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It would be dangerous to use the brake travel
according to those numbers, because it is not
practicable to measure the brake travel during flight,
and in turbulences the stall might occur with less
brake travel. If you want to use the whole brake travel
of your glider safely, it is necessary to do many
intended spins and full stalls to get a feeling for the
stall behaviour.
10.4 Deep stall
It is possible for gliders to enter a state of deep stall.
This can be caused by several situations including; a
very slow release from a B-line stall; flying the glider
when wet; or after a front/symmetric deflation.
When you meet this situation you should fully raise up
the both brakes and push the A-risers forwards or
release the trims symmetrically to regain normal flight.
10.5 Asymmetrical stall
It can take place when you pull one of the brakes too
hard, or while spiraling at a small speed in turbulence
you increase the angle of attack. Rotation in the
asymmetrical stall is called negative spiral. This is one
of the most dangerous flying situations. In order to get
out of asymmetrical stall, just release the brakes.
There may follow side thrust forward with a following
wing collapse.
