3rd Year Special Annual Double Issue Vol 4 Issue 1 & 2 Jan - Apr 2 3rd Year Special Annual Double Issue Vol 4 Issue | Page 21

Knees bent to load the wing, foot adjustments to remain central and minimum use of C’s or Brakes to keep the wing horizontal. Pirouette when the feet are close to lifting. This option has two distinct advantages. a) The pilot can see the wing centre marker (an aid to centering the feet) and, if necessary, b) the pilot can move briskly towards the wing to assist with an emergency deflation. With either method it is essential to check “traffic” across the launch face before committing to flight. Towed launch In flatter countryside, pilots can also be launched with a tow. Once at full height (towing can launch pilots up to 3000 feet altitude), the pilot pulls a release cord, and the towline falls away. This requires separate training, as flying on a winch has quite different characteristics from free flying. There are two major ways to tow: pay-in and pay-out towing. Pay-in towing involves a stationary winch that winds in the towline and thereby pulls the pilot in the air. The distance between winch and pilot at the start is around 500 meters or more. Pay-out towing involves a moving object, like a car or a boat, that pays out line slower than the speed of the object, thereby pulling the pilot up in the air. In both cases, it is very important to have a gauge indicating line tension to avoid pulling the pilot out of the air. Another form of towing is “static line” towing. This involves a moving object, like a car or a boat, attached to a para- glider or hang glider with a fixed-length line. This can be very dangerous, because now the forces on the line have to be controlled by the moving object itself, which is almost impossible to do, unless stretchy rope and a pressure/tension meter (dynamometer) is used. Static line towing with stretchy rope and a load cell as a tension meter has been used in Poland, Ukraine, Russia, and other Eastern European countries for over twenty years (under the name Malinka) with about the same safety record as other forms of towing. One more form of towing is hand towing. This is where 1−3 people pull a paraglider using a tow rope of up to 500 feet. The stronger the wind, the fewer people are needed for a successful hand tow. Tows up to 300 feet have been accomplished, allowing the pilot to get into a lift band of a nearby ridge or row of buildings and ridge-soar in the lift the same way as with a regular foot launch. Vol 4 | Issue 1 |Jan - Feb 2019 Landing Landing a paraglider, as with all unpowered air- craft which cannot abort a landing, involves some specific techniques and traffic patterns. Paragliding pilots most commonly lose their height by flying a figure of 8 in over landing zone until the correct height is achieved, then line up into the wind and give the glider full speed. Once the correct height (about a meter above ground) is achieved the pilot will ‘stall’ the glider in order to land. Traffic pattern Unlike during launch, where coordination between multiple pilots is straightforward, land- ing involves more planning, because more than one pilot might have to land at the same time. Therefore, a specific traffic pattern has been established. Pilots line up into a position above the airfield and to the side of the landing area, which is dependent on the wind direction, where they can lose height (if necessary)by flying circles. From this position,they follow the legs of a flightpath in a rectangular pattern to the landing zone:downwind leg, base leg, and final approach.This allows for synchronization between multiple pilots and reduces the risk of collisions, because a pilot can anticipate what other pilots around him are going to do next. Techniques Landing involves lining up for an approach into wind and, just before touching down, “flaring” the wing to minimise vertical and/or horizontal speed. This consists of gently going from 0% brake at around two meters to 100% brake when touching down on the ground. In light winds, some minor running is common. In moderate to medium headwinds, the landings can be without forward speed, or even going backwards with respect to the ground in strong winds, but this would usually mean that the conditions were too strong for that glider. Additionally, at around four meters before touching ground, some momentary braking (50% for around two seconds) can be applied then released, thus using forward pendular momentum to gain speed for flaring more effectively and approaching the ground with minimal vertical speed. For strong winds during landing, two tech- niques are common: the first, “flapping” the wing to make it lose performance and thus 21