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__NOTOC__ The Antonov A-1 and related designs were a family of single-seat training gliders produced in the Soviet Union in the 1930s and 40s. All were derived from the Standard-2 (Стандарт-2) (designed and flown by Oleg Konstantinovich Antonov in 1930〔Sheremetev 1959, 20〕), which in turn were derived from the Standard-1.〔Krasil'shchikov 1991, 145〕 They were produced in large numbers, with around 5,400 built of the U-s3, U-s4 and P-s2 major versions alone.〔Central Museum of the Air Force〕 The same design formed the basis for the Antonov A-2 and its related group of two-seat designs. Altogether, including the two-seaters, production exceeded 7,600 by 1937.〔Krasil'shchikov 1991, 143〕 While members of the family varied in detail, they shared the same basic design, and parts were interchangeable between them.〔〔Shushurin 1938, 13〕 The design featured a typical primary glider layout with a conventional empennage carried at the end of a long boom in place of a conventional fuselage. The boom could be folded sideways for storage.〔Shushurin 1938, 16〕 The monoplane wing was carried high on a pylon above this "keel" and was further braced to it with two struts either side.〔Sheremetev 1959, 21–22〕 The pilot sat in front of the wing, and was enclosed in a simple U-shaped wooden fairing that was removed by sliding it forward to allow him or her to enter and leave the craft.〔Sheremetev 1959, 40〕 The undercarriage consisted of a single skid underneath the "keel", but this could also be fitted with small wooden wheels.〔Sheremetev 1959, 42〕 While the original primary training versions (designated ''У'' – "U") featured wings of constant chord,〔 subsequent variants designed for soaring flight (designated ''П'' – "P") had longer-span wings with tapering outer panels and a streamlined nose fairing.〔Krasil'shchikov 1991, 146〕 The ultimate development in the line were gliders intended for towed flight (designated ''Б'' – "B"), which shared the longer wings and streamlined fairing of the P-types, but added a canopy to enclose the cockpit.〔 Unlicenced copies of the P-s2 were produced in Turkey following World War II by THK as the THK-7, and of the U-s4 by THK as the THK-4.〔Deniz 2004〕 ==Variants== In each case, the "s" stands for ''serii'' (серии – "series") ;Prototypes ::Standard-1 (Стандарт-1) ::Standard-2 (Стандарт-2) ;''Uchebnyi'' (Учебный – "Trainer") ::U-s1 (У-с1) ::U-s2 (У-с2) - First version built in series〔 ::U-s3 (У-с3) - 1,600 built〔 ::U-s4 (У-с4) - Redesignated A-1 – major production version (3000 built〔) ;''Paritel' '' (Паритель – "Sailplane") aka Upar (Упар, portmanteau of ''uchebnyi paritel' '' – учебный паритель – "training sailplane") (800 built〔) ::P-s1 (П-с1) ::P-s2 (П-с2) ;''Buksirovochnye'' (Буксировочные – "Towed") (265 built by 1937〔) ::B-s3 (Б-с3) ::B-s4 (Б-с4) ::B-s5 (Б-с5) 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「Antonov A-1」の詳細全文を読む スポンサード リンク
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