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- W1567663173 abstract "Abstract : In modern turbofan engines, variable geometry has been incorporated to improve some off-design performance. Most control designs ignore this variable geometry and use fuel metering as the primary control input. This thesis investigates the use of variable geometry to control the engine and, thereby, reduce fuel consumption due to transients. Additionally, steady-state trim conditions are altered to reduce the static fuel consumption. The non-linear transient simualtion program is used to analyze the steady-state operating condition and develop small perturbation control limitations. Linear models, both large and reduced order, are used in analyzing the effect of controllers on system response. A computer program was generated to reduce a large order linear model to a usable size for control system development. This analysis shows the reduced-order regime dependent controllers to be viable and to favorably enhance the quest for reducing specific fuel consumption in existing engines. (Author)" @default.
- W1567663173 created "2016-06-24" @default.
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- W1567663173 date "1981-09-01" @default.
- W1567663173 modified "2023-09-22" @default.
- W1567663173 title "Effect on Fuel Efficiency of Parameter Variations in the Cost Function for Multivariable Control of a Turbofan Engine." @default.
- W1567663173 hasPublicationYear "1981" @default.
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