Windtech bali - Manual (Page 10)

10
With instruction
& experience the above will become a reflex action, and the correct
input to give will become second nature to the experienced pilot.
-- front/symmetrical tuck collapse
A front tuck /collapse is a symmetric tuck of the leading edge of the wing, starting from
the centre of the canopy to the wing tip. This can be either a tucking of just the central
part of the leading edge of the glider, which can sometimes cause a front 'horseshoe' or
'rosette-ing' of the glider, or even a complete 'blow-out' of the whole canopy in extreme
situations.
When flying, a front tuck may occur while leaving a strong thermal, or more often while
using the speed system in turbulent air, or sometimes whilst flying down-wind of anoth-
er paraglider
& being 'waked' by the wing tip vortices of the glider and turbulence wake
turbulence of the pilot.
Remember, the pilot can learn to help stop collapses by flying 'actively', but if a front tuck
does occur it will easily clear itself. Re-inflating the wing can be helped by correct pilot
input and, once the glider is overhead, symmetrically applying 40 % of both brakes
&
then releasing immediately will get pressure back in to the glider and speed up the recov-
ery. Do not brake when the glider is behind you, as this can stall the wing, but wait for
the glider to shoot forward above your head, then brake.
-- cravats
If the wing tip gets stuck in a line this is a "cravat". This may cause a spiral very difficult
to control. First thing you have to do is to regain stable flight and flight straight. Then by
pulling down the stabile line try to free the wingtip. You have to be careful with the
amount of brake input since you may cause a stall by pulling to much the opposite brake.
In the case this method does not work the only option is a full stall. Do this with plenty
of height. If the wing spin accelerates and you can not control it any longer you have to
use the emergency parachute when there is still a lot of height.
-- asymmetric stall
This can happen when turning in a thermal at low speed (near the stall point) when you
want to close the turn and you don't rise the outer brake but you apply more input to the
inner brake causing an asymmetrical stall (half wing will fly forward and the other back-
wards) When this happens to regain stable flight you have to rise the inner brake and the
wing will surge forward. Depending on the flat spin the surge can be quite large. Use the
brakes to stop the surge. Another option is to achieve a full stall and exit in a symmetri-
cal way to avoid any twist. Do this with plenty of height above ground.
-- deep stall
It is possible that a glider goes into deep stall. This maybe caused in different situations:
when flying the wing wet, and after a slow exit from a B stall or after a symmetrical or
asymmetrical tuck. The result are that even when the canopy looks fully inflated is not