How do hydraulic systems use pumps in aircraft landing gear and brakes?

In modern aircraft, hydraulic systems utilize hydraulic power—the circulation of pressurized fluid—to perform mechanical work with high precision and flexibility.1

The Role of Pumps and Motors

Hydraulic systems rely on pumps to pressurize fluid, which is then transmitted through piping to actuate various components. In aircraft, this pressurized fluid is directed to linear motors (hydraulic cylinders), which convert the fluid's energy into straight-line motion. These actuators are essential for operating control surfaces and landing gear.21

Application in Brakes

Aircraft braking systems utilize hydraulic pressure to force friction elements against a rotating surface, such as a disc. When the pilot engages the brakes, the system directs pressurized fluid to wheel cylinders or calipers. This pressure forces pistons to push friction pads against the brake disc, converting the aircraft's kinetic energy into heat to slow or stop the motion. Because hydraulic systems allow for rapid, accurate, and powerful responses, they are ideal for the demanding requirements of aircraft landing and ground maneuvering.341