In an autopilot system, which component directly actuates the control surfaces?

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Multiple Choice

In an autopilot system, which component directly actuates the control surfaces?

Explanation:
Direct actuation of the control surfaces is performed by servo actuators. Gyros provide the attitude and rate data the system uses to determine what movement is needed. The controller computes the required surface deflection from that data. The amplifier increases the power of the command signal so the actuator can move, and the servo converts that electrical signal into the actual mechanical motion that deflects the control surface.

Direct actuation of the control surfaces is performed by servo actuators. Gyros provide the attitude and rate data the system uses to determine what movement is needed. The controller computes the required surface deflection from that data. The amplifier increases the power of the command signal so the actuator can move, and the servo converts that electrical signal into the actual mechanical motion that deflects the control surface.

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