9-17 - Ignition system o Magnetos o Operate independent of...

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Ignition system o Magnetos Operate independent of aircraft electrical system o 2 used for safety and more efficient combustion Pre-take-off check o Recommended RPM o From both two clicks left o Select right mag. Note RPM drop o Select both note RPM o Select LEFT, note RPM drop o Select BOTH, note return to original RPM Induction system o Supplies air to engine for combustion o Consists of Air filter Ducting to carburetor Intake manifold leading from carburetor or fuel injection system Starter o Electrical o “Armstrong” Hand propping on some planes Fuel metering to engine o Carburetor Measures airflow and meters fuel being mixed with air Accelerator pump
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Raw fuel into engine when throttle is advanced Idle system Separate fuel delivery system for low speed Engine might not start unless throttle is in idle range o Fuel injection o Ideal fuel/air mixture is 1:12 o Combustion can happen between 1:8 (rich) and 1:20 (lean) o Too rich is better than too lean
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This note was uploaded on 03/03/2010 for the course AERF 1103 taught by Professor Visser during the Fall '08 term at LeTourneau.

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9-17 - Ignition system o Magnetos o Operate independent of...

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