What is the purpose of the propeller governor?

The propeller governor's primary function is to control the pitch of the propeller blades, making it a critical component in maintaining optimal performance for aircraft engines. By adjusting the angle of the blades, or the pitch, the governor can influence the propeller's thrust output. This adjustment allows for greater efficiency and performance during different flight phases, such as takeoff, cruise, and landing.

The ability to vary the pitch is essential for achieving the desired power settings and ensuring the engine operates within its optimal range, which can enhance overall aircraft performance and fuel efficiency. The propeller governor continuously monitors engine RPM and automatically makes adjustments to the blade pitch to keep the engine running at the specified speed, thereby contributing to effective power management.

While other answers may touch upon areas of engine function or performance, they do not encapsulate the primary purpose of the propeller governor, which is its pivotal role in controlling blade pitch. This aspect is central to maintaining efficient thrust and balancing engine loads throughout the various operational phases of flight.