Aerial Engineer Practice Test

The rudder is a critical flight control surface located on the vertical stabilizer of an aircraft. Its primary function is to control the yaw of the aircraft, which is the left or right movement around the vertical axis. When the pilot moves the rudder, it creates a differential in airflow on either side of the tail, allowing the aircraft to rotate around its vertical axis. This capability is essential for maintaining directional control, especially during takeoff, landing, and coordinated turns.

Understanding this function is vital for effective aircraft maneuvering and stability. The rudder works in conjunction with ailerons and elevators, which handle roll and pitch control respectively, ensuring well-rounded maneuverability during flight. Other options, such as controlling pitch or adjusting altitude, do not pertain to the rudder's design and intended purpose, making it clear that controlling the yaw is its exclusive function.