AirDesign Si, Manual And Service Book

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Let the glider enter a turn if space allows in order to avoid a spin or stall.
To assist in the reopening of a frontal collapse the pilot should pull both brakes equally at the
same time. This also reduces the dive after the glider reopens.
NOTE: Pulling too much brake during a frontal collapse recovery can stall the glider or cause
the glider to revert from the frontal collapse directly into a deep-stall.
NOTE: Due to the small size and high loading of the wing the reactions after deformations are
more radical and faster then compared to a normal-sized wing.
j. Reopening a cravat
In extreme conditions it is possible that the wing tip(s) can become trapped between the lines.
In general, this would happen only after a big uncontrolled collapse or during extreme
manoeuvres.
If this cravat occurs, in the first instance use the techniques described for releasing asymmetric
collapses.
If it fails to release, take hold of the stabilo line and pull hard towards yourself until the
trapped section of the wing is released.
A full-stall should be the last option to reopen a cravat and is a manoeuvre for experienced
pilots only and should be attempted only if there is sufficient altitude. At low altitude it is
important to stabilise the rotation, if any, and if necessary use the reserve (rescue) if this is not
possible.
k. Negative spin
We recommend that this manoeuvre is only carried out during a safety training course over
water and under supervision. The intention in this situation is for a pilot to discover the point-
of-spin and to control it. This demands a high level of experience and skill.
The longer the time between the glider entering a spin and the pilot attempting to recover, the
more chance there is of it becoming out of control.
As the glider surges forward slow it down with the brakes to avoid the possibility of an
asymmetric collapse. Always wait for the glider to be in front of you or above you when
releasing a fully deployed spin - never release the spin while the wing is behind you because
the glider would dive very far in front of you or even underneath.
ATTENTION : This manouver requires a lot of height and demands fast reactions and certain
skills to recover. We do not recommend executing this manoeuvre.
l. Full-stall
This is an extreme manoeuvre that should rarely, if ever, be required.
To induce a full stall, pull both brake-lines down smoothly. Hold them down, locking your arms
under your seat until the canopy falls behind you and deforms into a characteristic crescent
shape. In spite of how uncomfortable it may feel as the glider falls backwards, be careful not to
release the brakes prematurely or asymmetrically. If the brakes are released while the glider is
falling backwards the surge and dive forwards is very fast and the glider may shoot in front and
even underneath you.
In a full stall the canopy will oscillate back and forth. To stabilise this, the pilot can release the
brakes slowly and for approximately 1/3 of the brake travel and then hold at this level. Holding