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Hang gliding

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Hang gliding is an air sport involving a light, non-motorized aircraft. This aircraft is called a hang glider. It features a fixed wing but has no engine to provide power.

Hang gliding hyner
Hang gliding hyner

Pilots use these gliders for recreation or sport. Modern hang gliders are built with high-strength materials. Most use an aluminum alloy or a composite frame. This frame is covered by a synthetic sailcloth to create the wing shape. This activity allows pilots to experience the sensation of soaring through the sky.

To fly, the pilot must manage the aircraft's movement through weight shifting. The pilot is secured in a harness suspended from the airframe.

Hanggliding03042006
Hanggliding03042006

Most gliders use a triangle-shaped control frame called an A-frame. This frame consists of two down-tubes and a control bar. To steer, the pilot shifts their body weight in opposition to this stationary frame. This physical movement changes the glider's direction. The wing's shape is maintained by the tension of the sailcloth. This sailcloth is often made of woven or laminated fiber. Woven polyester uses a tight weave of small fibers. It is often treated with a polyester resin to prevent stretching. This resistance is vital for maintaining the aerodynamic shape. Laminated materials use polyester film for even less stretch. However, these can be stiffer and less durable than woven fabrics.

There are several ways a pilot can launch a hang glider. A common method is foot-launching from a hill, cliff, or sand dune.

Other methods include tow-launching from a ground-based system. Pilots can also use aerotowing, which means being pulled behind a powered aircraft. Some even use powered harnesses or are towed by boats. In some cases, pilots have even been dropped from hot air balloons. If the weather is not good for soaring, a pilot might perform a "sled run." This is a simple top-to-bottom flight. Some gliders are specifically built for people who cannot foot-launch.

Humanity has explored gliding for many centuries. In 1853, George Cayley invented a piloted glider launched from a slope. Early pioneers struggled because they did not understand how bird wings worked. In the 1890s, Otto Lilienthal developed controllable gliders.

Lilienthal in flight
Lilienthal in flight

He used weight shifting to steer, much like modern pilots. In 1904, Jan Lavezzari flew a double lateen sail glider in France.

Lavezzari hang glider
Lavezzari hang glider

Later, Octave Chanute demonstrated biplane gliders that included tails. In 1948, Francis and Gertrude Rogallo patented a flexible kite wing. This became known as the Rogallo wing. NASA tested these flexible wings in 1957 for Gemini space capsule recovery. In 1963, John W. Dickenson adapted this concept into the "modern" hang glider. He received a Hang Gliding Diploma from the FAI for this invention.

Safety has improved greatly through technology and training. Early pilots often learned through trial and error, which was dangerous.

KittyHawk
KittyHawk

Today, many countries require mandatory instruction. Modern gliders are built to strict certified standards. They include built-in dive recovery mechanisms like luff lines or "sprogs." Pilots wear various types of harnesses. A pod harness is worn like a jacket, while a cocoon harness is slipped over the head. A supine harness allows the pilot to fly in a seated position. Pilots also carry parachutes that can be deployed manually or with ballistic assist. They often carry helmets, radios, and first-aid equipment. In the UK, a 2011 study found one death per 116,000 flights. This risk is similar to the risk of sudden cardiac death during a marathon.

Advanced techniques allow for incredible feats of flight. By the 1980s, the lift-to-drag ratio of gliders improved significantly. This allowed pilots to soar for many hours. They can gain thousands of meters of altitude using thermal updrafts. Some pilots even perform aerobatics in the air. Others fly cross-country for hundreds of kilometers.

Hyener PA2006
Hyener PA2006

These achievements are possible because of the efficiency of the Rogallo wing. It remains the most used airfoil in the sport today.

Hang gliding connects to many different fields of study. It relies on aerodynamics, which is the study of how air moves around objects. It also involves materials science to create strong, light wings. The sport is governed by organizations like the Fédération Aeronautique Internationale. These groups manage regulations and pilot proficiency.

Understanding the wind and weather is also a vital part of the discipline. This helps pilots avoid dangerous conditions like "cloud suck."

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🖼️ Images & Media (13)
File:Hang gliding hyner.jpg
Hang gliding hyner.jpg
File:Lilienthal in flight.jpg
Lilienthal in flight.jpg
File:Lavezzari hang glider.jpg
Lavezzari hang glider.jpg
File:Paresev 1-B in Tow Flight - GPN-2000-000212.jpg
Paresev 1-B in Tow Flight - GPN-2000-000212.jpg
Hang Gliding - My First Thermal.webm
File:KittyHawk.jpg
KittyHawk.jpg
Launch of a hang glider.ogg
File:GoldenMedows.jpg
GoldenMedows.jpg
File:Hanggliding03042006.JPG
Hanggliding03042006.JPG
File:Hyener PA2006.jpg
Hyener PA2006.jpg
File:Gleitschirmvario.jpg
Gleitschirmvario.jpg
File:Aircraftradio 2790.JPG
Aircraftradio 2790.JPG

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