MAC PARA ARAVIS Series, User Manual

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19
Asymmetric collapse
Use active flying techniques to virtually eliminate collapses in normal flying conditions.
Nevertheless, if you do get a collapse, stabilize your weight in your harness and do not
allow yourself to fall to the collapsed side.
Basically when asymmetric collapse is induced the Aravis will re-open spontaneously from
closures of up to 70% with a change of direction from 180° of up to 360°. The time this
takes, and the associated height loss, can however be noticeably reduced by appropriate
action by the pilot. Control your course with weight-shift and a little outside brake. The
deflation should re-inflate spontaneously.
If you react immediately, 30% brake on the open side should suffice to hold the canopy on
a straight course. In the event of a big collapse, this braking should be applied very
carefully to avoid stalling the remaining inflated wing. The pilot’s correction for direction can
be aided by a pumping out the deflation; a slow, long pumping action of the brake of the
deflated side of the wing helps the canopy to re-inflate. If the glider does not self-recover
and the pilot does not correct the canopy can enter a stable spiral dive!
Attention!! The Aravis is a paraglider with shark nose aerofoils and with more backwards
positioned A-suspension points. These aerofoils and position of A-suspension points give
more inherent stability and offers more resistance against collapses. It wasn`t necessary to
feature the Aravis with special folding lines to perform the manoeuver. But nevertheless the
accelerated asymmetric collapse must be performed correctly in a proper way and this
preferably by safety trainings.
It is important to take the outermost A1-riser together with A-main riser firmly in one hand.
At the beginning of pulling the move (in the direction of pilot`s body) must be slow and after
the move of approx. 5cm, it can only be strongly pulled down. In case the A1-riser is not
properly held along with the main A-riser, it may happen that the wing tip opens faster. The
opening is then distinctive with the risk of a cravat.
“Cravat” / Line-over
A cravat occurs when a wing tip becomes stuck between the glider lines, for example,
following a bad take-off preparation. On the Aravis a cravat is unlikely to occur. If you do
get a cravat, first control your direction. Do this by using weight-shift and enough counter-
brake to stop the turn, but not too much to risk a stall of the opposite side.
A cravat can generally be opened by a short, fast pull on the brake line of the cravat side. If
not, on the Aravis, there is a separate stabilizer main line that goes down to the A riser.
This line usually becomes slack in the event of a cravat. Pull this line down completely until
it becomes tight and the cravat normally comes out.
Note! Counter-steering too strongly on the inflated side of the glider can result in a stall and
to further uncontrolled flight manoeuvres.
Always remain aware of other aircrafts and terrain when dealing with a problem on your
wing. Do not hesitate to throw your reserve parachute if the rotation in a cravat is
increasing uncontrollably, especially if you are at low altitude.