AirDesign SUSI 4 Manuel D'instructions page 57

g.
The speed system on the SUSI 4 comes supplied with 'quick hooks' ready to attach to a speed
bar of choice. The complete speed system should be checked to ensure it runs smoothly by
hanging in the harness before flying.
In particular, check that the speed system won't be engaged when in normal flight.
Unnecessary knots and loops in a speed system are not recommended.
When pushing the speed bar the angle of attack of the glider is reduced. The glider speeds up
but at the same time is more sensitive to deformation.
In spite of the exceptional stability of the SUSI 4, any accelerated collapse will be more dynamic
than the same event experienced at trim speed and will require quicker reactions to maintain
normal flight.
Always keep both hands on the controls when flying fast or in turbulence and be ready to
release the speed system immediately at the first sign of a collapse.
When flying through strong sink or into a headwind it is useful to fly faster using the speedbar.
Use the speed system carefully when flying close to the terrain and maintain enough height
from the ground or other obstacles to recover in the event of a collapse.
USEFUL INFORMATION
When flying in turbulences being top loaded and accelerating full-bar the SuSi 4 can start to
wobble or swing along the span sometimes (only at the very top end of full-speed). The
stability of the wing isn't impaired then. By using the BC-control or reducing the speed bar
slightly will control it.
The SuSi 4 is very stable when accelerating it – also pulling the brakes when accelerating is
possible. Nevertheless, we do not recommend pulling the brakes while flying fully accelerated
as a precaution.
h.
The SUSI 4 is easy to land, however, on your first flights you may be surprised at how well it
glides. Take account of this when making your landing approach and give yourself the
opportunity for S-turns or a longer approach than you might be used to.
For a normal, into-wind landing evenly pull the brakes all the way down when you are close to
the ground and straighten up to land on your feet. The glider will stop almost completely as the
brakes are fully applied. Avoid landing directly out of a turn or wing-over since the momentum
of the pilot will be much greater due to the pendulum effect.
Attention:
After touching down do not allow the glider to dive overhead and fall in front of you. If the
leading edge hits the ground hard the structure of the cell walls may become damaged.
i.
When towing or winching, the glider must be above the pilots head before starting.
In the initial phase the tension should not be too high – a pilot climbing at a flatter angle has
more control.
Accelerating
Landing
Towing and winching
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