Engines Flashcards
Fly Good, Don't Suck
Engine Vibration Sources
Fan, LPT, N2, BB
X-BLD
Indicates airspeed lower than required for a windmilling start. Crossbleed is recommended for an in-flight start
Fuel Control Switch ON Function (Auto Start On)
Opens Spar Valve Opens Engine Fuel Valve EEC Sequences - Start Valve - Fuel Metering Valve - Igniters
Fuel Control Switch ON Function (Auto Start Off)
Opens Spar Valve
Opens Engine Fuel Valve
Energizes Igniters
Fuel Control Switch OFF Function
Closes Fuel Valves
Removes Igniter Power
Commands respective hydraulic demand pump to operate (Switch in Auto)
Unlocks Engine Fire Switch
Start Switch PULL (Auto Start On)
Opens Engine Bleed Valve
Arms Start Valve
Start Switch PULL (Auto Start Off)
Opens Engine Bleed Valve
Opens Start Valve
Start Switch releases at
50% N2
STBY Ignition
Backup AC power to selected igniters
CON IGNITION Switch
Selected Igniters Operate Continously
Commands Approach Idle Minimum
Auto Ignition Selector
EEC Alternates igniter 1/2 for each ground start
Auto Ignition Happens When:
During Start N2 below 50%
Trailing Edge Flaps not Up
NAI on
Engine Flameout
EEC Primary
Overspeed and N1 Protection
EEC Alternate
Overspeed Protection (No overboost protection)
Auto Start Monitors
N2 EGT
Auto Start Does Not Monitor
N1, Oil Pressure
Auto Start Protects Against
Hot Start
Hunt Start
No EGT Rise
Auto Relight Protection
EEC Detects engine flameout
N2 less than idle, or N2 rapid decrease
Engine Fuel System (After Spar Valve)
Stage 1 Fuel Pump Stage 2 Fuel Pump Oil/Fuel Heat Xchgr Fuel Filter / Bypass Fuel Metering Valve Engine Fuel Valve Fuel Flow
Engine Oil Purposes
Cool
Lubricate
Thrust Reversers are Operated By (GE)
Pneumatic Power
