Longitudinal Axis

In space and astronautical engineering, the longitudinal axis is an imaginary line that runs through the center of mass of a spacecraft or aircraft from the nose to the tail. It is one of the three primary axes used to describe the orientation and movement of a vehicle in three-dimensional space, the other two being the lateral axis and the vertical axis. The longitudinal axis is also known as the roll axis, as it is the axis around which a vehicle rolls or banks during flight. The longitudinal stability of a spacecraft or aircraft is an important factor in its design, as it determines how well it can maintain a stable flight path and resist disturbances such as turbulence or gusts of wind.
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