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BEHAVIOUR IN EXTREME MANOEUVRES
Lateral Asymmetric Closing (Closing):
Like any other canopy, a negative angle of attack will result in a closing. In
order to maintain directional control upon a lateral asymmetric closing, the
brakes must be applied on the open side.
In case of a major closing, the amount of braking must be well graduated,
in such way to avoid the airflow displacement (stall) on the open section of
the canopy.
To facilitate th e canopy re-inflation during a collapse, the steps above must
be followed in conjunction with a long and slow brake pumping action (2
seconds) with the toggle on the closed side. The shifting of weight on the
opposite side riser of the closing will also as
sist with the re -inflation and
increase safety, requiring less brake action and keeping away from the stall
point.
In case the pilot does not compensate with the brakes, the
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in
most situations will inflate by itself even in major asymmetric collapses. The
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can make a complete revolution and in the event it does not
open on its own, without action, the paraglider will begin a positive spiral.
The pilot must lightly apply the brake on the external side to stop a spiral
and at the same time shift his/her weight on the same side until the canopy
is stabilized. Exactly at this stage of pendulum effect under the canopy, it is
important that the pilot controls carefully the amount of force applied on
the brakes, and often it is needed to decrease the force. Once a straight
flight is achieved, the closed side can be re-inflated by the pumping action.
Full Stoll:
To create a ‘Full Stall’, the pilot must pull both brakes to the end, and hold
them tightly in this position.
Warning:
Extreme maneuvers must be executed under the supervision of a
qualified instructor, on safe courses and with the entire infrastructure
available for above ground and water flying!
Warning:
If the pilot does not actively terminate the spiral, it will continue all the
way to the ground!
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Warning:
A turn with an incline beyond 60º is considered acrobatic.
In this situation, the
flies in most times on reverse, in a
forward horseshoe shaped tie.
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The canopy must be stabilized before
the procedure for normal flight re-entry is initiated. Any attempt of
recover during the beginning stages of a stall, when the paraglider
reverses suddenly can result in a sudden push forward of the canopy.
When recovering from a 'Full Stoll', both brakes must be released slowly
simultaneously and symmetrically (> = 1 second). The
will
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move forward gradually and begin normal flying.
An asymmetric recovery (releasing one brake before the other) of a 'Full
Stoll' is utilized only by test pilots to simulate a paraglider being expelled
out of a thermal and must not be attempted by pilots!
Negative Turns:
To induce a fast Negative Turn (DHV) or starting from the minimum speed
(AFNOR), the pilot must pull tightly and quickly one toggle right to the end
of it. During the negative spiral, the canopy rotates relatively fast around
its center, with its inner side flying backwards.
When entering an unintentional Negative Turn, the pilot must recover as
soon as it is noticed by releasing the brake slightly so that the canopy wil
accelerate and returns to a stable flight, without loosing too much altitude.
When a negative turn is intentionally prolonged, the
accelerates forward asymmetrically. A frontal asymmetric closing should
not be under-estimated. To recover from an intentional negative spiral, the
pilot must release the pulled brake and pay close attention to a strong
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canopy surge ahead.
Wingover:
In order to perform a 'Wingover' the pilot must generate a strong pendulum
effect by alternating turns on both sides. A complete closing of the canopy
is possible.