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JT9D jet engine performance deteriorationThe analytical techniques utilized to examine the effects of flight loads and engine operating conditions on performance deterioration are presented. The role of gyroscopic, gravitational, and aerodynamic loads are shown along with the effect of variations in engine build clearances. These analytical results are compared to engine test data along with the correlation between analytically predicted and measured clearances and rub patterns. Conclusions are drawn and important issues are discussed.
Document ID
19780019107
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jay, A. (Pratt and Whitney Aircraft Group East Hartford, CT, United States)
Todd, E. S. (Pratt and Whitney Aircraft Group East Hartford, CT, United States)
Sallee, G. P. (Pratt and Whitney Aircraft Group East Hartford, CT, United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Publication Information
Publication: NASA. Langley Res. Center CTOL Transport Technol., 1978
Subject Category
Aircraft Propulsion And Power
Accession Number
78N27050
Funding Number(s)
CONTRACT_GRANT: NAS3-20632
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19780019103Collected WorksCTOL Transport Technology, 1978
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