Which component aids in moving the propeller to a low pitch, high RPM state?

The component that assists in moving the propeller to a low pitch, high RPM state is primarily the nitrogen charge. In certain propeller systems, such as those using a constant-speed propeller mechanism, a nitrogen charge is utilized to apply pressure and influence the pitch of the propeller blades. This helps the blades to move toward a position that allows for low pitch and high RPM operation, which is crucial for maximizing engine performance during takeoff and climb phases.

The nitrogen charge acts as a means of providing the necessary force to overcome the opposing pressures in the system, allowing for rapid adjustment of the blade angle. In situations requiring quick responses, such as a pilot demanding more power, the nitrogen helps maintain system efficiency by enabling fast blade adjustments.

Other components like oil pressure reduction, electric motor drive, or spring assistance might play roles in different contexts or systems, but they are not specifically responsible for achieving the low pitch, high RPM condition in the same way that a nitrogen charge functions in this particular application.