JT9D-7A /SP/ jet engine performance deterioration trendsIt is noted that increasing fuel costs and the decreasing availability of fuel supplies have lead to an increase in the importance of maintaining good specific fuel consumption over the life cycle of jet engines. Attention is given to an engine diagnostics program sponsored by NASA Lewis Research Center which has the objectives of identifying and quantifying the levels, trends, and causes of engine performance deterioration. It is reported that as part of the program, a series of installed engine calibrations were performed on two new Pan American World Airways 747 SP aircraft. A discussion of this specific test program and the results of the analysis of the data are presented.
Document ID
19800060060
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Richter, G. P. (NASA Lewis Research Center Cleveland, Ohio, United States)
Olsson, W. J. (United Technologies Corp. Pratt and Whitney Aircraft Group, East Hartford, Conn., United States)
Andersen, N. B. (Pan American World Airways, Inc. Kennedy International Airport, N.Y., United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1980
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: International Aircraft Maintenance Engineering Exhibition and Conference