Beriev MBR-7
| Beriev MBR-7 (MS-8) | |
|---|---|
| Type: | Reconnaissance flying boat |
| Design country: | |
| Manufacturer: | |
| First flight: |
April 1939 |
| Commissioning: |
only prototype |
| Number of pieces: |
1 |
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The Beriev MBR-7 ( Russian Бериев МБР-7 , also Beriev MS-8 , МС-8) is a single-engine flying boat in shoulder- wing design of the Soviet design office Beriev . The first flight took place in April 1939.
development
The machine was made entirely of wood . The motor, which drove a metal pusher propeller WISch-2PT, was on struts above the wing. Support floats were installed under the wing.
The deployment should take place as an armed short sea scout. The armament consisted of a SchKAS machine gun in a mount behind the wing and a rigidly forward-pointing machine gun, each with a caliber of 7.62 mm. Furthermore, a total of 500 kg of drop armament could be carried. The MBR-7 was supposed to replace the older Beriev MBR-2 .
The flight performance was very appealing. At the end of October 1939 there was an accident in which the machine was largely destroyed. The reason was the insufficient flight stability at low speeds. Due to these constant difficulties during takeoff and landing, no series production was started.
Technical specifications
| Parameter | Data |
|---|---|
| length | 10.60 m |
| span | 13.00 m |
| Wing area | 26.00 m² |
| Empty mass | 2418 kg |
| Takeoff mass | maximum 3600 kg |
| drive | a water-cooled V-12 engine Klimow M-103 |
| power | 625 kW (850 PS) close to the ground 706 kW (960 PS) at an altitude of 4000 m |
| Top speed | 310 km / h near the ground 376 km / h at 4300 m |
| Landing speed | 125 km / h |
| Range | normal 720 km maximum 1215 km |
| Service ceiling | 8850 m |
| Rise time | 2.4 min at 1000 m altitude 7.9 min at 4000 m altitude 25 min at 8000 m altitude |
| crew | 2-3 |
