Aircraft flight control system including electromechanical actuator

An aircraft flight control system comprising:

• a first actuator;
• a horn arm that transmits an output of the first actuator to a control surface of an aircraft;
• and
• a second actuator that is a rotary actuator, wherein:
• a first end of the horn arm is coupled to a first output terminal of the first actuator;
• a second end of the horn arm is fixed to a second output terminal of the second actuator;
• and
• the second actuator is attached to the control surface such that a turning axis of the second output terminal is parallel to or coincides with a fulcrum axis of the control surface.

A system comprising:

• a first rotary actuator including a first output terminal;
• a second rotary actuator including a second output terminal;
• a horn arm that transmits an output of the first rotary actuator to a control surface, the horn arm including a first end that is coupled to the first output terminal, and a second end that is coupled to the second output terminal;
• a coupling arm that is fixed to the first output terminal;
• and
• an inter-arm that couples the coupling arm to the first end of the horn arm, wherein
• the second rotary actuator is attached to the control surface such that a turning axis of the second output terminal coincides with a fulcrum axis of the control surface.