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11
ASS
airfoil stabilizing system
²
Construction
The UP Trango XC
3
is the ideal wing for
pilots that desire the ability of a high-end
performance wing combined with the
safety of an intermediate wing. We
achieve the optimal combination of
performance and safety by implementing
our completely overworked profile (NGA
–
new generation airfoil) with several
innovative detailed solutions
Passive safety by
-
Different Angle of Attack over the
wing span
-
NGA provides perfect internal
pressure at all angles of attack
-
High arc design - very
manageable handling and safety
High performance by
-
High A/R
-
Unsheeted lines
-
Long battens
Aerofoil Stabilising System²
UP was first with the Aerofoil Stabilising
System, an idea that has since been
widely accepted in the industry. The
Trango XC³ uses a modified version of the
same, and we have chosen to call this the
ASS². Instead of Mylar® the ASS²
comprises a Nylon® batten that defines
the leading edge curvature and helps
keeping the cell opening open at all times.
This Nylon® batten is insusceptible to
bending damage and has no ageing
properties
– it will normally outlast the rest
of the canopy by a good margin. This
means that the UP Trango XC³ will retain
its perfect launching characteristics all
through its service life. In the unlikely
event that a batten should break it can be
replaced in a few easy steps
– please
refer to the chapter “Replacing ASS
batten
s” for guidelines.
Performance data
Main
focus
area
during
the
development phase of the Trango XC³
was the improvement of the key
performance figures in comparison to
the predecessor. We wanted a wing
with higher trim speed and better L/D
at all speeds, and through the use of
advanced software we could begin to
compare on the virtual 3D models right
from the outset of the drawing process.
Combining different software allowed
us to draw a wing that at least in the
virtual world was significantly better,
and the real-life refinement and testing
showed that the computer models
were right.
Canopy material
The UP Trango XC³ is sewn from
polyamide cloth, which is particularly
stretch-resistant and durable, and is
specially treated for maximum UV
-
resistance.
