What is the primary function of the Ng governor?

The primary function of the Ng governor is to manage engine speed. In turbine engines, Ng refers to the speed of the gas generator section, which is crucial for maintaining optimal engine performance. The Ng governor automatically adjusts fuel flow to ensure that the engine operates at the desired speed, enhancing efficiency and preventing overspeed conditions. This function is vital for safety and effective operation, especially in various flight conditions where power settings may change.

While controlling fuel flow is related to the engine management, it is the Ng governor's primary role to specifically maintain and regulate the engine's rotational speed, ensuring the overall stability and performance of the aircraft engine. The other options do not pertain to the main responsibilities of the Ng governor, as cabin pressure regulation and temperature monitoring are functions managed by separate systems within the aircraft.