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possible to bleed off all excess speed
even in zero wind conditions."
Airfoil Stabilizing System
We originally designed the ASS system for
our competition gliders where it is used to
ASS
airfoil stabilizing system
stabilise and support the leading edge
especially at high speeds. On the K2² we
use the ASS leading edge reinforcement
to replace the traditional nose Mylars. The
ASS is basically a thin nylon batten sewn
into the leading edge, following the
curvature of the important nose region.
These nylon battens are strong and sturdy
and preserve their shape far longer than
any nose Mylar reinforcement ever will.
This means that the K2² will retain its
perfect launching characteristics far longer
than conventional designs – an important
factor with commercial tandems that are
often packed very fast and not necessarily
in the best way to preserve the nose
Mylars.
Should a nose batten against all odds
break it is easy to exchange. And in
case anyone is wondering; the
collapse behaviour is in no way
negatively influenced by the nose
battens, something that the DHV test
reports will confirm.
Canopy material
The UP K2² is constructed from
polyamide cloth, which is particularly
stretch-resistant and durable, and is
specially treated for maximum UV
resistance.
At UP we are always testing new
materials to see if our wings can
²
benefit from new developments in the
textile industry. After comprehensive
tests we have settled on the following
Porcher Marine material mix for the
K2²:
This mix comprises the best
compromise between weight/bulk and
longevity.
Line material
The UP K2² uses a mix of sheathed
Dyneema and Technora lines from
Cousin Trestec in the diameters: 1.1,
1.3, 1.5, 1.8, 1.9, 2.1 and 2.5
millimetres.
This new combination of line diameters
contributes to the excellent
Leading edge top: 9092 E17
"Evolution Plus" (45 g/m²)
Bottom sail and trailing edge:
9017 E38 (40 g/m²)
Cell walls and V-Tapes: 9017
E29 (40 g/m²)
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