Grigorovich MR-2

MR-2
Role	Reconnaissance flying boat Type of aircraft
Designer	Dmitry Pavlovich Grigorovich
First flight	23 September 1926
Primary user	Soviet Navy
Number built	1

The Grigorovich MR-2 was a long-range reconnaissance flying boat designed by the Grigorovich Design Bureau for the Soviet Navy in the late 1920s.

Design

The MR-2 was similar to the MRL-1 but had a more powerful engine and larger upper wing, while the hull design was improved and less expensive materials used in its construction. Flights beginning in September 1926 impressed the MR-2's designers, and state acceptance trials were carried out by VVS pilot F.S.Rastegaev. One flight on October 19, however, ended in disaster when the MR-2 lost stability, and longitudinal oscillations with increasing amplitude resulted in steep dive, causing the aircraft to crash into the water up-side-down.^[1]

Specifications

Data from ^[2]

General characteristics

Crew: 2
Length: 13.6 m (44 ft 7 in)
Wingspan: 15.6 m (51 ft 2 in)
Wing area: 56.7 m² (610 sq ft)
Empty weight: 1,770 kg (3,902 lb)
Gross weight: 2,770 kg (6,107 lb)
Powerplant: 1 × Lorraine-Dietrich 12E W-12 water-cooled piston engine, 340 kW (450 hp)

Performance

Maximum speed: 179 km/h (111 mph, 97 kn)
Endurance: 5 hours
Service ceiling: 4,200 m (13,800 ft)
Time to altitude: 1,000 m (3,281 ft) in 7.0 minutes
Wing loading: 49.0 kg/m² (10.0 lb/sq ft)

Armament

Guns: 1-2 x machine guns

References

^ Shavrov, Vadim Borisovich (1988). Istorii︠a︡ konstrukt︠s︡iĭ samoletov v SSSR do 1938 g. (in Russian) (Izd. 5-e, ispr ed.). Moscow: Mashinostroenie. ISBN 5-217-03112-3.
^ "MR-2 by D.P.Grigorovich". Ram-home.com. 1998-07-28. Retrieved 2019-02-03.

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.

v t e Grigorovich aircraft
M-1 M-2 M-3 M-4 M-5 M-6 M-7 M-8 M-9 M-10 M-11 M-12 M-13 M-14 M-15 M-16 M-17 M-18 M-19 M-20 M-21 M-22 M-23 M-24 GASN ROM-1 ROM-2 MK-1 MRL-1 MR-2 MR-3 MR-5 MUR-1 MU-2 MUR-2 I-1 I-2 I-Z IP-1 IP-2 IP-4 E-2 SUVP TB-5 TSh-1 TSh-2 LK-1 PB-1

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)	MR-1 MR-2 MR-3 (I) MR-3 (II) MR-4¹ MR-5 (I) MR-5 (II) MR-6
Short-range scout seaplane (MBR)	MBR-1 MBR-2 MBR-3 MBR-4 MBR-5 MBR-6¹ MBR-7
Long-range scout seaplane (MDR)	MDR-1 MDR-2 MDR-3 MDR-4 MDR-5 MDR-6 MDR-7 MDR-8¹ MDR-9¹ MDR-10
Open-sea scout seaplane (ROM)	ROM-1 ROM-2
Descriptors	Long-range reconnaissance seaplane torpedo bomber MDRT
¹ Unknown/not assigned

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