Power Plant (Engine) Flashcards
Approximately ______% of the total airflow into combustion section of the C20J engine is required for combustion. The remaining air used as cooling air and to drive 5 bleed air accessories
20-25
During the start sequence, the spark from the ignitor plug will cease _________
When the starter button is released
The gas turbine principles take advantage of what kind of forces?
Impact & amp; Reaction
Which statement best describes the model 250 C20J turbine engine?
Internal combustion gas turbine engine featuring a free power turbine
The 5th stage bleed air control valve provides what two functions?
Aids in rapid engine accelearation, helps prevent compressor stall
The LOW INPUT PRESSURE caution light indicates that
The air barrier filter is clogged
The ____ _____ principle, used to design the C20J engine, takes advantage of the impact and reaction of combustion gasses passing through turbine blades and rotors
Gas turbine
How are the gas producer fuel control and governor integrated?
By pneumatic means
How is droop compensated for on the C20J turbine engine?
Through mechanical linkage, electrical components, and pneumatic means
What is designed to reduce the high RPM required for hp development to a more practical RPM at the output pads?
2 separate gear twins
The C20J engine compressor section provides _ ____ stages of compression and _ _____ stage(s) of compression
6 axial, 1 centrifugal
Which TH-67 engine instruments are considered to be wet line instrument?
Engine oil pressure, torque
High RPM produced by turbine engines are reduced to useable levels by?
2 separated gear trains
The Air Barrier Filter, installed forward of the compressor front support hub, is designed to
Provide clean, particle free air to the compressor
The ______ ____ on the C20J engine is driven by the N2 power turbine gear train
Torque meter
What are the advantages of the free power turbine engine?
Reduced load, each turbine operates at optimum RPM capacity
Which engine bearings are extremely lubricated?
1, 6, 7, 8
The Engine Chip light will illuminate if?
Sufficient ferrous material contacts the magnetic chip detector
How many different chip detectors can activate the ENG CHIP caution light?
2
What are the 4 sections of the 250-C20J turbine engine?
The compressor, power and accessory gearbox, turbine, and combustion
What is used to secure the engine to the aircraft?
3 bipod mounts
There are _ bipod mounts that are used to ____ mount the engine.
3, rigidly
What are the elements required to start the engine?
Spark, air, fuel
What is the indication that the Engine Barrier Filter is clogged?
LOW INLET PRESSURE caution light is illuminated
