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| Airbus.com |
Wake turbulence is turbulence that forms behind an aircraft as it passes through the air. Wingtip vortices occur when a wing is generating
lift. Wake turbulence exists in the vortex flow behind the wing. The strength
of wingtip vortices is determined primarily by the weight and airspeed of the
aircraft.Wingtip vortices make up the primary and most dangerous component of
wake turbulence. This is the reason the separation criteria had to be written
out for A380.
The FAA provides for SUPER category for A380 in wake turbulence category.
FAA included the expression “SUPER”
immediately after the aircraft call sign in communications
with a terminal facility about A380 operations, and when issuing traffic
advisories regarding an A380.
Common separation minima promulgated
to counter wake turbulence from SUPER are:
Take-off
An aircraft of a lower wake
vortex category must not be allowed to take off less than two minutes behind an
aircraft of a higher wake vortex category. If the following aircraft does not
start its take off roll from the same point as the preceding aircraft, this is
increased to three minutes.
Landing
Preceding
aircraft
|
Following
aircraft
|
Minimum
radar separation
|
Super
|
Super
|
4 NM
|
Heavy
|
6 NM
|
|
Large
|
7 NM
|
|
Small
|
8 NM
|
|
Heavy
|
Heavy
|
4 NM
|
Large
|
5 NM
|
|
Small
|
5 NM
|
|
Large
|
Small
|
4 NM
|
SUPER is currently being
reserved exclusively for A380 and we hope more aircraft types join this
category!!!!!!
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