Along which axis is the center of gravity of an aircraft computed?

• A. Vertical axis
• B. Transverse axis
• C. Longitudinal axis
• D. Horizontal axis

Answer: (C)

The center of gravity (CG) of an aircraft is primarily computed along the longitudinal axis. This axis runs from the nose of the aircraft to the tail and is crucial for determining the aircraft's balance and stability in flight. The location of the CG affects the aircraft's pitch and overall aerodynamic performance.

When an aircraft is designed and operated, understanding the CG's position along the longitudinal axis helps in ensuring that the aircraft maintains controlled flight and can perform maneuvers effectively. If the CG is located too far forward or too far aft along this axis, it can lead to handling issues, increased drag, or even stall conditions.

The vertical and transverse axes relate to the aircraft’s yaw and roll stability, respectively, but they do not play a direct role in calculating the CG. The horizontal axis, while important for understanding the aircraft's climb and descent dynamics, is also not directly relevant to the computation of the CG in the context of stability and control along the specific longitudinal direction.