Abstract:
A control for a gas turbine engine includes a fuel metering valve operated directly by the vehicle operator and a metering head regulating valve controlled electronically in response to engine operating parameters; also variable geometry means in the engine to accommodate to varying airflow and power levels which are actuated by a servomechanism controlled by the position of the vehicle operator''s power control. In the event of failure of the electronic controls, the metering head drops to a value which is safe at any throttle opening but sufficient to run the engine.