Presentation on theme: "Bendix Fuel Control System Theory of Operation"— Presentation transcript:
1 Bendix Fuel Control System Theory of Operation Aviation Department PresentsBendix Fuel Control SystemTheory of OperationInstructor: Terry MooneyCOPYRIGHT 2002, NORTHERN LIGHTS COLLEGE. ALL RIGHTS RESERVED. FOR USE OF THIS PRESENTATIONPLEASE CONTACT NORTHERN LIGHTS COLLEGE AVIATION DEPARTMENT.
2 Principle Components Fuel pump -receives fuel from airframe boost pumps-increases fuel pressure for use at the engine-receives bypass fuel from fuel controlGas producer fuel control-regulates fuel pressure from pump-automatically schedules fuel from light off to idle-accelerates engine to operational speed-cuts off fuel flow to shut down enginePower turbine governor-monitors power turbine speed-receives power input signals from collective lever-resets fuel control schedule to adjust gas producer inorder to maintain power turbine at constant speedFuel nozzle-delivers scheduled fuel to combustion chamber
3 Input Parameters Gas producer fuel control -fuel pressure from engine driven pump-gas producer turbine RPM-compressor discharge air pressure (Pc)-throttle position (twist grip) lever-power turbine governor reset pressures (Pr & Pg)-power turbine governor over-speed pressure (Py bleed)Power turbine governor-power turbine RPM-compressor discharge air pressure-power lever (collective) positionFuel nozzle-regulated fuel flow from fuel control