Flow Paragliders Cosmos Power Series, Руководство пользователя

Страница: 26 / 35

23
11.2 PERFORMANCE & USE OF BRAKES WHEN FLYING THE COSMOS POWER IN FREE-FLIGHT
Use of Brakes
Cosmos Power’s best glide is at a trim speed (no brakes) – about 40 km/h. The minimum sink rate is achieved by applying approx. 15% of the
brakes. When using more than 30% of the brakes, the aerodynamics and the performance of the glider are likely to deteriorate and the effort to
manoeuvre will increase quickly. In case of extremely high brake pressure there is a great risk of a stall. Which occurs at a full brake travel (100%
of the brakes) 50cm. In normal flying conditions the optimal position for the brakes, in terms of performance and safety, is within the top third
level of the braking range.
Use of Speed Bar
Flow Cosmos Power is equipped with a speed system. The profile of Future has been designed to fly stable through its entire speed range. It is
useful to accelerate when flying in strong winds or in extreme descending air. For fitting and positioning the speed bar consult the instructions of
the harness manufacturer. Before every flight check that the speed bar works freely and that the lines are long enough to ensure that it is not
engaged permanently. Use of the speed bar increases the maximum speed of the paraglider by up to 30% of the trim speed. However, it does
reduce the angle of attack and therefore there is a risk of a frontal (or asymmetric) collapse. We therefore do not advise to use the speed bar near
the ground.
12.8 ASSYMETRIC & FRONTAL COLLAPSES
Cosmos Power is an intermediate/ advanced glider and active piloting is recommended in case of an asymmetric or frontal collapse. Active piloting
will reduce the loss of altitude and a change of direction, and it will always teach the pilot to be in control.
Asymmetric Collapse
Despite the great roll and pitch stability and collapse resistance of Cosmos Power’s profile, heavy turbulent conditions may cause part of the wing
to collapse asymmetrically. This usually happens when the pilot has not foreseen this possible reaction of the wing. To prevent the collapse from
happening, pull the brake line corresponding to the compromised side of the wing, this will increase the angle of incidence. If the collapse does
happen, the Cosmos Power may react violently or gently, the turn tendency can very gradual or dynamic, but it can be easily controlled and from
our experience in real life scenarios Flow’s PPG aerofoil are always highly pressurised and it will reopen and a split second after it collapses. Lean