Which component provides nosewheel steering in an aircraft?

The component responsible for providing nosewheel steering in an aircraft is the steering tiller. This device allows pilots to control the direction of the aircraft while taxiing on the ground. The steering tiller is typically located on the captain's side of the cockpit and provides a more precise control than using the rudder pedals alone, which are primarily used for controlling the aircraft's yaw and stabilizing its flight, rather than for taxiing.

Using a steering tiller allows for sharper turns and easier maneuvering on the ground, especially in tight spaces such as taxiways and ramps. This distinction is important because other components, such as the rudder pedals, primarily function to control the aircraft in flight rather than assisting with ground control. The throttle control manages engine power and speed, while the yaw damper is involved in maintaining stable flight by preventing unwanted yaw movements. Hence, the steering tiller is the specific control mechanism utilized for nosewheel steering, making it the correct choice.