Autonomous vehicles, like Dubai's 'hover taxi
', are sure to change the way we experience the world.
AIM 7-3-7, "WakeTurbulence," lays down some good words of warning: "In a slow hover taxi
or stationary hover near the surface, helicopter main rotor(s) generate downwash producing high velocity outwash vortices to a distance approximately three times the diameter of the rotor ...
Section 7 of the AIM offers guidelines for dealing with rotor wash: "Pilots of small aircraft should avoid operating within three rotor diameters of any helicopter in a slow hover taxi
or stationary hover." In other words, keep your distance.
He then decided to hover taxi
a few hundred yards to what he suddenly decided was a better spot and hit power lines on the way.