Turbine Engine Compressor Flow Limiting
BENDIX CORP SOUTH BEND IN ENERGY CONTROLS DIV
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Current trend in turbo-gas generator control systems is toward greater use of electronic computer techniques in the control computations. With the increased use of electronics, some greater degree of flexibility in computation can be incorporated, and more signals and greater complexity of control modes appear possible with less weight and size penalty than appears feasible with the more convenient hydromechanical control. Most current controls rely on an open-loop schedule of fuel to avoid compressor stall during acceleration and deceleration of the rotor or rotors. This program which is an extension of an investigation reported by Technical Report AFAPL-TR-71-78 is directed toward closed loop fuel control by sensing pressure relationships at the engine compressor discharge. The control signal was obtained by a special fluidic pressure ratio sensor utilizing the burner wall static pressure and a pressure obtained by a static probe in the last stator vane row.
- Jet and Gas Turbine Engines