Propeller Flashcards
1
Q
Material / shape?
A
3-blade wooden
2
Q
How is the prop pitch set?
A
By ECU via electro-mechanical actuator on the governor
3
Q
How is the governor operated?
A
Gearbox oil
Oil pressure up = pitch down = RPM up
Oil pressure down = pitch up = RPM down
4
Q
How is the prop feathered?
A
Eng master off if rpm > 1300
Prop pitch remains above high pitch lock if rpm <1300
Feathers when gear oil pressure is lost
5
Q
How is the prop unfeathered?
A
Oil pressure from accumulator when eng master on
