Ultra Wing Extra contrary
to Ultra Wing Basic
possesses passive robust
speed adaptation of area
of low pressure. Active
method would have slider
to adjust size of floor of
the wing to the particular
speed, but this blades
with variable slope
angles doing the same
thing equally, even better
because air streams
have different speeds
and the poriferous floor
handles all multispeed
air streams evenly.
It is 3D: click it with
mice to rotate and
roll the middle button
to zoom, press it to
move around.