SPECIAL FEATURES
Bullet
Riser
1.
Bullet Riser
- a revolutionary design of riser. (In the best APCO
tradition thinking outside the box)
The riser
which will set the future standard for the industry -
reduction of riser drag by 80% and more.
Its drop shaped branches produce only a fraction of the
drag produced by regular risers.
It is still made from the same 25mm. width webbing, but
shaped into a tear drop profile - easy to understand and
handle.
Instead of
making risers from narrower webbing (a recent trend
followed by everyone else) which leads to a hardly
noticeable slight reduction of drag, we took a more
innovative approach. Taking the same 25mm flat webbing
riser (facing the flow against its full width - with a
huge amount of drag) and transforming it into a tear
drop shape cross section, producing minimal amount of
drag - see sketch illustrating the differences. It is a
most effective way of improving performance without
sacrificing safety, handling and integrity of the wing.
Bullet risers are the latest addition to the other
innovative ideas from APCO's design house aimed at
improving performance and safety, with no collateral
costs (imbedded minimal drag hook-up points, partial
diagonal rib construction, SRS, HIT valves, FLEXON and
many more................)
2.
Accelerated Flight Brake Compensator -
All
gliders share a common problem in accelerated flight.
The trailing edge moves up when the angle of attack is
reduced for accelerated flight. Since the brake line
length / brake slack is adjusted for trim speed , on
accelerated flight the brake line is not long enough and
actually starts to pull down the trailing edge, slowing
down the glider.
APCO is
introducing a clever, automatic compensator - this
automatically compensates for the lack of brake line
length in accelerated flight, allowing for full
potential of speed range. See sketch below for
explanation.
3. New,
internal rib structure to prevent deformation of the
sail and total line length reduction.
Advanced diagonal rib structure used to reduce line
length and line drag - see sketch below.

TECHNICAL
DATA
|
|
X-Small |
Small |
Medium |
Large |
|
Product
Code |
21100
|
21200
|
21300
|
21400
|
|
Cells |
52
|
53
|
55
|
57
|
|
Area [m2] |
25.54
|
26.36
|
28.00
|
29.64
|
|
Area
(projected) [m2] |
22.79
|
23.53
|
25.01
|
26.49
|
|
Span [m] |
11.9
|
12.20
|
12.82
|
13.44
|
|
Span
(projected) [m] |
9.94
|
10.22
|
10.78
|
11.34
|
|
Aspect
Ratio |
5.54
|
5.65
|
5.87
|
6.09
|
|
Aspect
Ratio (projected) |
4.35
|
4.45
|
4.65
|
4.85
|
|
Pilot
Weight (all up) [kg] |
55-75
|
70-95
|
85-110
|
100-130 |
|
Canopy
Weight [kg] |
5.8
|
6.0
|
6.3
|
6.6
|
|
Root Chord
[m] |
2.71
|
2.71
|
2.71
|
2.71
|
|
Tip Chord
[m] |
0.54
|
0.54
|
0.54
|
0.54
|
|
Length of
Lines on B [m] |
7.15
|
7.4
|
7.9
|
8.4
|
|
Total
Length of Lines [m] |
|
332
|
350
|
|
CERTIFICATION
|
Libra Certification Data |
|
LIBRA EXTRA-SMALL |
Pending |
|
LIBRA SMALL |
EN - C
(certification flights) |
|
LIBRA MEDIUM |
EN - C
(certification flights) |
|
LIBRA LARGE |
Pending |
|
|

PERFORMANCE
|
V-min
[km/h] |
21 |
|
V-trim
[km/h] |
38 |
|
V-max
[km/h] |
55+ |
|
Min Sink
[m/s] |
0.9 |
LIBRA
delivered with bullet risers and brake compensator, as
standard Our usual extras (bag, stuff bag, closing belt, 3
Year Warranty etc.) continue to be delivered with every wing
Wonder Bar optional instead of speed bar - at your request
for a small additional charge.
Price
including VAT and delivery £2750