In a flight control system, to what does a servo actuator apply movement?

In a flight control system, to what does a servo actuator apply movement?

• A. Converts electrical signals to mechanical motion to move control surfaces.
• B. Stores hydraulic fluid.
• C. Measures airspeed.
• D. Provides fuel to the engine.

Answer: (A)

Servo actuation is about turning the flight control command into physical movement of the surfaces. The servo actuator takes electrical control signals from the flight control system and converts them into mechanical motion that deflects the control surfaces (such as the ailerons, elevator, or rudder). This is the means by which a commanded attitude or surface position is achieved, even though the actuation itself may be hydraulic or electric. The other functions—storing hydraulic fluid, measuring airspeed, or delivering fuel—belong to different subsystems and do not describe what a servo actuator does.

Servo actuation is about turning the flight control command into physical movement of the surfaces. The servo actuator takes electrical control signals from the flight control system and converts them into mechanical motion that deflects the control surfaces (such as the ailerons, elevator, or rudder). This is the means by which a commanded attitude or surface position is achieved, even though the actuation itself may be hydraulic or electric. The other functions—storing hydraulic fluid, measuring airspeed, or delivering fuel—belong to different subsystems and do not describe what a servo actuator does.