Propeller

Question 1

Material / shape?

Answer 1

3-blade wooden

Question 2

How is the prop pitch set?

Answer 2

By ECU via electro-mechanical actuator on the governor

Question 3

How is the governor operated?

Answer 3

Gearbox oil
Oil pressure up = pitch down = RPM up
Oil pressure down = pitch up = RPM down

Question 4

How is the prop feathered?

Answer 4

Eng master off if rpm > 1300
Prop pitch remains above high pitch lock if rpm <1300
Feathers when gear oil pressure is lost

Question 5

How is the prop unfeathered?

Answer 5

Oil pressure from accumulator when eng master on