Sol KANGAROO, Руководство оператора, Страница: 11 / 22

Extreme Flying Manoeuvres
EXTREME FLYING MANOEUVRES SHOULD ONLY BE CARRIED OUT DURING
SAFETY TRAINING COURSE (INSTABILITY TRAINING) UNDER PROPER
INSTRUCTION !
Tuck :
A negative angle of attack will cause the SOL KANGAROO, like any other glider, to
tuck.
If one wing tucks, straight flight is maintained by “correcting for direction”, braking
gently on the inflated side.
The pilot’s “correction for direction” can be aided by a “pumping out of the
deflation”, a slow, long pumping action on the brake of the deflated side of the wing
helps the canopy to re-inflate.
In case of a big tuck this braking should be very gentle to avoid the remaining
inflated canopy from stalling. Weight shifting away from this collapsed side also
helps, allowing less brake to be used and thus a greater margin of safety from the
stall point.
If the pilot does not correct for direction, the canopy usually self-recovers, in
smooth air, in less than 1 complete turn. In case the canopy does not recover by
itself, the appropriate amount of brake must be applied to correct for direction and
exit the turn otherwise the glider will enter a spiral dive.
If this spiral dive is entered, it should be exited by slowly and gently applying the
outside brake until the canopy starts to retain a level bank angle. Just at this
phase, when the pilot pendulums under and in front of the canopy, it is vital that the
brakes are applied very gently, feeling the pressure and not applying too much. In
fact, often it is necessary to partially release the brakes. When the glider is flying
straight and level again, “pump out” the collapsed side.
IF THE ABOVE SPIRAL IS NOT ACTIVELY EXITED FROM BY THE PILOT, IT
WILL CONTINUE UNTIL IMPACT !
THE FORCES ACTING ON THE BRAKES OF A TANDEM GLIDER ARE
SIGNIFICANTLY HIGHER THAN ON A MONO GLIDER. IN A SPIRAL WITH
TUCK THEY INCREASE EVEN MORE !
The SOL KANGAROO surges forward a little bit after recovering from a full stall
whereby a tuck may occur.