Advance acoustic XI 21, Руководство пользователя

Страница: 23 / 46

Spiral dive
For the most comfortable way of doing this we recommend a neutral
sitting position without active weight shift, and a shoulder-width cara-
biner distance ( approx 45 cm ).
Enter the spiral by progressively pulling one brake. Your head and field
of view should be directed in the turn direction. As the angle of bank in-
creases so will the rate of turn and centrifugal force.
The behaviour of the spiralling paraglider can be separated into two
phases: in the beginning the glider begins with a normal turn which
progressively tightens, with increasing angle of bank. In the second
phase the paraglider engages its spiral mode. This means that the
wing dives forward with an increase of acceleration. During this phase
of the manoeuvre try to keep a neutral sitting position and give way to
the centrifugal force – your body will be pushed to the outside.
Recovery from the manoeuvre is achieved by progressively releas-
ing the inside brake. The body weight should be slightly displaced to
the outside of the turn. While coming out of a spiral dive with high ver-
tical and rotational speeds it is essential to release the brake careful-
ly, and/or reapply a little inside brake if necessary, so that you can pre-
vent the wing pitching back excessively, and then diving in front. Make
sure that you start the recovery with plenty of height remaining above
the ground. Generally speaking you should allow the same amount of
time to recover as it took to enter the manoeuvre, but remember that
the sink rate will be higher.
The XI is a very agile and precise wing; this means that it goes into a
spiral easily and quickly, and a very high descent speed ( more than 14
m/s ) can result - easily and quickly..
Caution: the XI only comes out of a spiral dive by itself if the pi-
lot is in a neutral sitting position. From a steep spiral with a high
sink rate – more than 14 m/s – recovery requires active outside
brake with weight shift to the outside at the same time.
Caution: weight shifting to the inside of the turn results in in-
creased acceleration and stable continued rotation. In this case,
active counter-braking with simultaneous weight transfer to the
outside of the turn is required to end the manoeuvre ( push your
body outwards ).
Caution: the XI is approved for harnesses in group GH ( without
rigid cross-bracing ). Harnesses in group GX ( with cross-bracing )
or those with very low suspension points ( carabiners ) may dras-
tically change the flying characteristics in a spiral.
Caution: do not fly spiral dives or aggressive changes of di-
rection with big ears applied: the raised wing loading carried by
fewer lines can damage the glide.
23