An adaptive, integrated flight/propulsion control algorithm called Performance Seeking Control (PSC) has been developed to optimize total aircraft performance during steady-state engine operation. The multimode algorithm will minimize fuel consumption at cruise conditions; maximize excess thrust (thrust minus drag) during aircraft accelerations, climbs, and dashes; and extend engine life by reducing Fan Turbine Inlet Temperature (FTIT) when the extended life mode is engaged. On-board models of the inlet, engine, and nozzle are optimized to compute a set of control trims, which are then applied as increments to the nominal engine and inlet control schedules. The on-board engine model is continually updated to match the operating characteristics of the actual engine cycle through the use of a Kalman filter, which accounts for anomalous engine operation. The PSC algorithm will be flight demonstrated on an F-15 test aircraft under the direction of the NASA Ames/Dryden Flight Research Facility. This paper discusses the PSC design strategy, describes the control algorithm, and presents results from high-fidelity, nonlinear aircraft/engine simulations. Simulation results indicate that thrust increases as high as 15 percent and specific fuel consumption reductions up to 3 percent are realizable by the PSC system.
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January 1991
Research Papers
Optimizing Aircraft Performance With Adaptive, Integrated Flight/Propulsion Control
R. H. Smith,
R. H. Smith
McDonnell Aircraft Company, McDonnell Douglas Corporation, St. Louis, MO 63043
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J. D. Chisholm,
J. D. Chisholm
McDonnell Aircraft Company, McDonnell Douglas Corporation, St. Louis, MO 63043
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J. F. Stewart
J. F. Stewart
NASA-AMES/DRYDEN, Edwards Air Force Base, CA 93523
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R. H. Smith
McDonnell Aircraft Company, McDonnell Douglas Corporation, St. Louis, MO 63043
J. D. Chisholm
McDonnell Aircraft Company, McDonnell Douglas Corporation, St. Louis, MO 63043
J. F. Stewart
NASA-AMES/DRYDEN, Edwards Air Force Base, CA 93523
J. Eng. Gas Turbines Power. Jan 1991, 113(1): 87-94 (8 pages)
Published Online: January 1, 1991
Article history
Received:
February 21, 1990
Online:
April 24, 2008
Citation
Smith, R. H., Chisholm, J. D., and Stewart, J. F. (January 1, 1991). "Optimizing Aircraft Performance With Adaptive, Integrated Flight/Propulsion Control." ASME. J. Eng. Gas Turbines Power. January 1991; 113(1): 87–94. https://doi.org/10.1115/1.2906535
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