What is the function of the rudder on an aircraft?

The rudder on an aircraft plays a crucial role in controlling yaw, which refers to the side-to-side movement of the aircraft's nose. When a pilot wants to change the aircraft's direction, the rudder is used to direct the airflow over the tail section, creating a yawing motion that moves the nose left or right. This is essential for navigating and maneuvering, especially during turns or when making adjustments to maintain a coordinated flight path.

The design and operation of the rudder allow it to work in conjunction with the ailerons and elevators, ensuring that the aircraft can be controlled effectively in all three axes of motion. While pitch is regulated by the elevators, roll is managed by the ailerons, and the rudder's specific function of controlling yaw is vital for maintaining stable and safe flight.