In a constant-speed propeller governor, what do the governor flyweights actuate?

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Study for the Aviation Institute of Maintenance Block 16 Exam. Enhance your knowledge with flashcards and multiple choice questions with hints and explanations. Achieve exam readiness and boost your chances of success!

Multiple Choice

In a constant-speed propeller governor, what do the governor flyweights actuate?

Explanation:
In a constant-speed propeller governor, the flyweights sense propeller speed and their outward movement actuates a pilot valve. This pilot valve controls the hydraulic oil flow to the propeller’s pitch-change actuator, adjusting blade angle to keep RPM at the set value. The other components listed aren’t directly operated by the governor’s flyweights: the camshaft and pushrod belong to the engine’s valvetrain, and the fuel metering unit is part of the engine fuel system. So the function of the flyweights is to move the pilot valve, which in turn governs propeller pitch.

In a constant-speed propeller governor, the flyweights sense propeller speed and their outward movement actuates a pilot valve. This pilot valve controls the hydraulic oil flow to the propeller’s pitch-change actuator, adjusting blade angle to keep RPM at the set value. The other components listed aren’t directly operated by the governor’s flyweights: the camshaft and pushrod belong to the engine’s valvetrain, and the fuel metering unit is part of the engine fuel system. So the function of the flyweights is to move the pilot valve, which in turn governs propeller pitch.

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