Beriev MDR-5
| Beriev MDR-5 | |
|---|---|
|
|
| Type: | Flying boat |
| Design country: | |
| Manufacturer: | |
| First flight: |
May 1938 |
| Number of pieces: |
2 |
.svg){kind=small}
The Berijew MDR-5 ( Russian Бериев МДР-5 , also Berijew MS-5 , МС-5) is a twin-engine airplane boat in Hochdecker -design the Soviet manufacturer Berijew . The first flight took place in May 1938 .
development
The motors, which each drove a WISch-3 metal propeller, were located on the leading edge of the wing under NACA hoods . Support floats were installed under the wing. The wing itself was attached to the fuselage with struts. The machine and the wing were made of metal, only a flap and rudder were covered with fabric.
The deployment should take place as an armed long-range sea reconnaissance. The armament consisted of three SchKAS machine guns caliber 7.62 mm. Furthermore, a total of 1000 kg of drop armament could be carried.
Two machines were built in 1938, a second as an amphibious aircraft . During the tests, the machine turned out to be unseaworthy. The landing gear was removed again and the bow of the fuselage was lengthened about 30 cm.
The flight performance was good, but the range for a maritime patrol was insufficient. The reason was the high curb weight of the machine. Instead, the Tschetwerikow MDR-6 was put into series production.
The machines were used for transport purposes until 1943.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 5 |
| length | 15.88 m |
| span | 25.00 m |
| Wing area | 78.5 m² |
| Empty mass | 6038 kg |
| Takeoff mass | 8000 kg |
| drive | two M-87 radial engines |
| power | 618 kW (840 PS) 700 kW (950 PS) takeoff power |
| Top speed | near the ground: 283 km / h at 5250 m: 345 km / h |
| Landing speed | 120 km / h |
| Climb performance | up to 1000 m: 3.6 min up to 5000 m: 21 min |
| Service ceiling | 8150 m |
| Range | 2415 km |
