Gliding is a recreational activity and competitive air sport in which pilots fly unpowered aircraft known as gliders or sailplanes using naturally occurring currents of rising air in the atmosphere to remain airborne. The word soaring is also used for the sport.
Gliding as a sport began in the 1920s. Initially the objective was to increase the duration of flights but soon pilots attempted cross-country flights away from the place of launch. Improvements in aerodynamics and in the understanding of weather phenomena have allowed greater distances at higher average speeds. Long distances are now flown using any of the main sources of rising air: ridge lift, thermals and lee waves. When conditions are favorable, experienced pilots can now fly hundreds of kilometres before returning to their home airfields; occasionally flights of more than 1,000 kilometres (621 mi) are achieved.
Some competitive pilots fly in races around pre-defined courses. These gliding competitions test pilots' abilities to make best use of local weather conditions as well as their flying skills. Local and national competitions are organized in many countries, and there are biennial World Gliding Championships. Techniques to maximize a glider's speed around the day's task in a competition have been developed, including the optimum speed to fly, navigation using GPS and the carrying of water ballast. If the weather deteriorates pilots are sometimes unable to complete a cross-country flight. Consequently they may need to land elsewhere, perhaps in a field, but motorglider pilots can avoid this by starting an engine.
Powered-aircraft and winches are the two most common means of launching gliders. These and other launch methods require assistance and facilities such as airfields, tugs, and winches. These are usually provided by gliding clubs who also train new pilots and maintain high safety standards. Although in most countries the standards of safety of the pilots and the aircraft are the responsibility of governmental bodies, the clubs and sometimes national gliding associations often have delegated authority.
The sport is facing challenges to maintain its popularity. Many factors have put pressure on the movement such as the increasing demands on people's time, cost of insurance and fuel, competition from other air sports and the growing requirement for land and controlled airspace.
Other articles related to "gliding":
... SHGC can mean Sacred Heart Girls' College, Hamilton Solar Heat Gain Coefficient Many hang gliding clubs, notably Sydney Hang Gliding Club, Southern Hang Gliding Club (UK ...
... The two air sports that are most closely related to gliding are hang gliding and paragliding ... Radio-controlled gliding uses scale-models of gliders mainly for ridge soaring however thermic aeromodelling craft are also used ...
... The Cotswold Gliding Club (CGC) is based at Aston Down airfield, between Cirencester and Stroud in Gloucestershire, South West England ... for training purposes, and is a centre for cross-country gliding and competitions ...
... The Long Mynd has been home to the Midland Gliding Club since 1934 ... Midland Gliding Club is one of the last clubs in Europe to regularly launch gliders by bungee ...
... History Rhön-Rossitten Gesellschaft Schweizer brothers Gliding as a sport Gliding Gliding competitions Other unpowered aircraft Unpowered aircraft Rotor kite Unpowered ...
Famous quotes containing the word gliding:
“One might call habit a moral friction: something that prevents the mind from gliding over things but connects it with them and makes it hard for it to free itself from them.”
—G.C. (Georg Christoph)
“How soon unaccountable I became tired and sick,
Till rising and gliding out, I wanderd off by myself,
In the mystical moist night-air, and from time to time,
Lookd up in perfect silence at the stars.”
—Walt Whitman (18191892)
“I stand on a bridge of one span
and see this calm act, this gathering up
of life, of spring water
and the Muse gliding ...”
—Denise Levertov (b. 1923)