Final answer:
Leading-edge devices are high-lift devices in the category of aircraft control surfaces, managed by a fly-by-wire system.
Step-by-step explanation:
Leading-edge devices are categorized under high-lift devices in aircraft control surfaces. These devices are an integral component of an aircraft's wing structure and are primarily used to increase the lift generated by the wing at lower speeds, such as during takeoff and landing phases.
Leading-edge devices, which can include slats, slots, and leading-edge flaps, function by altering the airflow over the wing to maintain lift at higher angles of attack and prevent stalling. Such modifications to control surfaces are typically managed by an aircraft's fly-by-wire system.
Where pilot inputs are converted into electrical signals that control actuators to move these surfaces precisely and safely. These leading-edge devices are important for ensuring safe and efficient flight during different phases of operation and play a crucial role in controlling an aircraft's lift and maneuverability.