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open class sailplanes – typically around 60:1, but in more common 15–18 meter span aircraft, glide ratios are between 38:1 and 52:1; [4] high glide performance enabling long distance flight, with 3,000 kilometres (1,900 mi) being current (as of November 2010) record [5]
Rolladen-Schneider LS4 (video) A glider sails over Gunma, Japan. A glider or sailplane is a type of glider aircraft used in the leisure activity and sport of gliding (also called soaring). [1] [2] This unpowered aircraft can use naturally occurring currents of rising air in the atmosphere to gain altitude. Sailplanes are aerodynamically ...
The SGS 2-33, indicating Schweizer Glider, Sailplane, 2 Seats, Model 33, was designed by Ernest Schweizer. The aircraft was a derivative of the 2-22, which in turn was based on the SGU 1-7 single place glider of 1937. The 2-33 retained the 2-22 and 1-7's metal wing, single spar and single strut arrangement. [1] [2] [5]
At first the PIK-20 was classified as a Standard Class glider, which at the time allowed either flaps or air-brakes for landing approach control. The specification of the Standard Class required the air-brakes or flaps to be capable of keeping the speed below the maximum speed in a vertical dive.
Owners who corrected this flaw (through profiling) found their LS3s once again equal to the best 15-metre gliders of the day, but by then ASW 20 had become almost ubiquitous in contest entry lists. A variant with separate flaps and ailerons and a slightly taller tail, the LS3a, was introduced in 1978.
At that time the Schweizer SGS 1-23 was the only sailplane in production in the United States and demand for it had dropped off, due to its high price. At the same time the number of people participating in soaring had increased and there was a clear market for a low cost sailplane. [2] Design goals for the new glider included: [2] available as ...
The 2-32 was designed to be the highest performance two-place glider available, when it first flew in 1962. The 2-32 has been used as a tourist glider, trainer, cross-country and high-altitude sailplane and has set many US and world records. A total of 87 aircraft were completed. [1] [3] [4] [5]
The Jonker JS-3 Rapture is a glider built of glass-fibre, carbon fibre and Kevlar. It has full-span flaps and can be operated with a wingspan of either 15 m (49.2 ft) or 18 m (59.1 ft). [2] [3] [4] The manufacturer is Jonker Sailplanes of Potchefstroom South Africa, founded in 2004 by two brothers