Slip (aerodynamics)

"Sideslip" redirects here. For the automotive handling term, see slip angle. For the jazz-playing technique, see outside (jazz).
Aircraft sideslip angle

A slip is an aerodynamic state where an aircraft is moving somewhat sideways as well as forward relative to the oncoming airflow or relative wind. In other words, for a conventional aircraft, the nose will be pointing in the opposite direction to the bank of the wing(s). The aircraft is not in coordinated flight and therefore is flying inefficiently.