Power Plant Flashcards
Combustion chamber type
Reverse flow annular combustion
Compressor types
2x Centrifugal compressors each driven by a single stage axial turbine
Propeller driven by
2 stage axial power turbine driving the inner 3rd shaft.
total number of compressors and turbines
2 compressors
4 turbines
Fuel nozzles and spark ignitors plugs
14 fuel nozzles and 2 spark ignitor plugs.
Positions of turbine information
p2.5 low pressure
p3 high pressure
T6 temperature (ITT inner turbine temp) gives an average turbine temp
Oil burn rate
2.5Quarts every 10hrs
Leave the oil level at the Add 1 level.
Bleed air taken from where in the engine
Bleed air taken from p2.5 and p3
2 bleed ports 12oclock and 10oclock position
Prop feather aux oil tank capacity
0.3 gallon
Oil pressure guage
of scale power loss indication
28vdc
5vdc back lighting
Low oil pressure
bellow 40psi
low propeller oil pressure will automatically turn of prop heating.
low oil pressure range allowed with low power settings
40-55psi allowed with only NH bellow 75% (Flight idle is 72%)
Ignition abort simulates what?
Sends an artificial 50%NH signal
Start sequence
10% NH Fuel introduction within 10 seconds T6 rise (20% EEC on) 35-45% check positive oil pressure (45%max limit) 62% ground idle.
How do you know its a hot start
Fast rise in T6
Fuel cut-off and abort at 30sec starter limit.
