Swing Powerplay Scorpio, Руководство пользователя

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40 Section 7 Dangerous situations and extreme flying
Deep stall
Paragliders can go into a deep stall for a
variety of reasons: brake lines too short (no
slack), old or damaged glider material which
therefore has increased level of
permeability, altered trim/line length and
changes to profile characteristics caused by
moisture (e.g. flying in rain). Paragliders
have a particular tendency to stall if the
wing-loading is too low.
In a deep stall, the airflow from the front
reduces and the glider goes into a stable
flight attitude without any forward
momentum. The paraglider sinks almost
vertically at 4-5m/s and there is noticeably
less flight noise.
Recovery
Remain in an upright position and push the
A- and B-risers in the direction you are
flying, so as to shorten them by 5-10cm.
If you have a speed system, you can also
use it to accelerate, so that the glider goes
into a normal flying position from the deep
stall.
After you have landed, the glider and the
length of the lines must be checked.
Full stall
In a full stall, there is complete or nearly
complete disruption to airflow around the
wing. It is triggered when the glider’s
maximum possible angle of attack is
exceeded. The most common cause is
going below the minimum speed or flying
near the minimum speed combined with the
effects of turbulence.
In full stall, the paraglider loses its forwards
travel, surges backwards and deflates. If the
brakes are held down, the canopy comes up
over the pilot again. The result is an almost
vertical descent with a sink rate of approx.
8m/s.
Recovery
Fully release the brakes within 3 seconds
(count 21, 22, 23). If the brakes are
released too slowly, the paraglider may
spin. The spin stops automatically when the
brakes are released completely.
WARNING
If the canopy has gone backwards
during the full stall, the brakes must be
held down, otherwise the canopy may
surge forward and, in an extreme case,
end up underneath the pilot. Hold the
brakes down until the canopy is above
you again.
Spin
The spin is a stable flight attitude, in which
one side of the canopy stalls, while the other
side continues to fly forward. The glider
turns around the stalled side of the wing.
Recovery
To recover from the spin, the pilot must
quickly release the brakes. The stalled side
of the wing will then speed up again.
Depending on recovery and the dynamic of
the circular motion, one side of the canopy
may shoot forwards and suffer an
asymmetric collapse.
If the pilot suspects that the glider has
unintentionally been put into a spin, the
brake which has been pulled down too far
must be released immediately.