Which axis of flight extends from wingtip to wingtip?

The axis of flight that extends from wingtip to wingtip is known as the lateral axis. This axis runs horizontally across the aircraft, perpendicular to both the longitudinal axis (which runs from the nose to the tail) and the vertical axis (which runs vertically through the aircraft).

The lateral axis plays a crucial role in the aircraft’s performance, particularly regarding its pitch control. Movements about the lateral axis are primarily controlled by the aircraft's elevators, which allow the pilot to make adjustments to the aircraft's nose position, thereby controlling ascent or descent during flight.

In summary, the lateral axis is essential for understanding how an aircraft maneuvers about its horizontal plane, making it fundamental knowledge for anyone studying aircraft operations and control.