Aleksandrov-Kalinin AK-1

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AK-1
Единственный АК-1 "Добролет". Ангар. Музей гражданской авиации. Ульяновск. Ноябрь 2013 - panoramio.jpg
Role Airliner
National origin Soviet Union
Manufacturer
Designer Vladimir Leont'evich Aleksandrov
Vladimir Vladimirovich Kalinin
First flight 1 February 1924
Number built 1

The Aleksandrov-Kalinin AK-1 was a prototype airliner built in the Soviet Union in the early 1920s, designed as part of a project by TsAGI to investigate low-cost construction techniques and to verify calculation models for thick-section airfoils. It was a high-wing, strut-braced monoplane of conventional design, powered by a single engine in the nose. Two passengers could be carried in an enclosed cabin in the fuselage, while a separate enclosed cockpit was provided for the pilot, plus a co-pilot or an additional passenger. Construction was wooden throughout.

The aircraft was assembled at the factory during 1923 and flight testing began in February the following year. Money for the project had been donated by the Latvian Riflemen, and the AK-1 was named Латышский стрелок (Latyshskii Strelok - "Latvian Sharpshooter") in recognition of this. Following flight tests, it was handed over to Dobrolyot, who used it on a route between Moscow and Kazan. In 1925, it was used in a propaganda flight from Moscow to Beijing and other Chinese cities, flying 7,000 km (4,300 mi) in 38 days.


Operators[]

 Soviet Union

Specifications[]

General characteristics

  • Crew: one-two pilots
  • Capacity: two-three passengers
  • Length: 11.00 m (36 ft 1 in)
  • Wingspan: 14.90 m (48 ft 11 in)
  • Height: 3.80 m (12 ft 6 in)
  • Wing area: 37.0 m2 (398 sq ft)
  • Empty weight: 1,096 kg (2,411 lb)
  • Gross weight: 1,685 kg (3,707 lb)
  • Powerplant: 1 × Salmson RB.9 water-cooled 9-cylinder radial[1] , 130 kW (170 hp)

Performance

  • Maximum speed: 147 km/h (92 mph, 80 kn)
  • Endurance: 5-6 hours
  • Service ceiling: 2,200 m (7,200 ft)
  • Rate of climb: 1.2 m/s (230 ft/min)

References[]

  1. ^ Gunston (1995)
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 547.
  • Gunston, Bill (1995). The Osprey Encyclopedia of Russian Aircraft 1875-1995. London: Osprey (Reed Consumer Books Ltd). p. 16. ISBN 1 85532 405 9.
  • Уголок неба
  • Russian Aviation Museum
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