Captured Beriev MBR-2M-34 in Finnish service
|Type:||Multipurpose flying boat|
May 3, 1932
|Number of pieces:||
The Beriev MBR-2 ( Russian Бериев МБР-2 , NATO code name Mote ) was a Soviet reconnaissance and multi-purpose flying boat . A civil version existed as MP-1 (МП-1). The abbreviation MBR means Morskoi blischni raswedtschik (Морской ближний разведчик, naval close-up reconnaissance aircraft). MP stands for Morskoi passaschirski samoljot (Морской пассажирский самолет, maritime passenger aircraft).
The basic design of this easy to operate and maintain, powerful and robust multi-purpose flying boat for use in the Soviet coastal waters was completed by Georgi Beriev in 1931 at the Mensinsky plant in Taganrog . I. W. Ostolawski, M. P. Mogilewski and A. N. Dobrowolski contributed to the construction.
The construction of the prototype was completed by the end of 1931. For testing it was dismantled, transferred to Sevastopol and reassembled there. However, the testing could not be started because the delivery of the M-27 engine intended for installation was delayed, which had been in the test phase since 1929 and suffered from all sorts of teething problems. Finally, after several months of waiting, a BMW VI.Z engine was used, with which B. L. Bucholz was able to carry out the maiden flight on May 3, 1932. The subsequent tests were satisfactory, but initially no series order was placed. The MBR-2 was only released for production in March of the following year, which started at the end of 1933. The series aircraft initially received the M-17b engine built as a license for the BMW VI . At the same time, the civilian version MP-1 appeared.
In 1936/37 the improved and more powerful further developments MBR-2bis and MP-1bis with Mikulin-AM-34 engine, closed cabin, closed rear armament and modified vertical stabilizer were made.
The possibility of attaching snow and ice runners or a chassis gave the MBR-2 a distinctive multi-purpose character.
The first MBR-2 were delivered in late 1933 and used in the Black Sea Fleet . The aircraft was mainly used as a close-up reconnaissance aircraft in the Soviet Navy until 1943 and was produced until 1942.
The derived civil version MP-1 was used as a commercial flying boat from 1934. In the six-seater passenger version, it had two soundproofed and heated cabins for three people each. It was mainly used by Aeroflot on coastal routes on the Black Sea. The transport version MP-1T followed in 1935 .
The version with the AM-34 engine was produced until 1942 and used in the war . The aircraft with the AM-34N engine was used as a civil version.
After their retirement, numerous MBR-2s were used for a long time as multi-purpose and fisheries surveillance aircraft in the civilian sector.
The MBR-2 was a cantilevered shoulder-decker in both mixed and all-metal construction with a normal tail unit and had a spacious, two-tier hull boat. The pilots sat next to each other in an open cockpit that was closed in later versions. In addition, an uncovered weapon stand was attached in the bow and on the fuselage and each equipped with a 7.62 mm MG PW-1 , later the DA-2 was also used and the central weapon stand was closed. The elevator was braced.
|crew||3–4 (for MBR-2WU: 5)|
|Wing area||26.85 m²|
|drive||MBR-2: a 12-cylinder in- line engine M-17
MBR-2bis: a 12-cylinder in-line engine AM-34F or AM-34N
freestanding above the wing
|power||MBR-2: 530–633 kW (720–860 hp)
MBR-2bis: 607–633 kW (825–860 hp)
|Starting power||515–552 kW (700–750 hp)|
|Fuel supply||540 l in the hull, plus reserve and additional containers in the central float|
|Top speed||285 km / h at an altitude of 2000 m|
|Marching speed||225 km / h at an altitude of 2000 m|
|Rate of climb||230 m / min|
|Service ceiling||normal 6600 m
maximum 7600 m
|Range||normal 1450 km
maximum 2200 km
|Radius of action||600 km|
|Flight duration||8 h at 180 km / h|
|Empty mass||2100 kg|
|Takeoff mass||normal 3500 kg
maximum 4000 kg
|Armament||two to four 7.62 mm machine guns in two command posts in the bow and back of the fuselage with a
bomb load of up to 600 kg
- Rudolf Höfling: Beriev. Since 1934 . Motorbuch, Stuttgart 2017, ISBN 978-3-613-04025-0 , p. 15th ff .
- Olaf Groehler : History of the Air War 1910 to 1980 . Military Publishing House , Berlin 1981.
- Ulrich Israel: Flying Boats of the Second World War . German military publisher , Berlin 1972.
- Kenneth Munson: Bomber, Reconnaissance and Transport Aircraft 1939–45 . Orell-Füssli, Zurich 1970.
- Ulrich Israel: Flying Boats of the Second World War . In: Wolfgang Sellenthin (Ed.): Deutscher Fliegerkalender 1969 . German military publisher , Berlin 1968.
- Бериев МБР-2. Retrieved November 9, 2017 (Russian, history, dates, and photos).
- according to Kenneth Munson: Bomber, Patrouillen- und Transportflugzeuge 1939–45 , Orell Füssli Verlag, Zurich, 3rd edition 1977, p. 101 4–5 crew members
- Höfling, Berijew, p. 18
- cf. Kenneth Munson: Bomber, Patrol and Transport Aircraft 1939–45 , Orell Füssli Verlag, Zurich, 3rd edition 1977, p. 101