Advance acoustic SIGMA 10 Memulai - Halaman 14

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Wet Paraglider
If you fly a wet paraglider the risk of para­
chutal stall is heightened. Parachutal stall is
often the result of a combination of factors.
Water increases the weight of a wet cano­
py. More weight results in an increased
angle of attack, which brings the glider
closer to the parachutal stall boundary.
In addition, water drops on the fabric have a
bad effect on the laminar flow over the
leading edge, and this significantly reduces
the maximum achievable lift coefficient.
To minimise the risk of parachutal stall a
wet glider should be braked as little as
possible, and big ears never used. But, if
the wing still goes into parachutal stall,
recovery should be achieved by accelerat­
ing using the speed system only.