Types Of Stall; Deep Stall; Full Stall - Swing ARCUS 2 RS Owner's Manual

case of extreme front stalls across the
entire wing chord, the wing tips may
move forward making the glider form a
U-shape. Again, recovery is by light
symmetrical braking on both sides, but
care must be taken that both wing
ends return to normal flight evenly.

Types of stall

When a paraglider flies through the air,
a laminar and turbulent boundary layer
is created. Extremely dangerous flight
configurations can result if the laminar
boundary layer is interrupted, with
practically the entire airflow along the
top surface braking away. This happens
in particular when the angle of attack
is too great.
There are three different types of stall
in paragliding.
WARNING
Full stall and spin are manoeuvres
which can be fatal if recovery is not
correct. These manoeuvres should
therefore be avoided. However, it is
important to learn how to recognise
the indications that a glider is about
to stall so that you can take
immediate action to prevent it.

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 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

With a full stall, the lift-generating
airflow over the glider breaks away
completely or nearly completely.
It is triggered when the 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.
If the canopy has gone back 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.
Recovery
Fully release the brakes within 3
seconds (count 21, 22, 23). If the brakes
Dangerous situations and extreme flying
WARNING
Section 07 31