Active Control of Integrated Inlet/Compression Systems: Initial Results

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Douglas G. Macmartin, Ashish Verma, Richard M. Murray, James D. Paduano
2001 ASME Fluids Engineering Division Summer Meeting

Substantial reductions in aircraft size are possible if shorter, more aggressive, serpentine inlet ducts are used for low-observability constrained propulsion installations. To obtain this benefit, both inlet separation and compressor stall dynamics must be controlled. In this paper the integrated control of this coupled inlet/compression system is considered. Initial results are shown using separation point actuation to control both separation and stall dynamics. Calculations show that separation can be substantially reduced with approximately 1.2% core flow, based on scaling previous results. Simulation results using a medium fidelity model show that proportional control of distortion has little effect on stall behavior.