Fill in the missing words in regards to wake turbulence. Vortices are mainly generated by the _____ and the vortices tend to move _____ from the aircraft.
Refer to figures.
WAKE TURBULENCE
Whenever an airplane generates lift, air spills over the wing tips from the high pressure areas below the wings to the low pressure areas above them. This flow causes rapidly rotating whirlpools of air called wingtip vortices. An aircraft generates vortices from the moment it rotates on take-off to touchdown.
The intensity depends on aircraft weight, speed and configuration. The greatest wake turbulence danger is produced by large, heavy airplanes operating at low speeds, high angles of attack and in a clean configuration.
In regards to this question:
1. The formation of the vortex - outward along the span under the wing, then upwards around the wingtip towards the lower pressure above the wing.
2. The path of the vortices once formed - outwards and downwards from the wing tips, descending typically 1000 ft over 3 minutes before dissipating.
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