What is the significance of the governor in the operation of the TH-73A?

• A. It controls the fuel flow to the engine
• B. It maintains the rotor speed within a prescribed range
• C. It regulates airspeed during takeoff
• D. It manages cabin temperature

Answer: (B)

The significance of the governor in the operation of the TH-73A lies in its crucial role in maintaining rotor speed within a prescribed range. In rotorcraft operation, maintaining consistent rotor speed is vital for flight stability and safety. The governor continuously monitors the rotor speed and makes real-time adjustments to the throttle position as necessary to ensure that this speed remains within optimal limits, even during changes in flight conditions such as load or altitude.

If the rotor speed deviates from the desired range, the governor acts to correct this by either increasing or decreasing engine power, allowing for smooth transitions and better handling characteristics. This functionality is particularly important during critical phases of flight, such as takeoff and landing, where precise rotor control can significantly influence performance and pilot workload.