| Technical data | ||
|---|---|---|
| Type | SM-62bis | MBR-4 |
| Function | Maritime Reconnaissater | |
| Year | 1930 | 1933 |
| Crew | 3 | 3 |
| Engines | 1*750hp Izotta-Frascini Asso | |
| Length | 12.6m | 12.6m |
| Wingspan | 16.6m | 16.6m |
| Wing area | 69.52m2 | 69.52m2 |
| Empty weight | 2640kg | 2840kg |
| Loaded weight | 4100kg | 4300kg |
| Wing Load (kg/m2) | 59.0 | 62.0 |
| Power load (kg/hp) | 5.5 | 5.7 |
| Speed at 0m | 225km/h | 220km/h |
| Cruising Speed | 180km/h | 180km/h |
| Landing Speed | 90km/h | 90km/h |
| Range | 920km | 900km |
| Flight Endurance | 4.0h | 4.0h |
| Ceiling | 4000m | 4300m |
| Climb | ||
| 1000m | 4min | 4min |
| 2000m | 9min | 10min |
| 3000m | 17min | 19min |
| Armament | ||
| Guns | 2*mg | 2*mg |
MBR-4, SM-62bis by Sovoia-Marchetti
Italian Sovoia-Marchetti S-62bis biplane flying boat, built in Taganrog. Three-seater, with rear gunner position right behind pusher propeller.
Fifty one were built, production was limited by number of engines purchased. First five vere built without blueprints, simply by measuring and copying the original. First of those planes was tested on April 8, 1932 and not accepted for service.
Once blueprints became available, aircraft was designated MBR-4. First 22 were exact copy of the SM-62bis, the rest were modified (structurally) to accommodate more domestic materials. Modified aircraft were designated MBR-4, performance was identical to the SM-62bis. Trials in January 1935 resulted in positive conclusion. Production was limited due to obvious obsolete of the type. Service career of the MBR-4 was short (some 1.5 years), but in 1936- 1937 another small batch (15 aircraft) was built af Factory N°31 under designation MTB-1 (do not mistake it for A.N.Tupolev ANT-27bis).
In service until 1936, when this type was replaced by MBR-2.
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