24
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- Fast descent maneuvers
Attention
•
All fast descent maneuvers are to be executed with the engine switched off or
with motor idling.
•
All fast descent maneuvers must be executed in light conditions and at sufficient
altitude, so that they can be performed as necessary under
extreme
flying
conditions.
•
'Full Stalls' and negative spirals must be avoided, regardless of the power glider
being flown. Incorrect recoveries and exits can result in disastrous consequences.
•
The best flight technique is to fly safely and correctly. This way you will never need
to descend rapidly!
Ears
By pulling simultaneously the external riser 'A1' at
about 18 cm, the canopy tips will close. The canopy
remains
completely
maneuverable
through
the
activating of unilateral brakes or the shifting of weight
towards the risers, flying at a fast descending rate (up to
approximately 5m/s). In order to recover, the pilot must
release the external riser 'A1' lines. Usually the canopy
re-opens by itself, but the pilot can assist with a long
and quick pumping.
Attention
S
S
O
O
L
L
does not recommend combining of ears and spirals, as this may exceed the
allowable load.
Positive Spiral
When the pilot activates just one brake, slowly and progressively, the
F
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inclines
sideways in a sharp angle and enters a steep and quick turn, which may become a
positive spiral.
During a spiral the rotation radius can be controlled by the greatest or smallest force
applied to the inside brake. In order to come out of it, the pilot must release the brake
slowly and shift his/her weight lightly to the outside of the turn. A sudden exit may
result in an exaggerated momentum forward of the canopy, and collapsing it. For this
reason, on exiting the last turn, the inside brake of a given turn must be softly applied
again.
In case the canopy collapses during this process, the spiral must be counter-acted, as
the active canopy area will be reduced.
Spirals carry a high rate of descent. Therefore high accelerations (G) make it impossible
to hold them for an extended period of time. The spiral force may cause the pilot to
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