Constant-speed, non-feathering McCauley, Hartzell, and other propellers of similar design without counterweights increase pitch angle using what mechanism?

Constant-speed non-feathering propellers increase pitch angle using a governor mechanism to maintain a constant rotational speed and adapt to changes in engine power.

Explanation:

Constant-speed non-feathering propellers such as those by McCauley, Hartzell, and other similar designs without counterweights increase pitch angle using a mechanism called the propeller governor. The propeller governor is responsible for adjusting the pitch angle of the propeller blades to maintain a constant rotational speed.

When the engine generates more power, the governor increases the pitch angle by shifting the control lever, which adjusts the pitch of the propeller blades. This increases the load on the engine, preventing it from overspeeding. Conversely, when the engine generates less power, the governor decreases the pitch angle, reducing the load on the engine.

This mechanism allows the propeller to maintain a constant speed while adapting to changes in engine power, ensuring efficient operation and optimal performance.

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