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The Schweizer SGS 1-35 is a United States 15 Meter Class, single-seat, mid-wing glider built by Schweizer Aircraft of Elmira, New York.〔〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 33. Soaring Society of America, November 1983. USPS 499-920〕 The 1-35 was first flown in 1973 and a total of 101 were completed by the time production was completed in 1982.〔〔〔 ==Background== By the early 1970s competition in the open, standard and 15 meter classes was dominated by fiberglass sailplanes. Schweizer Aircraft evaluated the use of fiberglass for sailplane construction but rejected it for several reasons:〔Schweizer, Paul A: ''Wings Like Eagles, The Story of Soaring in the United States'', pages 159-209. Smithsonian Institution Press, 1988. ISBN 0-87474-828-3〕 *The high cost of demonstrating to the Federal Aviation Administration that this new material could safely be used for aircraft primary structure.〔 *Problems with crash resistance of fiberglass structures in high impact accidents.〔 *The unknown service life of fiberglass.〔 *The high degree of manual labor required to do fiberglass lay-ups at that time and the associated cost.〔 The company believed that it could get equivalent performance to fiberglass from the material that it knew best, aluminum. Experiments with the laminar flow wing Schweizer SGS 1-29 in the late 1950s had shown that there was laminar flow potential in metal wings.〔〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 32. Soaring Society of America, November 1983. USPS 499-920〕 One of factors that convinced the company that there was a market for a US-made competition sailplane was the great loss of value of the United States Dollar in the early 1970s which had made European sailplanes prohibitively expensive to US buyers.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Schweizer SGS 1-35」の詳細全文を読む スポンサード リンク
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