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Soaring pilots can usually climb well above the ridge
they are soaring, but are limited in where they can fly to - once they
leave the ridge, the lifting air currents fade away. The second and more
advanced way of gaining altitude is Thermalling, which involves
flying into a rising column of warm air called a 'thermal'. This column
can be anything from a few metres to a few hundred metres in width,
depending on the strength of the heating and the presence of moisture.
Climbs can be gentle (less than one metre per second) to intense (ten
metres a second) depending on the lapse rate of the air. To gain
altitude the pilot must turn his paraglider in a continuous circle to
remain inside the thermal column. Once thermalling is mastered, pilots
move on to the third discipline of paragliding, being 'Cross Country'
flying. This involves gaining altitude in thermals or ridge lift and
then gliding to another likely source of lift, climbing again, and
gliding on. Great distances can be covered using this technique, the
current
world record
being 423km (and the pending world record 424km).
When one is good enough at Cross Country flying, you may be ready for
the fourth discipline, that of Competition Flying. Here pilots
meet and fly a task, usually a race to the goal, over a course of 30 to
100 kilometres. Scoring is via GPS tracking, everyone launches at a
similar time, and the fastest pilot around the course wins. This is
somewhat like a game of three-dimensional chess, since the faster you
fly in a straight line, the more altitude you lose, so you have to slow
down again to gain altitude when other pilots may pass you. It involves
tactical , but there is usually a greater element of risk because pilots
choose high-performance gliders to get the edge, and these wings are
more unstable and have complicated handling in turbulence.
To improve one's skills and to become a complete pilot, many turn to the
fifth discipline, Extreme Manoeuvre Training or SIV, and
it's relatively new offshoot sport of Acro flying (aerobatics). Here
pilots train under instructor guidance to recover from extreme flight
situations such as stalls and spins. This is usually performed high over
water with a rescue boat at hand. Once the extreme manoeuvres are
mastered, some pilots move on to perfect their aerobatics, doing
co-ordinated high-bank turns, spins, spirals, loops and a host of new
inventions designed to be technically challenging and visually
appealing. Acro flying is spectacular to watch and is playing a large
role in promoting paragliding to the media and public. The biggest event
in the Acro calendar is the World Acro Championships, but display teams
tour the world and do synchronised display flights at major events.
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