What provides a maximum steering angle of 6 degrees in an A320?

The steering hand wheel is designed to allow pilots to control the nose wheel steering during ground operations, and it provides a maximum steering angle of 6 degrees in the A320. When the hand wheel is turned, it directly affects the angle at which the nose wheel pivots, enabling the aircraft to maneuver while taxiing. This design ensures that the pilot has precise control over the aircraft's movement on the ground, which is particularly important during taxiing and turnarounds at the airport.

The other components mentioned, such as the rudder pedals and main gear wheels, do not directly control the steering angle in the same manner. The rudder pedals are primarily used for controlling the yaw of the aircraft in flight and for differential braking on the ground, while the main gear wheels are fixed and do not contribute to steering. Additionally, the landing gear lever is used to extend and retract the landing gear but does not provide any steering function. Thus, the steering hand wheel is specifically designed for ground maneuverability with the defined maximum steering angle.