bendix fuel control system theory of operation aviation department presents instructor: terry mooney...
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Bendix Fuel Control System Theory of Operation
Aviation Department Presents
Instructor: Terry Mooney
COPYRIGHT 2002, NORTHERN LIGHTS COLLEGE. ALL RIGHTS RESERVED. FOR USE OF THIS PRESENTATION PLEASE CONTACT NORTHERN LIGHTS COLLEGE AVIATION DEPARTMENT.
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Principle ComponentsFuel pump
-receives fuel from airframe boost pumps-increases fuel pressure for use at the engine-receives bypass fuel from fuel control
Gas 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 engine
Power turbine governor-monitors power turbine speed-receives power input signals from collective lever-resets fuel control schedule to adjust gas producer in order to maintain power turbine at constant speed
Fuel nozzle-delivers scheduled fuel to combustion chamber
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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) position
Fuel nozzle-regulated fuel flow from fuel control
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