Fuel feed and power control system for gas turbine engines

Claim 1

IN A CONTROL SYSTEM FOR A GAS TURBINE ENGINE HAVING A BURNER, A CONDUIT FOR CONDUCTING FUEL FLOW TO THE BURNER, VALVE MEANS FOR CONTROLLING THE QUANTITY OF FUEL FLOWING THROUGH SAID CONDUIT, ACCELERATION FUEL SCHEDULING MEANS CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE FLOW REGULATING POSITION THEREOF DURING AN ACCELERATION OF THE ENGINE IN RESPONSE TO AN INPUT SIGNAL SUPPLIED THERETO, AN ENGINE SPEED SENSOR, A HYDRAULIC SERVOMOTOR CONNECTED TO SAID SPEED SENSOR AND SAID ACCELERATION SCHEDULING MEANS TO SUPPLY AN AMPLIFIED INPUT SIGNAL THEREFORE THAT VARIES IN PROPORTION TO ENGINE SPEED, A SPEED RESPONSIVE GOVERNOR DEVICE INCLUDING SPEED SETTING MEANS ALSO OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE FLOW REGULATING POSITION THEREOF DURING EQUILIBRIUM OPERATION OF THE ENGINE TO MAINTAIN A GIVEN SELECTED ENGINE SPEED, PRESSURE SIGNAL RESPONSIVE MEANS CONNECTED TO SAID ENGINE GOVERNOR OPERATIVE TO INITIATE THE GOVERNING ACTION DURING AN ACCELERATION OF THE ENGINE PRIOR TO OR IN ANTICIPATION OF THE ATTAINMENT OF SAID GIVEN SELECTED SPEED IN RESPONSE TO A PRESSURE SIGNAL, AND PRESSURE RATE SIGNAL GENERATING MEANS CONNECTED TO SAID HYDRAULIC SERVOMOTOR OPERATIVE TO GENERATE A PRESSURE RATE SIGNAL THAT IS A FUNCTION OF THE RATE OF CHANGE OF ENGINE SPEED, SAID PRESSURE RATE SIGNAL GENERATING MEANS BEING CONNECTED TO SAID PRESSURE SIGNAL RESPONSIVE MEANS TO SUPPLY SAID PRESSURE RATE SIGNAL AS AN ACTUATING PRESSURE SIGNAL THERETO.