Propeller

Question 1

Propeller Type

Answer 1

Constant-Speed, Full Feathering, Reversing, Counter-weighted, Hydraulically Actuated

Question 2

If the primary prop governor fails will the fuel topping governor be operational

Answer 2

No, the FTG utilizes the same flyweights and pilot valve mechanism of the primary governor

Question 3

What happens in an Overspeed condition

Answer 3

The governor flyweight force, exceeds the speeder spring force. This RAISES the pilot valve, and REDUCES oil pressure at the propellor piston. INCREASING blade angle, therefor decelerating the prop RPM

Question 4

What happens in an Underspeed Condition

Answer 4

When the propellor decelerates below selected RPM, the speeder spring overcomes the force of the flyweights. This moves the pilot valve DOWN, and allows the governor pump to INCREASE pressure to the propellor servo piston. This results in a DECREASE of blade angle, therefore increasing prop rpm