What is the purpose of the CPP hydraulic oil power system?

Correct Answer: Option D — Supplies high pressure oil for blade actuation and control oil for propeller pitch control.

CPP hydraulic systems require high-pressure oil to overcome the significant hydrodynamic forces acting on the blades during pitch changes. Simultaneously, the system utilizes lower-pressure control oil to operate the pilot valves and feedback mechanisms that precisely regulate the pitch position commanded by the bridge or engine room.