Role Biplane flying boat
National origin USSR
Manufacturer Grigorovich Design Bureau
Designer Dmitri Grigorovich
First flight Failed to fly
Primary user Soviet Naval Aviation
Number built 1
Developed from Grigorovich M-9

The Grigorovich M-23bis was a Soviet biplane flying boat built during the 1920s.

Design

Dmitri Grigorovich developing the M-23 as a derivative of the Grigorovich M-9 with a more powerful engine. The first M-23 design was abandoned after the revolution and transformed into an improved design, the M-23bis, in 1922. The aircraft was completed at GAZ-3 "Krasnyj Letchik" (The Red Pilot) in mid-Summer 1923, but the unsuccessful hull shape meant that it failed to take off. The M-23bis was sent back for modifications, but in late 1923 was destroyed by a flood at the Krestovsky Island hangar.[1]

Specifications (M-23bis)

Data from Aircraft of the Soviet Union : the encyclopaedia of Soviet aircraft since 1917,[2] Russian Aviation Museum : M-23[3]

General characteristics

  • Crew: 2
  • Length: 8.7 m (28 ft 7 in)
  • Wingspan: 12.5 m (41 ft 0 in)
  • Wing area: 45.8 m2 (493 sq ft)
  • Empty weight: 1,165 kg (2,568 lb)
  • Gross weight: 1,615 kg (3,560 lb)
  • Powerplant: 1 × Fiat A.12 6-cylinder water-cooled in-line piston engine, 210 kW (280 hp)
  • Propellers: 2-bladed fixed-pitch pusher propeller

Performance

  • Maximum speed: 165 km/h (103 mph, 89 kn) estimated
  • Wing loading: 35 kg/m2 (7.2 lb/sq ft)

References

  1. ↑ Shavrov, V.B. (1994). Istoriia konstruktskii samoletov v SSSR, 1938–1950 (in Russian) (gg. (3 izd.) ed.). Moscow: Mashinostroenie. p. 350. ISBN 978-5-217-00477-5.
  2. ↑ Gunston, Bill (1983). Aircraft of the Soviet Union : the encyclopaedia of Soviet aircraft since 1917. Osprey. p. 91. ISBN 085045445X.
  3. ↑ "M-23, D.P.Grigorovich". ram-home.com. Retrieved 2 February 2019.

Bibliography

  • Kulikov, Victor (December 1996). "Le fascinante histoire des hydravions de Dimitry Grigorovitch" [The Fascinating History of the Seaplanes of Dimitry Grigorovitch]. Avions: Toute l'aéronautique et son histoire (in French) (45): 20–33. ISSN 1243-8650.
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