Ozone Anti-G Manuel D'utilisation page 5

THE ANTI-G
The ANTI-G is a small drag parachute that significantly reduces the
effects of G forces during spiral dives, without reducing the sink rate.
During rapid descent spiral dives, a pilot is exposed to high levels of G
forces, peaking to 5G in extreme circumstances. Prolonged expo-
sure to high levels of G force can cause disorientation, reduction in
the field of vision, nausea, black out even death. The ANTI-G system
reduces these undesirable effects of G force, making high descent
rates possible with added comfort and safety.
The ANTI-G parachute is particularly well suited to modern high per-
formance wings which have high levels of efficiency and long lines. The
combination of these 2 factors increases the G forces felt by a pilot
and makes maintaining prolonged spiral dives with a high sink rate
uncomfortable and difficult.
Retaining clips (2)
The ANTI-G system reduces the number of turns necessary during
a spiral dive. Fewer turns are required to descend the same vertical
distance. The figure below is a 3D illustration of two spirals, without
the device in red and with the ANTI-G system in green.
This has the effect of reducing the G forces without altering the sink
rate.
Bridle (1)
EFFECTS OF G FORCE ON THE HUMAN BODY
Paragliders exert positive g force on the body. This causes blood to
be pushed downwards, away from the brain, towards the feet. Hu-
man tolerance depends on the strength of the G force and length
Centre line handle
of time it is sustained. It also depends on the individual, an average
(3)
person can sustain a level of about 5g before losing consciousness.
3