Systems Flashcards
What three things are needed for engine operation (big picture)?
Air, fuel, and heat
What does the inertial separator do?
It’s an air duct system which separates heavy particles from air before they go into the engine compressor
What does a free turbine engine mean?
It’s an engine where the compressor and turbine are not connected by a shaft.
What are the major sections of the engine?
Accessory compartment, gas generation section, and power turbine section
What’s in the accessory compartment?
Accessory gearbox, oil tank, starter/gen, battery. The starter is the only thing which directly relates to engine ops.
What’s in the gas generation section?
The compressor inlet, combustion chamber, 4-stage axial flow compressor and single stage centrifugal compressor
What’s in the power turbine section?
Power turbines (duh), exhaust case, reduction gearbox, and prop shaft
True/False. The power turbine and compressor turbine run in opposite directions.
True. They are not physically connected.
What drives the reduction gearbox?
The power turbine.
What are the components of the engine ignition system?
Starter (Air), fuel management unit (fuel), and ignition system (heat)
What are the parts of the ignition system?
It’s a dual spark ignition system which provides quick light ups over a wide temperature range. There’s the ignition exciter, 2 high V igniter cables, and 2 spark igniters.
What does the PCL control with regards to the engine?
Fuel flow through the Fuel Mgt Unit (FMU) both mechanically and electrically
What is a cam?
A rotating or sliding piece in a mechanical linkage by which rotary motion is transformed into linear motion or vice versa
