Powerplant Flashcards
What is the thrust rating without APR/with APR?
13,560 lbs/14,750 lbs
What is the Max ambient air temperature for takeoff and landing?
ISA +35c
What is the Min ambient air temperature for takeoff and landing?
-40c
What is the Max altitude for a windmill start?
21,000 ft MSL
Max engine to engine N2 split at ground idle power?
2%
How much of the thrust is produced by core air?
Approximately 20%
How much thrust is produced by by-pass air?
Approximately 80%
How many stages of compression do we have?
The engine is equipped with a 10 stage axial flow compressor
What accessories are driven off the N2 accessory gear box?
Fish oil plus
engine driven Fuel pump IDG air turbine Starter engine driven Hydraulic pump OIL pump FADEC alternator
What is the engine bleed air used for?
Engine start, air conditioning, pressurization, wing and cowl anti-ice
What stages of bleed air are used?
Normally 6th.10th stage used when demand exceeds capability of 6th stage.
What allows 10th stage bleed air availability?
Air conditioning system controller (ACSC) automatically opens the high pressure valve (HPV).
How many igniters are installed on each engine?
Two, IGN-A and IGN-B
What are the required parameters before fuel is introduced during a ground engine start?
20% or greater N2
ITT
What is the air pressure requirement provided by the operating engine to initiate a cross-bleed start?
42 PSI to a maximum of 80% N2