Turns executed in this way will be slightly wider, but strength needed to initiate
the turn will be smaller and there will be no decrease in speed.
Please note the wide operational speed envelope of the Universal achieved by
trimmers only. Due to such wide range we’ve decided to introduce capability of
restricting that range (before the launch) by the pilot according to his skills and
preferences. Even when the trimmer range is restricted by half, applying the
speedbar in urgent needs allows for almost maximum speed. Restricting the
trimmer range is shown in „Adjusting the trimmers” appendix in this manual.
At slower trimer settings both the sink and steering forces decrease, so it is
possible to efficiently use the thermals. Study drawings of trimmers and speed-
system adjusting and setting, as well as their influence on the wing shape.
21
USER MANUAL
Released trims without brakes
Typical setting for fast and safe flying. Center of
pressure of the aerofoil moves forward, practically
excluding collapses. Pitching moment induced by
the reflex aerofoil increases angle of attack.
Released trims with brakes applied
Even slight brakes application (especially on full
speed bar) shifts the center of pressure back, and
due to lack of reflex on trailing edge, pitching
moment now decreases angle of attack.
Additionally turbulence behind the wing occurs. In
some circumstances this can lead to a collapse.
Using the brakes can be sometimes necessary for
heading corrections, still you should keep your
brakes free when flying ahead, otherwise the reflex
feature doesn't work.
Closed trims
In this configuration brakes are the normal and
prescribed steering system. Slow trim is used for
launching in nil wind and thermalling. The canopy
behaves similar to classic profile paragliders, with
slightly increased tuck resistance.
center of pressure
lift
speed
sink
pitching moment
Influence of classic steering on the reflex profile
Pilots used to classic paragliders tend to fly "active" style, with their brakes constantly tensioned.
Flying a reflex wing like that is ineffective and can possibly be dangerous.
Basic rule of reflex paramotoring says: the more turbulent it is, the more trims should be
released and classic steering should be limited, especially with speed system engaged.
In such moments paraglider is much more effectively steered by TST or ALC+ systems, designed
specifically for that reason.
Problem is illustrated by following drawings:
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