Grigorovich MR-5

The Grigorovich MR-5 was a long-range reconnaissance flying boat designed by the Grigorovich Design Bureau for the Soviet Navy in the late 1920s.

MR-5
Role Reconnaissance flying boat
Designer Dmitry Pavlovich Grigorovich
First flight July 1929
Primary user Soviet Navy
Number built 1
Developed from Grigorovich MR-2

Design

The MR-5 was similar to the MR-2 in layout, armament, and payload, but had a more powerful BMV VI engine and an all-metal hull. Flight tests were conducted in Taganrog beginning in July 1929, and although the aircraft behaved well in the air, takeoff was sluggish.[1]

Specifications

Data from [2]

General characteristics

  • Crew: 2
  • Length: 11.4 m (37 ft 5 in)
  • Wingspan: 15.6 m (51 ft 2 in)
  • Wing area: 53.0 m2 (570 sq ft)
  • Empty weight: 2,027 kg (4,469 lb)
  • Max takeoff weight: 3,082 kg (6,795 lb)
  • Powerplant: 2 × BMV VI V-cylinder inline engine, 372 kW (499 hp) each

Performance

  • Maximum speed: 194 km/h (121 mph, 105 kn)
  • Endurance: 4 hours
  • Service ceiling: 4,000 m (13,000 ft)
  • Time to altitude: 1,000 m (3,281 ft) in 7.0 minutes[3]
  • Wing loading: 58.2 kg/m2 (11.9 lb/sq ft)

Armament

  • Guns: 1-2 x machine guns
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References
  1. Шавров, В. Б. История конструкций самолётов в СССР до 1938. - М .: Машиностроение, 1988. - ISBN 5-217-03112-3. pp.403-404
  2. Grigorovich MR-5
  3. Gunston, Bill (1983). Aircraft of the Soviet Union : the encyclopaedia of Soviet aircraft since 1917. Osprey. p. 92. ISBN 978-0850454451.

Sources
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