SYS103 Flashcards
The engine cowling performs what functions?
It protects the engine and components, decreases drag, and provides an inlet for the engine.
The purpose of the inertial separator is to:
Keep debris away from the engine.
Are the compressor and power turbines physically connected?
No they are not.
What three elements are necessary for engine operation, and what provides each?
Air - Inlet
Fuel - FMU
Heat - Spark Igniters
Does the exhaust provide extra thrust?
Yes, it provides some thrust.
What position is the starter switch in that automatically energizes and de-energizes the igniters for engine start?
AUTO/RESET
The primary purpose of the ignition system is to:
Ignite the air and fuel mixture in the combustion chamber.
Friction control settings made to the from PCL affect the rear PCL. (T/F)?
True
When starting the T-6A, the PCL should be in the:
Start ready position
The PMU is located:
underneath the engine, in the accessory compartment.
The PMU performs what functions?
Maintains operating limits
Processes power requests
Controls the engine and propeller
Provides a near linear power response
The PMU STATUS annunciator light illuminates after landing when the PMU:
needs maintenance
After engine start, the starter becomes a:
generator
The MANUAL starter switch position will be used under normal circumstances. (T/F)?
False
If oil pressure is _______ psi or below at IDLE power, the red OIL PX annunciator will illuminate.
15
If oil pressure remains between 15 and 40 psi at IDLE power for more than 5 seconds, _________ will be illuminated.
both the amber and red OIL PX annunciators
The oil system provides filtered oil to which systems?
The propeller, reduction gears, and engine.
The chip detector sensor is located in the:
reduction gearbox
The reduction gearbox reduces engine output from _____ RPM to propeller speeds of ______ RPM.
30,000, 2000
The phase shift torque probe monitors:
propeller speed (Np) and Torque
The PIU
regulates oil pressure to the pitch change mechanism
If the propeller pitch change mechanism loses oil pressure, the propeller will automatically move towards:
the feathered position
Varying level of thrust are achieved by changing:
propeller pitch
If the oil filter gets clogged,
the system uses unfiltered oil
The PMU
keeps the engine and propeller within operating limits
In straight and level flight for PCL positions above IDLE, the oil pressure should be maintained between:
90 and 120 psi
The phase shift torque probe is located
in the reduction gearbox
Propeller pitch refers to:
the angle of the propeller blades
Which propeller position produces the least amount of drag?
Feathered
The propeller pitch change mechanism is able to change propeller blade angle by using:
oil pressure
The PMU directs the PIU to maintain propeller RPM at
2000 RPM
The power turbine is driven by:
expanding gases
During aerobatic flight, oil pressure should be maintained at or above:
40 psi
