Engine Flashcards
0
Q
Engine oil pressure operating range
A
25-95 psi
1
Q
Eng FADEC
A
Ess power below 50% n2
PMA power above 50% n2
1 FADEC per engine
2channels per FADEC
2
Q
When is flex prohibited?
A
Contaminated runway
Low level windshear
3
Q
What is flex?
A
Reduced thrust take off based on assumed temp.
Telling the FADEC that is warmer than it actually is
4
Q
Engine stable condition
A
N1. 25%. 2-4-6-5&1/2 ITT. 450 N2. 60% Fuel flow. 500 lbs an hr Oil press. > 25 psi
5
Q
Engine start sequence
A
Select start N2 rotation 7% N2 - ignition 20% N2 - fuel flow( below 120 ITT ) 50% N2 - ignition off and starter cutout Oil pressure in the green
6
Q
Describe the engine
A
GE CF34-8E5 High bypass dual rotor turbofan 10 stage variable geometry compressor 2 stage high pressure turbine 1 stage Fan 4 stage low pressure turbine Max thrust 14,200
7
Q
Max ITT for engine start
A
815 ITT