If a wing stalls completely the paraglider will go into a spin / nega-
tive rotation . The SIGMA 9 will react dynamically, but will still be
manageable by the less experienced pilot . Even so – depending on
the situation from which the paraglider is allowed to fly again – the
reaction can be quite vigorous (shooting forward with a raised risk
of collapse ) . The canopy can be arrested while shooting forward
by well-judged braking . Normal flight can then be resumed without
a further collapse .
Tip: Basically, in all out-of-control flight situations, but espe-
cially the onset of a one-sided stall, you should immediately
release both brakes fully – hands up!
Fullstall
Although the SIGMA 9 responds early to brake input it has very
long brake travel, and very high brake load at the stall point . This
means a large safety margin for the pilot .
Entry into a fullstall is achieved by progressively and symmetrically
pulling down both brake lines . Forward speed reduces . Airflow and
wind noise reduce . After reaching minimum speed the paraglider
first goes into a brief phase of parachutal stall . Then further brake
will cause complete airflow breakaway, and the wing will fall back
in fullstall . The SIGMA 9 has a strong desire to fly again, but is easy
to hold in the stall . A half wrap of the brakes is recommended to fly
fullstalls .
To recover, the canopy has to be pre-inflated . To do this the brakes
should, at first, be released slowly and symmetrically, and only fully
released when pre-inflation is complete . The SIGMA 9 then flies
away relatively cleanly, without shooting forward too much .
Tip: As a basic principle you should immediately and fully
release both brakes in all out-of-control situations, then be
prepared to control the resulting surge carefully .
Deep stall
Stable parachutal stall cannot be established, whether attempted
by brake or B-stall .
In rain, or if the canopy is wet, the SIGMA 9, like all paragliders, is
more vulnerable to parachutal stall . If the wet glider were to go into
parachutal stall you should recover only by accelerating using the
speedbar . See also section «Flying with a wet paraglider» .
25
Содержание SIGMA 9
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Страница 42: ...List of parts Winglet Upper sail Foreign object outlet Ribs Undersail Air intakes Tension straps Cells 42 ...
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