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Beriev MBR-2
Beriev MBR-2
	Aeroflot MP-1 at Yalta, circa 1938.
General information
Type	Patrol aircraft
Manufacturer	Beriev OKB
Designer	Georgy Mikhailovich Beriev
Status	Out of production; retired
Primary user	Soviet Navy
Number built	1,365
History
Manufactured	1934-1941
Introduction date	1935
First flight	1931

The Beriev MBR-2^[1] was a Soviet multi-purpose (including reconnaissance) flying boat which entered service with the Soviet Navy in 1935. Out of 1,365 built, nine were used by foreign countries (including Finland and North Korea). In the Soviet Union, it sometimes carried the nickname of "Kорова" (cow) and "Амбар" (barn).^[2]

Design

The MBR-2 was designed by Georgy Mikhailovich Beriev and first flew in 1931, powered by an imported 373 kW (500 hp) BMW VI.Z engine. Production models, which arrived in 1934, used a licence-built version of this engine, the Mikulin M-17 of 508 kW (680 hp), and could be fitted with a fixed wheel or ski undercarriage.

Beriev also designed a commercial airliner derivation, the MP-1, which entered airline service in 1934, and a freighter version, which followed in 1936.

In 1935, an improved version was developed, the MBR-2bis, powered by the Mikulin AM-34N engine, and fitted with an enclosed cockpit, dorsal gun-turret and enlarged vertical tail. In this configuration, the machine remained in production until 1941. As with the MBR-2, the bis spawned a commercial derivative and the MP-1bis entered service in 1937.

Variants

MBR-2M-17 : Short-range maritime reconnaissance, bombing flying-boat, powered by a 508 kW (680 hp) Mikulin M-17B piston engine.
MBR-2AM-34 or MBR-2bis : Improved version, powered by a Mikulin AM-34N engine.
MBR-2M-103 : One MBR-2AM-34 was fitted with the more powerful M-103 engine. One prototype only.
MP-1 : Civil version of the MBR-2M-17 flying-boat. It could carry six passengers in an enclosed cabin.
MP-1bis : Civil version of the MBR-2AM-34 flying-boat.
MP-1T : Freight transport conversion of MBR-2.

Operators

Finland

The Finnish Air Force operated five captured aircraft from 1941.

Soviet Union

North Korea

North Korean Air Force

Specifications (MBR-2 AM-34)

Data from L'hydroaviation MBR-2, pillier de la reconnaissance naval soviétique^[3]

General characteristics

Crew: 4-5^[4]
Length: 13.50 m (44 ft 3 in)
Wingspan: 19.00 m (62 ft 4 in)
Height: 5.00 m (16 ft 5 in)
Wing area: 55 m² (590 sq ft)
Airfoil: root: MOS-27 (18%); tip: MOS-27 (10%)^[5]
Empty weight: 2,718 kg (5,992 lb)
Gross weight: 4,245 kg (9,359 lb)
Powerplant: 1 × Mikulin AM-34NB V-12 liquid-cooled piston engine, 620 kW (830 hp)

Performance

Maximum speed: 275 km/h (171 mph, 148 kn) at 5,000 m (16,000 ft)
Cruise speed: 190 km/h (120 mph, 100 kn)
Range: 1,600 km (990 mi, 860 nmi)
Service ceiling: 6,000 m (20,000 ft)

Armament

Guns:
- 1× 7.62 mm (0.30 in) PV-1 machine gun in bow
- 1× 7.62 mm ShKAS machine gun in dorsal turret
Bombs:

300 kg (660 lb) of bombs, mines, and depth charges carried underwing^[4]

References

^ MBR stands for its Russian role - Morskoi Blizhniy Razvedchik (Cyrillic: Морской Ближний Разведчик) "Naval Short Range Reconnaissance".
^ Bogatko, Sergei. Recce's of tradeways
^ Kulikov Avions September 1998, p. 28
^ ^a ^b Green 1968, p. 140
^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Bibliography

Green, William (1968). War Planes of the Second World War, Volume Five, Flying Boats. London: Macdonald & Co. (Publishers) Ltd. ISBN 0-356-01449-5.
Kulikov, Victor (September 1998). "L'hydroaviation MBR-2, pillier de la reconnaissance naval soviétique" [The Seaplane MBR-2, Pillar of Soviet Naval Reconnaissance]. Avions: Toute l'aéronautique et son histoire (in French). No. 66. pp. 22–29. ISSN 1243-8650.
Munson, Kenneth (1969). Bombers, Patrol and Transport Aircraft 1939-45. Blandford. ISBN 0-7137-0379-2.