Turbine ignition and starting systems Flashcards
What are the main components of a turbine engine ignition system?
-Igniters
-Exciters
-High tension leads
How do you turn off a turbine engine?
Cut off the fuel supply
What is a flameout?
When the flame in the combustion chamber goes out when it’s not supposed to. Usually caused by an interruption of airflow through the engine.s
Turbine engines use what type of ignition system?
Capacitive discharge system
Where are the high-voltage pulse formed?
At the triggering transformer/capacitor
After removing a lead from the igniter, what do you do with the center wire?
Contact to ground
In what condition are are ignition systems energized at all times?
-Takeoff
-Landing
-Turbulence
-Icing conitions
Why are high energy spark igniters not subject to carbon fouling?
The intense spark cleans the deposits that would otherwise form on the firing endaa
What are the two types of igniters used in turbine engines?
-Spark igniters
-Glow plugs
What are the two types of starters?
-Pneumatic
-Electric motors
What is the an advantage of air starters over electric starters?
High power to weight ratio
How is air supplied to an air starter?
-APU
-Bleed air
-Huffer cart GPU
What component releases the air starter from the gear box once the engine reaches self-sustaining speed?
Sprag clutch
What is a choked nozzle?
It prevents the air supply from spinning the air turbine to its burst speed
