Dudek Nucleon WRC, User Manual

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sink rate (up to 5 m/s). You can steer the wing pretty efficiently by weight-
shifting. After releasing lines, the paraglider will usually open up on its own
or you can assist it with a long stroke of the brakes. For the sake of safety
(the possibility of a parachutal stall) it is reasonable to engage speed system
after pulling big ears in order to lessen the angle of attack of the wing centre.
Executing big ears with opened trimmers is very difficult due to reflex profile
stabilisation.
CAUTION: See the PARACHUTAL STALL chapter.
Never try to pull big ears during powered climb, as the increased drag
can lead to increase of the angle of attack and a parachutal stall.
Besides, pulling the ears while climbing is pointless anyway.
3.4.2 SPIRAL DIVE
Nucleon is a very agile paraglider, so entering spiral dive happens very
quickly and can be surprising for the less experienced pilot. A spiral dive is
characterised by reaching the highest sink rates possible. Significant G-
forces, however, make it difficult to sustain a spiral dive for long, as will place
high loads on both pilot and glider to degree of losing consciousness by the
pilot. Never do this manoeuvre in turbulence or at too high bank angles.
Control the dive and do not exceed 16 m/s sink. If the dive is not stopping
after releasing the brake,assist the glider with the outer one.
NEVER DO BIG EARS IN A SPIRAL! In this manoeuvre smaller number
of lines is carrying an excessive load mulitplied by the centrifugal
force, what can lead to damage of the lines or even the paraglider itself
(load of a single line can be much higher than passed in certification
trials (i.e. 8 G).
3.4.3 B-STALL
Executing a B-stall on a Nucleon is very hard due to specific
suspension lines location in stabilizers area. B-stall can be executed
only with fully closed trimmers (i.e. pos. ‘6’ - red area).
To enter a B-stall, simultaneously pull down both B-risers (red tape) by 10 –
15 cm. The canopy will collapse across the entire span along its B-row, the
airflow over top surface will break and canopy surface will be decreased.
Forward movement will be almost completely stopped. Further pulling B-
risers is not advised, as tests have shown it to increase wing instability. If the
canopy forms a horseshoe with both wingtips in front of the pilot, gently
apply both brakes to recover.
To exit a B-stall, the risers should be released in a smooth and decisive
manner. On quick and symmetrical releasing B-lines the airflow will be
reinstated and the wing will surge forward, returning to normal flight. In
contrast to standard paragliders, in case of Nucleon there is no need to
counter this surge with brakes - yet another asset of the reflex profile!
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USER MANUAL