Which component of the landing gear allows for turning while on the ground?

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The component of the landing gear that allows for turning while on the ground is the rotating third wheel. This type of wheel is typically found on aircraft with a tricycle landing gear configuration, where one wheel is located at the nose and the other two at the main landing gear positions. The rotating third wheel can pivot, enabling the aircraft to maneuver and turn on the ground without requiring excessive banking or sideways motion from the main wheels. This feature is particularly beneficial for efficient taxiing and managing tight spaces on the ground, such as during taxiways or around the ramp.

In contrast, the main wheels primarily provide support for the aircraft during takeoff, landing, and rolling on the runway but do not have the same ability to pivot for steering. The trailing edge of the wings does not contribute to ground maneuvering in this context. Lastly, the fixed struts are part of the landing gear's structure and support but do not allow for steering capabilities. Thus, the rotating third wheel is specifically designed to facilitate ground handling and turning maneuvers for the aircraft.

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