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Asymmetrical tuck/collapse, Front/symmetrical tuck collapse – Windtech coral User Manual

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flying.

With the correct technique & qualified instruction the pilot can learn to help stop collap-
ses by flying “actively” & recover the wing more quickly, by the giving the correct input,
when collapses occur. Remember, the glider is tested to recover and so it is always bet-
ter to under-react than to over-react. Over reacting to a situation can prevent the glider
from self-recovering, and recovering air speed, and cause it to enter further unstable
situations.

> asymmetrical tuck/collapse

An asymmetric tuck / collapse is when part (one

side) of the wing ( say 20% or even anything up

to 90% of the span) tucks or collapses,

usually induced by turbulence but someti-

mes also though poor pilot control in

turns and wing-overs.

The CORAL is tested and certified to

automatically recover without correc-

tion by the pilot with a maximum

direction change of 90 degrees of turn.

There are 3 basic steps to follow imme-

diately if you have a collapse:

1: Weight shift to the flying side of your gli-

der (away from the collapsed side). This helps

stop the rotation & increases pressure in the wing in

the inflated side.

2: If needed apply the correct amount of brake to the open (flying) side to slow any rota-
tion (spiral) induced by the collapse. Be very careful not to use too much brake as its
possible to stall the flying side of the glider, and enter further unstable situations which
may be harder to recover from than the collapse itself.

3: Once the glider has straightened out, or the spiral has slowed, smoothly pull down the
brake on the collapsed side, with a long stroke/pump, & the deflated side of the glider
should re-inflate. As the glider re-opens release the brake immediately but progressively.

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