Speed flying
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Speed-flying and speed riding are advanced disciplines of
paragliding Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or lies supine in a cocoon-like 'p ...
that use a small, high-performance paraglider wing to quickly descend heights such as mountains. Speed flying and speed riding are very similar sports; speed flying is when the speed wing is foot-launched, while speed riding is a
winter sport Winter sports or winter activities are competitive sports or non-competitive recreational activities which are played on snow or ice. Most are variations of skiing, ice skating and sledding. Traditionally, such games were only played in cold are ...
done on skis.


Comparison to paragliding and parachuting

Speed flying is a hybrid sport that combines elements of
paragliding Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or lies supine in a cocoon-like 'p ...
and
parachuting Parachuting, including also skydiving, is a method of transiting from a high point in the Atmosphere of Earth, atmosphere to the surface of Earth with the aid of gravity, involving the control of speed during the descent using a parachut ...
to create a new sport. Like paragliding, speed flying is done by launching from a slope with the wing overhead, already inflated by the incoming air. The main difference between speed flying and paragliding, is that speed flying is meant to create a fast, thrilling ride close to the slope, while the point of paragliding is usually to maintain a longer, gentler flight. The fast landing technique for speed wings is similar to that used in parachuting. However, parachuting or skydiving is done from a plane or fixed object ( BASE jumping), and the wing is designed to arrest the free fall. Newer designs of hybrid-wings (also called mini-wings) are now being produced to allow a high speed "hike and fly" from mountainous areas. They can be soared in strong laminar winds and thermalled similar to paragliders, and may also be trimmed for a more traditional speed flying descent.


History

In the late 1970s, French mountaineers began launching parachutes from steep mountains on foot ( ground launching) and with skis. Modifications to these parachutes evolved into larger, easier to launch wings now called paragliders, and parachute ground launching remained largely forgotten. However, advances in material and parachute swooping events inspired a new generation of pilots in France and America about 20 years later. Foot-launched parachute slalom course competitions known as blade running (or runner) competitions started in the Western United States in 1996 and continue with the Blade Raid since 2005. An American team of stunt parachutists expanded the sport, making stunt videos skimming mountain slopes in the Alps from 2001 to 2002. One team member opened the first 'Ground Launching School' for foot-launched parachutes in 2004 in California, US. In 2005, a group of French pilots began experimenting with modified parachute and
parafoil A parafoil is a nonrigid (textile) airfoil with an aerodynamic cell structure which is inflated by the wind. Ram-air inflation forces the parafoil into a classic wing cross-section. Parafoils are most commonly constructed out of ripstop nylon. ...
kite designs. One of them, Francois Bon, a paraglider test pilot, unsatisfied with foot-launched parachute performance, helped perfect the first speed wing design, the Gin Nano. This evolved into other commercial wings (between 9 and 14 square metres) designed for speed, portability, and a lower glide ratio. Today speed gliders are produced by over 30 manufacturers worldwide. France hosted the first yearly speed flying competition, "Speed Flying Pro Les Arcs", in January 2007, which continued to be dominated by pioneer speed flyer Antoine Montant until his death in 2011. The sport has grown rapidly since its inception, particularly in France and Switzerland, with an estimated 3,000 to 5,000 speed wing pilots all over the world. Speed wing pilots have already garnered media attention with rapid descents from summits such as
Aconcagua Aconcagua () is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in the Southern Hemisphere with a summi ...
in the
Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...
and various peaks in the
Alps The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Sw ...
. There are established flying sites all over the globe, including dedicated ski runs at several resorts in France, and over 100 instructors in around 20 different countries. The new air sport has many written forms (such as speedflying, speed-flying, speed flying, speed riding, speedriding, speed-riding, skigliding, ski-gliding, ski gliding, ski flying, ski-flying and ground launching).


The wing

The wing itself is known as a speed glider, speed wing, or speed flyer. It has similar material to a
paraglider Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or lies supine in a cocoon-like ...
(with a
ripstop __NOTOC__ Ripstop fabrics are woven fabrics, often made of nylon, using a reinforcing technique that makes them more resistant to tearing and ripping. During weaving, stronger (and often thicker) reinforcement yarns are interwoven at regular inte ...
nylon fabric wing, treated with a
polyurethane Polyurethane (; often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from ...
or silicon coating,
Kevlar Kevlar (para-aramid) is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, the high-strength material was first used commercially in the early 1970s a ...
or
Dyneema Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene, (HMPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. T ...
lines protected by an outer sheath, and
Mylar BoPET (biaxially-oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, chemical and dimensional stability, transparency, reflectivity, gas and a ...
reinforcement on the cell openings at the leading edge). However, the speed wing is only about half the size of an average paraglider (see the table below). The wing's small size and unique design give it a much smaller
glide ratio In aerodynamics, the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused by moving through air. It describes the aerodynamic efficiency under giv ...
making it more suitable to fly close to the slope. The smaller size also allows the wing to be flown in windier environments, and minimizes weight for hiking. The speed glider flies at speeds of 20 to 95 mph versus a paraglider's 12 to 50 mph. It also shares characteristics with a
ram-air parachute A parachute is a device used to slow the motion of an object through an atmosphere by creating drag or, in a ram-air parachute, aerodynamic lift. A major application is to support people, for recreation or as a safety device for aviators, wh ...
. It differs, however, because it is much lighter, more maneuverable, doesn't have a pilot chute or slider, and is not suitable for arresting free falls. The pilot can use a standing harness similar to those worn with a parachute, a strap-like sitting harness, or a protectively padded, seated harness (identical to those used with a paraglider). The speed flyer has adjustable trims on the rear riser, and sometimes the front riser. These allow the pilot to adjust the line lengths and pick the wing
angle of attack In fluid dynamics, angle of attack (AOA, α, or \alpha) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is m ...
best suited for the hill steepness and wind conditions. Speed flying and speed riding require different wing characteristics because of the different glide angles and launch techniques. Speed riding pilots are able to achieve greater speeds on launch with the use of skis, and so the use of a smaller wing (typically between 7 and 10 square metres) is common, and wings tailored to this aspect of the sport typically have a steeper glide angle and long recovery arc to allow skiing on steep slopes with the wing overhead. Speed flying pilots must launch on foot, so wing sizes are typically slightly larger, although many expert speedflying pilots do routinely foot launch wings of 8 square metres or less.


Safety

Because of the high flight speed (30–152.9 km/h or 20-95 mph), and close proximity to the slope and obstacles, injury and death are considerable risks in this sport. Over 75 pilots have suffered fatal injuries worldwide since 2006. Also, because of its small size and high
wing loading In aerodynamics, wing loading is the total mass of an aircraft or flying animal divided by the area of its wing. The stalling speed of an aircraft in straight, level flight is partly determined by its wing loading. An aircraft or animal with a ...
, the wing responds quickly to little pilot input, which makes professional instruction very important. However, the high velocities help the glider remain pressurised and resistant to collapse even in turbulent conditions. Proper equipment such as helmets, padded harnesses, and reserve parachutes can help reduce injuries. Advanced wing and ski training, and thorough knowledge of site conditions and hazards, are imperative to practicing this sport safely.


References


External links


Abovethepines: website information (spot map, schools, wing reviews, weather...)

SKIANDFLY: website information (has organised speed riding camps, workshops for beginner, intermediate and expert speed riders in France, Norway and New Zealand)

Speedriding and speedflying spots, tips, photos, videos
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