Vers.1.0
01/02/2011
S. 14 / 33
Manoeuvres for fast decent
Big ears
To do big ears, pull the outer A-line (attached on a separate belt) on both sides.
Clamps on the D-risers allow fixing the ears effortless for a long time. Before
using the clamp you have to remove the neoprene cover from the clamp.
As long as you keep both outer A-risers pulled, the wingtips will be folded and
the sink speed will increase. We recommend to additionally opening the
trimmers to increase the sink speed further and to also increase forward speed.
The drag of the folded wingtips increases the angle of attack. By opening the
trim system, this effect is compensated.
To end the manoeuvre, release the A-risers. If the wingtips don’t open
automatically, you can inflate them by applying the brakes with a short impulse
movement.
Caution:
You have to make sure before every take off that the neoprene-cover
completely covers the clamp. Otherwise it might happen, that the brake line
gets fixed in the clamp, which might lead to serious accidents.
B-Stall
Due to the short B-risers and due to the high load on the B-riser, the B-stall is
not practicable.
Deep spiral
The deep spiral is the most demanding of the three manoeuvres for fast descent.
(Ears, B-Stall and Deep Spiral) You should only fly deep spirals with the BION
if you perfectly perform the manoeuvre with your solo glider. Due to the longer
lines on a tandem glider, the g-force tends to be higher, than on a solo wing.
Entering a deep spiral can be divided into two phases:
First, you fly a turn by applying one brake and by shifting your weight to the
same side, the glider will bank up and increase its turning speed. This phase
ends at a sink rate of roughly 8m/s – 10m/s. (depending on the wing loading)
