Technical Innovations; Construction Details - Advance sigma 6 Manuel D'utilisation

and independent pilots. The SIGMA 6 pilot possesses the necessary
flying sensitivity, already has experience in cross-country flying and
masters the descent techniques which may be required.
Pilots moving up into the next class will quickly find themselves at
home. The SIGMA 6 provides the necessary safety to enable the pilot
to further develop his ability. Thanks to its balanced take-off beha-
viour, the SIGMA 6 is also suited to Alpine use.

TECHNICAL INNOVATIONS

Developed as an up-market glider, the SIGMA 6 is built with a very
precise and sophisticated technology that gives it an exceptional, dy-
namic behaviour, agility and precision imparting an unique balance.
Every cell wall receives a reinforcement : in diagonal for those co-
ming from the lines attachment points, as a bridge for those between
2 cells without line. This reduces the deformations of the wing, takes
out the rippling movements, increases stability and solidity.
We bring again to the world closed cells on the leading edge. They
make the leading edge more solid, and the air movements and pres-
sures in the glider are more uniform.
A compression strap is sewn between each profile/line attachment
point, on the A and D lines. Thus the space between each cell re-
mains the same, whether the wing is braked or not, making turning
performance uniform and consistent.
There are also some compression straps between some B and C
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lines, between the profiles which receive lines not linked to the same
main line.
The three-level suspension lines have been optimized to reduce drag,
making it easier to untangle and giving more efficiency to the speed-
system. The main lines levels are : 3 A, 3 B, 3 C + Stabilo, 2 D.

CONSTRUCTION DETAILS

As usual at ADVANCE, even the smallest details were important. The
OMEGA 6 is meticulously built, incorporating:
- All internal stitching
- The leading and trailing edges are reinforced with a Mylar border
- The winglets on the wing tips are aerodynamic elements but
also ADVANCE signature
- The lines remain in the correct position on their small quick
links with the incorporation of a plastic clip
- The brake handles are reinforced, easy to take hold of, and
comfortable. They incorporate swivel links to prevent twists in
the brake lines and have magnetic snaplocks to fix them on
the risers
- The wing tips have a Velcro opening for removing debris
- The braking system is optimised with rings that activate the
braking on the wing tips first
INNOVATIONS
Improved risers
With the SIGMA 6, risers are now being offered in two different
lengths. For easier and safer handling by smaller pilots, canopy sizes
22 and 26 are being equipped with shorter risers (difference 4 cm)
than the canopy sizes 28 and 31. This makes the lines easier to reach
when airborne.
Efficient and smooth speed system with SPI
The SIGMA 6 speed system enables an increase in speed of up to
15 km/hr. The system is designed in such a way that on pressing the
speed system, the A, B and C levels shorten by different amounts;
thus an optimum canopy form is maintained even in accelerated
flight.
The system is very smooth in operation thanks to the well designed
pulley arrangement. Its effective mode of operation enables an excel-
lent glide performance, even at high speed.
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Speed-Performance-Indicator · SPI
A speed/performance scale which is printed on each D riser assists
to determine the optimum speed system position. SPI is the link be-
tween practise and theory, so you are always flying at the optimum
cruising speed !
Performance-optimized Speed-optimized
The transition between performance-optimized flying to speed-opti-
mized flying takes place continuously and not abruptly, this is clari-
fied by the continuous change of the bar widths in the scale.
Line geometry
The line geometry has been refined for the SIGMA 6. An 80-metre re-
duction in total line material means less resistance, improved line
control and effective translation of the speed system to the wing
profile.
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