| 摘要 |
PURPOSE:To ensure the required minimum of driving output even at the time of a trouble in a hydraulic power source or the like by using a motor-operated actuator as a reaction link, and controlling the actuator according to a signal from a trimming signal generator. CONSTITUTION:A reaction link 8 and a motor-operated actuator 9 are connected to a hydraulic servo actuator 5, and the motor-operated actuator 9 is controlled according to a signal from a trimming signal generator 2. Thus, trimming operation can be performed regardless of a trouble in a hydraulic power source or the hydraulic servo actuator 5 to ensure the required minimum of driving output for steering an aircraft.
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