Abstract: In a turbine engine having a compressor with a bleed valve and a variable geometry apparatus is responsive to an operational control member for regulating the flow rate of fuel supplied the turbine engine as a function of atmospheric pressure and the temperature of air supplied to the compressor corresponding to movement of a power lever by an operator to a desired operation of the turbine engine. The power lever has an indicator member fluidically connected to a follower member linked to the operational control member. The fluidic connection is responsive to operational parameters of the turbine engine and limits the rotational input to the follower member when the rate of fuel flow could cause stalling and the development of an unacceptable operating temperature or overspeed condition in the turbine engine.

Abstract: A sensor responsive to a differential pressure between a fluid in a reservoir and the surrounding environment for operating a switch to activate and deactivate a pump and maintain the pressure of the fluid in the reservoir within a predetermined range.

Abstract: A timer mechanism for controlling the scheduling of the flow of fuel through a metering valve to a turbine engine in response to rotation of a scheduling cam by the movement of a power lever from a cut-off position. A temperature compensating apparatus connected to the turbine engine modifies the output of the scheduling cam to compensate for the temperature of the air supplied to the turbine engine and a pressure responsive apparatus connected to the timer mechanism further modifies the output of the scheduling cam to compensate for the atmospheric pressure of the surrounding environment to provide the optimum fuel flow for starting the turbine engine under varied operational conditions.

Abstract: Control apparatus for programmed control of a plurality of gas turbine engine compressor air bleed valves in response to a plurality of control input signals representing engine operating conditions including variable conditions related to engine power output. The control inputs are sensed and/or computed and scheduled to provide accurate and reliable control over a plurality of compressor air bleed valves by means including a hydraulic programmer with a three dimensional compressor rise scheduling cam and adjustable hydraulic timers.

Abstract: Control apparatus for programmed control of a plurality of gas turbine engine compressor air bleed valves in response to a plurality of control input signals representing engine operating conditions including variable conditions related to engine power output. The control inputs are sensed and/or computed and scheduled to provide accurate and reliable control over a plurality of compressor air bleed valves by means including a hydraulic programmer with a three dimensional compressor rise scheduling cam and adjustable hydraulic timers.