Paragliding
the forward movement inflates the wing.
Reverse launch
In higher winds, particularly ridge soaring, a everse launch is used, with the pilot facing the wing to bring it up into a flying position, then turning under the wing to complete the launch.
Reverse launches have a number of advantages over a forward launch. It is more straight forward to inspect the wing and check the lines are free as it leaves the ground. In the presence of wind, the pilot can be tugged toward the wing and facing the wing makes it easier to resist this force, and safer in case the pilot slips (as opposed to being dragged backwards). These launches are normally attempted with a reasonable wind speed making the ground speed required to pressurise the wing much lower – the pilot is initially launching while walking forwards as opposed to running backward.
Towed launch
Paraglider launching in Arax, Brazil.
In flatter countryside pilots can also be launched with a tow. Once at full height, 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 pays 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 daN to avoid pulling the pilot out of the air. There is one other form of towing; tatic towing. This involves a moving object, like a car or a boat, attached to a paraglider or hanglider with a fixed length line. This is very dangerous because now the forces on the line have to be controlled by the moving object itself, which is almost impossible to do. With static line towing a lockout is bound to happen sooner or later. Static line towing is forbidden in most countries and if not, should be avoided at all cost.
Landing
Landing involves lining up for an approach into wind, and just before touching down, laring the wing to minimise horizontal speed. In light winds, some minor running is common. In moderate to medium headwinds, the landings can be without forward speed.
Ridge soaring
In ridge soaring, pilots fly along the length of a ridge feature in the landscape, relying on the lift provided by the air which is forced up as it passes over the ridge.
Ridge soaring is highly dependent on a steady wind within a defined range (the suitable range depends on the performance of the wing and the skill of the pilot). Too little wind, and insufficient lift is available to stay airborne (pilots end up cratching along the slope). With more wind, gliders can fly well above and forward of the ridge, but too much wind, and there is a risk of being lown back over the ridge.
Paraglider in front of Mont Blanc
Thermal flying
When the sun warms the ground, it will warm some features more than others (such as rock-faces or large buildings), and these set off thermals which rise through the air. Sometimes these may be a simple rising column of air; more often, they are blown sideways in the wind, and will break off from the source, with a new thermal forming later.
Once a pilot finds a thermal, he or she begins to fly in a circle, trying to center the circle on the strongest part of the thermal (the “core”), where the air is rising the fastest. Most pilots use a ario (vario-altimeter), which indicates climb rate with beeps and/or a visual display, to help ore-in on a thermal.
Coring: The technique to “core” a thermal is simple: turn tighter as lift decreases, and turn less as lift increases. This ensures you are always flying around the core.
Often there is strong sink surrounding thermals, and there is often also strong turbulence resulting in wing collapses as a pilot tries to enter a strong thermal. Once inside a thermal, shear forces reduce somewhat and the lift tends to become smoother.
Paragliders in the air at Torrey Pines Gliderport
Good thermal flying is a skill which takes time to learn, but a good pilot can often “core” a thermal all the way to cloud base.
Cross-country flying
Once the skills of using thermals to gain altitude have been mastered, pilots can glide from one thermal to the next to go ross-country (C). Having gained altitude in a thermal, a pilot glides down to the next available thermal. Potential thermals can be identified by land features which typically generate thermals, or by cumulus clouds which mark the top of a rising column of warm, humid air as it reaches the dew point and condenses to form a cloud. In many flying areas, cross-country pilots also need an intimate familiarity with air