B-Line Stall; Big-Ears - Airdesign Susi 2 Betriebshandbuch Und Serviceheft

be neutralised. Descent is controlled by pulling more on the inner brake. A slight pull on the
outside brake helps to keep the glider stable.
Recovery: The SuSi recovers from a spiral spontaneously as soon as the brakes are released
and weight shift returns to neutral. To exit, allow the spiral to slow down for a turn or two by
slowly releasing the inner brake. Once the glider starts to exit the spiral, control your descent
rate and bank angle with weight shift and the outer and/or inner brake to prevent any strong
climbs out of spiral. Always finish a spiral dive at a safe altitude.
The SuSi does not show any tendency for a stable spiral. That means the glider does not remain
in spiral after releasing the brakes. If the glider should, in rare cases, remain in a stable spiral
the pilot should first weight-shift to the outside and then brake slightly more on the outside.
The SuSi has no tendency to remain in a stable spiral.
However, in extreme cases with sink rates exceeding 18m/sec the glider can remain in the
spiral. Even in such cases, the SuSi remains easy to control.
By weight-shifting to the outside of the spiral, the wing will exit. Please note: weight-shifting
towards the inside makes the wing stay in the spiral or may increase the sink rate.
SuSi reacts very well to brake input and the spiral can be easy controlled using the brakes only.
ATTENTION: In a stable spiral the G-forces are very high. Be aware that it may therefore
require considerable more input and effort to recover from this state.
IMPORTANT SATEFY NOTICE! A pilot who is dehydrated and/or not accustomed to spiralling
can lose consciousness during a steep spiral dive!
ii. B-line stall
This is an effective way of making a moderate to rapid descent but doesn't allow any forward
speed.
Initiation: Take hold of the B-risers (both sides at same time) just above the maillons and
slowly but smoothly pull them down, twisting your hands until the canopy shows a span-wise
crease at the B-line attachment points and stops flying forward. It is difficult to pull at first but
becomes easier as the airfoil creases. Your sink rate will increase while your forward speed will
reduce to practically zero.
Recovery: Let go of the risers smoothly but determinedly and symmetrically, the glider will
speed up and gain forward movement. The brakes are kept in your hands at all time during this
manoeuvre. When exiting take care not to pull the brakes.
ATTENTION: IF THE B-RISERS ARE PULLED DOWN TOO MUCH THE WING MAY LOOSE ITS
SPANWISE FORM OR THE TIPS COME IN FRONT OF THE CENTRE OF THE WING. IN THIS
INSTANCE THE B-RISERS MUST BE RELEASED IMMEDIATELY.
iii. "Big-ears"
This is the easiest and safest technique for descent while maintaining forward speed.
Depending on how much of the wing-tip you deflate, 3m/s to 5m/s sink rate can be achieved.
While in big-ears your forward speed can be increased by using the speed system (pull in the
A´s first and then accelerate).
The tendency for the wing to collapse is reduced while flying with big-ears.
The SuSi can be steered with big ears in by weight-shift alone.
Initiation: Reach up high and take hold of the metal maillon (quick-link) of the "outer" A-riser
on each side of the glider. Pull both sides down simultaneous. Hold them in firmly. The tips will
fold in. Make sure the lines are pulled down equally on each side and your big ears are even.
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