Yakovlev AIR-6

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AIR-6
Role Light utility aircraft
National origin Soviet Union
Manufacturer Yakovlev
Designer Alexander Sergeyevich Yakovlev
First flight 1932
Introduction 1934
Number built 128
Developed from Yakovlev AIR-5

The Yakovlev AIR-6 was a Soviet light utility aircraft of the 1930s. It was a single-engined high winged monoplane designed by Alexander Sergeyevich Yakovlev, which was ordered into production, over 100 being built.

Design and development[edit]

In 1932, the Soviet aircraft designer Alexander Sergeyevich Yakovlev, working as an engineering supervisor at the Polikarpov OKB, designed the AIR-5,[nb 1] a five-seat high-winged monoplane with a steel-tube fuselage and a wooden wing, powered by an American Wright J-4 Whirlwind radial engine giving 149 kW (200 hp). Although the AIR-5 successfully passed State acceptance trials, no production followed, as there was no suitable Soviet replacement for the imported engine.[2][3]

Yakovlev instead designed a scaled-down aircraft of similar layout to the AIR-5, but powered by a readily available 75 kW (100 hp) Shvetsov M-11 engine, to serve as a light utility aircraft. The new design, the AIR-6, was a high-winged monoplane using much of the structural design of the AIR-5, (and also featuring landing struts from the Polikarpov U-2 and tail surfaces from the Tupolev I-5 fighter), with a pilot and one or two passengers sitting in tandem in an enclosed cockpit.[4][5]

Operational history[edit]

The prototype AIR-6 flew in 1932, passing state acceptance trials in October 1933.[6] An accident with the Yakovlev AIR-7 sport aircraft, however, was blamed on a design error by Yakovlev, who was sacked from the Polikarpov design bureau.[7] This caused production plans to be delayed until Yakovlev was allowed to set up his own design bureau, with production starting in 1934. A total of 128 AIR-6s were built, with several being fitted with floats, and 20 equipped as specialist ambulance aircraft.[8]

Operators[edit]

 Soviet Union

Specifications[edit]

Data from OKB Yakovlev[9]

General characteristics

  • Crew: 1
  • Capacity: 1 or 2 passengers
  • Length: 7.8 m (25 ft 7 in)
  • Wingspan: 12.08 m (39 ft 8 in)
  • Wing area: 19.8 m2 (213 sq ft)
  • Empty weight: 616 kg (1,358 lb)
  • Gross weight: 961 kg (2,119 lb)
  • Powerplant: 1 × Shvetsov M-11 five-cylinder radial engine, 75 kW (100 hp) [10]

Performance

  • Maximum speed: 168.5 km/h (105 mph; 91 kn)
  • Cruising speed: 130 km/h (81 mph; 70 kn)
  • Range: 715 km (444 mi; 386 nmi)
  • Service ceiling: 4,600 m (15,092 ft)
  • Time to altitude: 6.6 min to 1,000 m (3,300 ft)

Notes[edit]

  1. ^ Early Yakovlev designed aircraft were designated AIR in honour of Alexei Rykov, the Chairman of the Council of People's Commissars[1]

Citations[edit]

  1. ^ Gunston 1995, p. 451.
  2. ^ Gunston 1995, pp. 451, 453–454.
  3. ^ Gordon, Komissarov and Komissarov 2005, pp. 23–23.
  4. ^ Gunston 1995, p. 454.
  5. ^ Gordon, Komissarov and Komissarov 2005, p. 24.
  6. ^ Gordon, Komissarov and Komissarov 2005, pp. 24–25.
  7. ^ Gunston 1995, p. 455.
  8. ^ Gordon, Komissarov and Komissarov 2005, pp. 25–26.
  9. ^ Gordon, Komissarov and Komissarov 2005, p. 26.
  10. ^ Gunston 1995, pp. XX–XXI.

References[edit]

  • Gordon, Yefim, Dmitry Komissarov and Sergey Komissarov. OKB Yakovlev: A History of the Design Bureau and its Aircraft. Hinkley, UK: Midland Publishing, 2005. ISBN 1-85780-203-9.
  • Gunston, Bill. The Osprey Encyclopedia of Russian Aircraft 1975–1995. London: Osprey, 1995. ISBN 1-85532-405-9.