A Study of Propulsion Optimization Control Modes

Propulsion optimization control modes compute a set of trim commands to the Digital Electronic Engine Controller by Linear Programming,this approach results in significant performance improvements of aero-engine.Adaptive engine model is applied in order to accommodate the off-nominal effects and engine-to-engine variations.The structure of the optimization control system is designed and control algorithm is developed.Digital simulations are conducted with two optimization modes:maximum thrust mode and minimum fuel consumption mode.Simulation results presented here demonstrate that during accelerating flight at constant altitude thrust increases up to approximately 10 percent in the maximum thrust mode,and at subsonic cruise specific fuel consumption decreases up to 2 percent in the minimum fuel consumption mode.