7, 2021
End Date: June 11, 2021
Sponsors: American Society of Mechanical Engineers
Funding Number(s)
WBS: 081876.
Distribution Limits
Portions of document may include copyright protected material.
Technical Review
NASA Technical Management
Electrified Aircraft Propulsion
Health Management
Gas Path Analysis
Performance Estimation
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