28
brakes influence on the reflex airfoil
Released trimmers without using brakes
Typical configuration for fast and safe flying.Center of
pressures of the aerofoil moves forward, practically
excluding frontal collapses. Pitching moment increases
the attack angle.
Released trimmers with brakes applied
Even slight brake operation (especially when fully
accelerated) will move the centre of pressures
backwards, and the pitching moment will decrease the
angle of attack. Additionally, the airflow is considerably
disturbed. In particular cases this can cause a collapse.
Steering can be necessary for heading corrections,
nebertheless you should keep your brakes fully
released when flying straight – otherwise the reflex
feature will not work.
Closed trimmers
Using the brakes is a typical steering mode in this
configuration and does not cause any danger.This
setting is used during launch, landing and thermalling.
The canopy behaves much as classic profile paraglider,
with slightly increased tuck resistance.
centre of pressures
lifg
speed
sink
pitching moment
Influence of brake operation on the reflex profile
Pilots used to flying classic paragliders tend to
„active” piloting with their brakes always under
tension. Flying a reflex wing like that is not only
ineffective, but can be dangerous too.
The basic rule of flying reflex paragliders says:
the
more turbulent is the air encountered, the more trims
should be released and use of regular brakes
avoided (especially with speedsystem engaged).
Important:
at high speeds all steering inputs should
be smooth and easy, without abrupt actions like
yanking or rough deep pulling the brakes.
Summary of Contents for Universal 1.1 23
Page 1: ...user manual V 07 07 2018 BASIC risers ...
Page 46: ...46 rigging scheme ...