Aircraft Wake Turbulence (AC90-23f)

Every aircraft in flight generates a wake. Historically, when pilots encountered this wake the disturbance was attributed to “prop wash.” It is known, however, that this disturbance is caused by a pair of counter-rotating vortices trailing from the wing-tips. The vortices from large aircraft pose problems to encountering aircraft. For instance, the wake of these aircraft can impose rolling moments exceeding the control authority of the encountering aircraft. Further, turbulence generated wi...