What is the main purpose of the hydraulic system in an aircraft?

The primary purpose of the hydraulic system in an aircraft is to actuate control surfaces and landing gear. Hydraulic systems are essential in delivering the necessary force to operate various mechanical components in an aircraft efficiently. For instance, the ailerons, elevators, and rudders that control the aircraft's flight path rely on hydraulic actuators for precise movement. Additionally, the landing gear system, which needs to extend and retract safely and reliably during takeoff and landing, is also controlled by hydraulics.

The hydraulic fluid in these systems enables the transmission of force through pipes and actuators, allowing for the smooth and effective operation of critical flight components. This reliance on hydraulics is due to their ability to generate high force with relative ease and minimal weight compared to mechanical systems. Thus, the function of a hydraulic system is crucial for maintaining control and safety during flight operations.