Kortel Design Krisis Karré 100 Mode D'emploi page 30

Rev. 5 04/2021
The canopy trim and the airspeed of up to 15 km/h result in a glide ratio of approx.
1:1,5. That means that, e.g. from an altitude of 500 m, the pilot already has the
possibility to specifically approach an area of approx. 1,7 km2 for landing. At lower
altitudes, at least an avoidance of obstacles remains possible. At higher altitudes, it is
even possible to get from the ridge down into the valley or to approach a safe landing
spot.
Twist for steerable rescue systems
Due to the design specifications for paragliding rescue systems and the current pilot
training rules, rescue systems for PG and HG are not certified for free fall and free fall
of the pilot must not occur in any phase of the deployment process. It is legally
prohibited to first separate from the main glider that is sometimes necessary to open
the rescue parachute, e.g. with BASE or skydive systems. The systems have a very
low tendency to twist.
Accordingly, the only possibility in paragliding is to throw the inner container package
more or less uncontrolled into the airspace. Due to the system characteristics,
rotations of the container prior to opening cannot be completely avoided such that
steerable rescue systems sometimes open twisted. When twisted, the Krisis Karre
performs like a conventional cruciform canopy except with increased forward
movement, higher pendulum stablity and a reduced sink rate.
Untwisting
Steerable systems have the characteristic that due to the air drag the main glider is
always on the opposite side of flight direction. If the main glider still has open surface,
a twist (of at least 180°) is system-inherent and usually unavoidable. The pilot flies
backwards.
Generally, the twist has no negative influence on sink rate or pendulum stability and
can – other than a twist of the paraglider – be regarded as non-critical with the Krisis
Karre.
However, the advantages of a steerable rescue system can only be fully utilised if the
main glider is completely disconnected in some kind of way. An uncontrolled partially
open surface of the main glider can never improve the characteristics of the rescue
system concept. This applies also to all non-steerable systems. If the main glider is
disconnected, even multiple twists can be quickly and easily untwisted with the right
technique. By means of quick shear leg movements in upright position (slow in one
direction, quick in the other), the pilot rotates approx. 90° per stroke in the desired
direction. This is a standard technique in skydive training and should be practised
hanging on the rescue system suspension of the harness. Attention: Keep in mind the
direction of rotation! Look up to the rescue parachute while untwisting and check
whether the right stroke direction has been chosen. If necessary, change the spinning
direction by changing the stroke direction of your legs.
No „downplane" tendency immediately after the opening
By contrast to Rogallo rescue systems, the Krisis Karre does not exhibit a „downplane"
tendency toward the main glider. The term describes a constellation where the main
glider and the rescue parachute create lift in different directions and thus lead to a
very high sink rate.
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