Antonov A-1

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A-1
Role Training glider
National origin USSR
Designer Oleg Konstantinovich Antonov
First flight 1930
Number built ca. 5,700

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[1]), which in turn were derived from the Standard-1.[2] They were produced in large numbers, with around 5,400 built of the U-s3, U-s4 and P-s2 major versions alone.[3] 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.[4]

While members of the family varied in detail, they shared the same basic design, and parts were interchangeable between them.[1][5] 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.[6] The monoplane wing was carried high on a pylon above this "keel" and was further braced to it with two struts either side.[7] 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.[8] The undercarriage consisted of a single skid underneath the "keel", but this could also be fitted with small wooden wheels.[9]

While the original primary training versions (designated У – "U") featured wings of constant chord,[7] subsequent variants designed for soaring flight (designated П – "P") had longer-span wings with tapering outer panels and a streamlined nose fairing.[10] 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.[10]

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.[11]

Variants[edit]

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[2]
U-s3 (У-с3) - 1,600 built[3]
U-s4 (У-с4) - Redesignated A-1 – major production version (3000 built[3])
Paritel' (Паритель – "Sailplane") aka Upar (Упар, portmanteau of uchebnyi paritel' – учебный паритель – "training sailplane") (800 built[3])
P-s1 (П-с1)
P-s2 (П-с2)
Buksirovochnye (Буксировочные – "Towed") (265 built by 1937[4])
B-s3 (Б-с3)
B-s4 (Б-с4)
B-s5 (Б-с5)

Specifications (A-1)[edit]

Antonov A-1.svg

Data from Krasil'shchikov 1991, 230

General characteristics

  • Crew: One pilot
  • Length: 5.60 m (18 ft 5 in)
  • Wingspan: 10.56 m (34 ft 8 in)
  • Height: 1.70 m (5 ft 7 in)
  • Wing area: 15.6 m2 (168 ft2)
  • Empty weight: 92 kg (200 lb)
  • Gross weight: 164 kg (361 lb)

Performance

  • Maximum speed: 70 km/h (40 mph)
  • Rate of sink: 1.2 m/s (240 ft/min)

Notes[edit]

  1. ^ a b Sheremetev 1959, 20
  2. ^ a b Krasil'shchikov 1991, 145
  3. ^ a b c d Central Museum of the Air Force
  4. ^ a b Krasil'shchikov 1991, 143
  5. ^ Shushurin 1938, 13
  6. ^ Shushurin 1938, 16
  7. ^ a b Sheremetev 1959, 21–22
  8. ^ Sheremetev 1959, 40
  9. ^ Sheremetev 1959, 42
  10. ^ a b Krasil'shchikov 1991, 146
  11. ^ Deniz 2004

References[edit]

  • "Antonov Oleg Konstantinovich". Central Museum of the Air Force website. Retrieved 2008-10-06. 
  • Deniz, Tuncay (2004). Turkish Aircraft Production. Munich: Levent Başara. 
  • Krasil'shchikov, Aleksandr Petrovich (1991). Planery SSSR (Gliders of the USSR). Moscow: Moskva Mashinostroyeniye. 
  • Sheremetev, Boris Nikolayevich (1959). Planery (Gliders). Moscow: DOSAAF. 
  • Shushurin, V.V. (1938). Atlas konstruktzii planerov (Directory of glider construction). Moscow: Gosudarstvennoe izdatel'stvo oboronnoi promyshlennosti.