Which of the following components relies on hydraulic systems for operation?

The operation of flaps on an aircraft like the Dassault Falcon 7X relies on hydraulic systems. Flaps are aerodynamic surfaces located on the wings that extend and retract to modify the wing's shape and increase lift during takeoff and landing. Hydraulic systems are particularly suitable for controlling flaps because they can provide the necessary force and precision to ensure smooth and responsive operation.

Using hydraulic systems minimizes weight, as hydraulic actuators can be more compact than mechanical systems. The hydraulic system allows for quick adjustments during critical flight phases, enhancing performance and safety. Conversely, while other components like the fuselage and winglets play essential roles in aircraft structure and aerodynamics, they do not require hydraulic systems for their basic functions. Cockpit controls, although they can sometimes be hydraulic, are often mechanical or electronic in modern aircraft, making the flaps the primary components that rely specifically on hydraulic operation in this context.