AFOQT Practice Test

What is the function of the vertical axis in an aircraft?

1. Runs parallel to the wings at the center of the aircraft

2. Runs perpendicular to the wings at the center of the aircraft

3. Controls the pitch of the aircraft

4. Stabilizes the aircraft during roll

The correct answer is: Runs perpendicular to the wings at the center of the aircraft

The vertical axis in an aircraft is crucial for understanding how the aircraft maneuvers around its center of gravity. Specifically, this axis runs perpendicular to the wings at the center of the aircraft. This arrangement allows the aircraft to rotate around this axis, which is essential for controlling yaw. Yaw is the movement of the aircraft's nose left or right, and it is primarily controlled by the aircraft's rudder. When the aircraft turns, the rudder deflects and causes it to pivot around this vertical axis, facilitating coordinated turns and enhancing directional control. Understanding this axis and its relation to the aircraft's movement is fundamental for anyone learning about aviation and aircraft control. Therefore, recognizing its perpendicular orientation to the wings helps clarify how pilots achieve maneuverability in flight.