Advance acoustic IOTA2 Manual page 22

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 IOTA 2 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 IOTA 2 only comes out of a spiral dive by itself if
the pilot is in a neutral sitting position . From a steep spiral with a
high sink rate – more than 14 m/s – recovery requires active out-
side 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 IOTA 2 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 ( carabi-
ners ) may drastically 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 .
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