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Effect of flight loads on turbofan engine performance deteriorationA significant percentage of high-bypass-ratio turbofan engine performance deterioration is caused by an increase in operating clearance between fan/compressor and turbine blades and their outer air seals. These increased clearances result from rubs induced by a combination of engine power transients and aircraft flight loads. An analytical technique for predicting the effect of quasi-steady state aircraft flight loads on engine performance deterioration has been developed and is presented. Thrust, aerodynamic and inertia loads are considered. Analytical results are shown and compared to actual engine test experience.
Document ID
19790046546
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stakolich, E. G.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Jay, A.
(NASA Lewis Research Center Cleveland, OH, United States)
Todd, E. S.
(United Technologies Corp. Pratt and Whitney Aircraft, East Hartford, Conn., United States)
Kafka, P. G.
(NASA Lewis Research Center Cleveland, OH, United States)
White, J. L.
(Boeing Commercial Airplane Co. Renton, Wash., United States)
Date Acquired
August 9, 2013
Publication Date
March 1, 1979
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: American Society of Mechanical Engineers, Gas Turbine Conference and Exhibit and Solar Energy Conference
Location: San Diego, CA
Start Date: March 12, 1979
End Date: March 15, 1979
Sponsors: American Society of Mechanical Engineers
Accession Number
79A30559
Distribution Limits
Public
Copyright
Other

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