B-Stall; Deep Spiral - Nova IBEX 2 Manual

To end the manoeuvre, release the A-lines. If the wingtips don't open
automatically, you can inflate them by applying the brakes with a short impulse
movement.

B-Stall

You can enter a B-Stall by symmetrically pulling both B-risers approximately
15cm. The force is quite high at the beginning, but decreases when you pull
down further. To get a good hold of the risers, it makes sense to grab them on
top at the shackles.
As you pull the risers down, the gliders stops its forward motion and after a
pendulum swinging motion, the IBEX 2 enters a very stable stall state. The sink
rate depends on the wing loading and on how much the pilot pulls the B-risers.
If you pull too far, the glider starts to rotate about the yaw axis. In this case,
release the risers, until the rotation stops. (Please note, that such a rotation can
also be induced by an asymmetric pulling of both risers)
To exit the B-stall, raise up both hands speedily.
Keep the brake handles (without extra wraps) in your hands during the
manoeuvre. Make sure to not apply brakes during the exit!

Deep spiral

The deep spiral is the most demanding of the three manoeuvres. (Ears, B-Stall
and Deep Spiral) You should only practise it with a lot of altitude. The best
way is to learn it under professional guidance.
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)
Then at the beginning of the second phase the g-forces increase rapidly and the
leading edge will lean towards the ground. In a fully developed deep spiral, the
leading edge is almost parallel to the ground. The maximum sink rate with the
IBEX 2 can get up to 25m/s and more.
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