Introduction to Actuator An actuator is a component of a hydraulic system that is responsible for moving and controlling a mechanism of piston rod and the piston rod is connected to the aircraft systems. An actuating cylinder transforms energy in the form of fluid pressure into mechanical force. It is used to impart powered linear motion to some movable object or mechanism. A typical actuating cylinder consists of a cylinder housing, one or more pistons and piston rods, and some seals. The piston inside the cylinder moves forward and backward and an attached piston rod moves into and out of the cylinder housing in accordance with piston. Seals are use to prevent the flow or leakage of...