Grigorovich MR-5

1920s Soviet reconnaissance flying boat
MR-5
Role Reconnaissance flying boat
Type of aircraft
Designer Dmitry Pavlovich Grigorovich
First flight July 1929
Primary user Soviet Navy
Number built 1
Developed from Grigorovich MR-2

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.

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: 235 km/h (146 mph, 127 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[4]
  • Wing loading: 58.2 kg/m2 (11.9 lb/sq ft)

Armament

  • Guns: 1-2 x machine guns

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. ^ Lawrence 1945, p. 185.
  4. ^ Gunston, Bill (1983). Aircraft of the Soviet Union : the encyclopaedia of Soviet aircraft since 1917. Osprey. p. 92. ISBN 978-0850454451.

Bibliography

  • Lawrence, Joseph (1945). The Observer's Book Of Airplanes. London and New York: Frederick Warne & Co.

Sources

  • v
  • t
  • e
Soviet scout aircraft designations, 1923–1940
Scout (R)
  • R-1
  • R-2
  • R-3
  • R-4 (I)
  • R-4 (II)
  • R-5
  • R-6
  • R-7
  • R-81
  • R-9
  • R-10
  • R-111
  • R-12
  • R-Z
Shipboard scout (KR)
  • KR-1
  • KR-2
Cruiser scout (KR)
  • KR-11
  • KR-21
  • KR-31
  • KR-41
  • KR-51
  • KR-6
Shipboard catapult-scout (KOR)
  • KOR-1
  • KOR-2
  • KOR-3
Scout seaplane (MR)
Short-range scout seaplane (MBR)
Long-range scout seaplane (MDR)
Open-sea scout seaplane (ROM)Descriptors
  • Long-range reconnaissance seaplane torpedo bomber MDRT
1 Unknown/not assigned
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Grigorovich aircraft