Correct Answer - Option 4 : Z-axes
Concepts:
Air plane motion is a 3 D motion which is controlled by three motions- Rolls, Pitch and Yaw.
Three lines are imagined running through an airplane and intersecting at right angles at the airplane’s center of gravity. These three line control the airplane motion. These are explained below:
1. Rolls: Rotation around the front-to-back axis is called roll. The motion is around the longitudinal axis (analogues to X axis). The longitudinal axis extends from the nose to the tail of the aircraft. Imagine a line going through the airplane along its length and wings of plane roll or rock from one side to the other.
2. Pitch: Rotation around the side-to-side axis is called pitch. It rotates around the lateral axis (analogues to Y axis). Due to this, nose of aircraft moves up or down.
3. Yaw: Rotation around the vertical axis is called yaw. It rotates around that vertical axis (analogues to Z axis). Imagine a line going to run vertically through the top and the bottom of the cabin of the aircraft, through that center of gravity and it would cause the aircraft to yaw along the vertical axis.
