Flying with a wet paraglider ( risk of deep stall )
Flying with a wet glider creates a risk of deep stall. Deep stall is often
the result of a combination of factors. The weight of the wet canopy
goes up, and this increased weight increases the angle of attack,
which always puts the glider nearer the deep stall limit. Added to this,
water drops on the top surface have a detrimental effect on the laminar
flow of the boundary layer near the leading edge, which distinctly re-
duces the maximum lift coefficient. If the wet glider is also being flown
at its lower weight limit there is a further small effect of increasing the
angle of attack, as well as there being a lower airspeed because of the
reduced wing loading.
In order to avoid the risk of deep stall with a wet glider, the wing should
be braked as little as possible, and big ears not used at all. As a further
preventative measure apply moderate ( 25-40% ) speed bar. These
actions have a small effect in reducing the angle of attack. If the wet
glider does go into deep stall you should recover by using the speed
bar only. See also section «Deep stall».
Winching
The EPSILON 8 is suitable for winch launching. When taking off in
windless conditions, ensure that the paraglider is laid out in banana or
even wedge shape to make sure the centre inflates before the wingtips
( avoid risk of rosetting ).
Winch launch is only permitted if:
§
the pilot has completed a tow training course (only Germany/DHV);
§
the winch system is certified for use with paragliders;
§
the winch operator has been fully trained in how to winch
paragliders.
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Summary of Contents for EPSILON 8 23
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Page 38: ...Wing parts Winglet Upper surface Cleaning Velcro Ribs Lower surface Air intakes Cells 38...
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