Windtech serak - Manual (Page 7)

7
> certification
The SERAK is a paraglider of an intermediate level that has passed easily the tests of
the DHV level 1-2. This glider has successfully passed the DHV shock test with a weight
equal to the maximum total (all up) take-off weight. This means that the paraglider is
certified to resist to a load of 8 (eight) times the gravitational acceleration (8 G´s).
As regards the weight range of the glider, ALWAYS be certain that you are within the
correct weight range of the glider. To fly under, or over, weight can adversely affect the
stability of the SERAK & flown as such will no longer be a certified glider.
> best glide
Best glide in nil wind, and still air, is obtained at “trim” speed- that is brakes fully rele-
ased and no accelerator (speed bar) applied. It is always best to fly with a light pressure
on the brakes, keeping a “feel” on the wing in case of unexpected turbulence.
When flying into (against the) wind a better glide can be obtained by using the speed
system. The following is rough guide line as to how much to apply.
-With around 10 km/h of head wind, best glide is obtained with 25% accelerator applied.
-With around 15-25 km/h of head wind, best glide is obtained with 50% accelerator.
-With around +25 km/h of head wind, best glide is
obtained with 75-100% accelerator.
When flying downwind (wind from behind ) the best
glide is obtained between 0% brake and 10% of
brake.
The SERAK is a DHV 1-2 accelerated but using the
accelerator system close to the ground is not advisa-
ble & it should be released as soon as turbulent air
is encountered.
Note that the glide angle is not affected by the wing
loading, but that the security is.
Always fly a glider that is the correct size for you, and
remember that if your flying weight is below the sta-
ted minimum, the speed range will diminish and
inflation problems may appear. Also the handling will
degrade in turbulent conditions, and it will be easier
to sustain collapses. If your flying weight is above the
stipulated weight range, this will result in a higher
minimum speed and faster landing speed and the
stall speed of the glider will also be higher.