THE Documentary thttp://www.facebook.com/profile.php?id=100001983751306 Please check out cruisinwithkenny"s art ..go tohttp://www.cafepress.com/+cruisinwithkenny+gift ? about driving my team of hang gliders up 12"000 feet to the launching spot. steam boat springs ...thunder storm up ate the lake a real time laps ... magine soaring like a ha­wk thousands of feet above the ground. Although the air is somewhat chilly, the view is tremendous and the solitude is relaxing. You search for­ updrafts of air to keep you aloft so that you can enjoy this feeling for hours. This is the experience of hang gliding. The hang glider's wing, called a delta wing or Rogallo wing, is an outgrowth of NASA engineer Francis Rogallo's research on kites and parachutes in the 1960s. Rogallo ­had proposed the wing as a method of returning spacecraft to Earth. The delta-wing parachute was lightweight, durable and highly maneuverable. Later, John Dickenson, Bill Moyes, Bill Bennett and Richard Miller developed the Rogallo wing into the modern hang glider and launched an immensely popular sport shared by millions of people worldwide.Hang gliding is an air sport in which a pilot flies a light and non-motorized foot-launch aircraft called a hang glider that is of a delta wing design. Most modern hang gliders are made of an aluminium alloy or composite-framed fabric ("sailing material derived from parachute fabric") wing. The pilot is ensconced in a harness suspended from the airframe, and exercises control by shifting body weight in opposition to a control frame, but other devices, including modern aircraft flight control systems, may be used. In the sport's early days, pilots were restricted to gliding down small hills on low-performance hang gliders. However, modern technology gives pilots the ability to soar for hours, gain thousands of metres of altitude in thermal updrafts, perform aerobatics, and glide cross-country for hundreds of kilometres. The Fédération Aéronautique Internationale and national airspace governing organizations control some aspects of hang gliding. Gaining the safety benefits from being instructed is highly recommended Most early glider designs did not ensure safe flight; the problem was that early flight pioneers did not sufficiently understand the underlying principles that made a bird's wing work. Starting in the 1880s technical and scientific advancements were made that led to the first truly practical gliders. Otto Lilienthal built (barely) controllable gliders in the 1890s, with which he could ridge soar. He rigorously documented his work, strongly influencing later designers; for this reason, Lilienthal is one of the best known and most influential early aviation pioneers. His aircraft was controlled by weight shift and is similar to a modern hang glider. (He was attached to the gliders by his shoulders, and swung his feet to control them.)Hang gliding saw a stiffened flexible wing hang glider in 1904, when Jan Lavezzari flew a double lateen sail hang glider off Berck Beach, France. In 1910 in Breslau the triangle control frame with hang glider pilot hung behind the triangle in a hang glider was evident in a gliding club's activity.[3] The biplane hang glider was very widely publicized[4] in public magazines with plans for building; such biplane hang gliders were constructed and flown in several nations since Octave Chanute and his tailed biplane hang gliders were demonstrated. In April 1909, a how-to article by Carl S. Bates proved to be a seminal hang glider article that seemingly affected builders even of contemporary times, as several builders would have their first hang glider made from following the plan in his article.[5] Volmer Jensen with a biplane hang glider in 1940 called VJ-11 allowed safe three-axis control of a foot-launched hang glider.[6]

• published: 23 Sep 2013
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