Kalinin K-12

The Kalinin K-12 was a proof-of-concept aircraft developed by the Kalinin Design Bureau in the 1930s.

K-12
Role Tailless bomber
National origin Soviet Union
Manufacturer OKB Kalinin
First flight July 1936
Number built 1 (10 incomplete production aircraft)

Design and development

The K-12 was intended as a tailless bomber aircraft. Also called the Kalinin BS-2 or the Zhar-Ptitsa ("Firebird"), it featured welded steel-tube construction with fabric covering, as well as a dummy nose and tail turrets. The K-12 was painted in a garish color scheme representing a bird. A subscale glider to test the K-12's features flew in 1934, piloted by V.O. Borisov. The K-12 flew in autumn 1936 and was demonstrated at Tushino in August 1937. The full-size K-12, however, was cancelled after Konstantin Kalinin was arrested and executed as an enemy of the state.[1][2][3]

Specifications

Data from [1]

General characteristics

  • Crew: 3
  • Length: 8 m (26 ft 3 in)
  • Wingspan: 18 m (59 ft 1 in)
  • Wing area: 72.75 m2 (783.1 sq ft)
  • Empty weight: 3,070 kg (6,768 lb)
  • Gross weight: 4,200 kg (9,259 lb)
  • Powerplant: 2 × Shvetsov M-22 9-cylinder air cooled radial engine, 324 kW (435 hp) each
  • Propellers: 2-bladed metal variable-pitch propeller

Performance

  • Maximum speed: 240 km/h (150 mph, 130 kn)
  • Service ceiling: 7,170 m (23,520 ft)
  • Take-off distance: 700 m (2,300 ft)
  • Landing distance: 300 m (980 ft)

Armament

  • Guns: 2x 7.62 mm (0.300 in) ShKAS machine guns in nose and tail turrets.
  • Bombs: 500 kg (1,100 lb) bomb load in a vertical rack
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References
  1. Rose, Bill (1 March 2010). Flying wings and tailless aircraft. Crecy Publishing. pp. 134–135. ISBN 978-1857803204.
  2. "K-12 (VS-2), Kalinin". ram-home.com. Retrieved 1 March 2019.
  3. Russ, Daniel (18 December 2010). "Kalinin K-12". Civilian Military Intelligence Group. Retrieved 1 March 2019.

Further reading
  • В. Б. Шавров: История конструкций самолетов в СССР до 1938. S. 416.


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