| Technical data | |
|---|---|
| Type | MUR-1 |
| Function | Trainer flying boat |
| Year | 1926 |
| Crew | 2 |
| Engines | 1*120hp Rhone (M-2) |
| Length | 8.0m |
| Wingspan | 11.5m |
| Wing area | 33.0m2 |
| Empty weight | 700kg |
| Loaded weight | 1000kg |
| Wing Load (kg/m2) | 33.3 |
| Power load (kg/hp) | 8.4 |
| Speed at 0m | 129km/h |
| Takeoff Speed | 85km/h |
| Landing Speed | 70km/h |
| Landing Roll | 100m 10sec |
| Takeoff Roll | 130m 12sec |
| Turn time | 20sec |
| Range | 360km |
| Flight Endurance | 3h |
| Ceiling | 3500m |
| Climb | |
| 1000m | 8.0min |
| 2000m | 19min |
| 3000m | 38min |
MUR-1 by D.P.Grigorovich
|
In 1925 Red Air Force had no trainer flying boat. The only aircraft suitable for training naval pilots was the MU-1 floatplane. Performance of this aircraft was far above of available flying boats (M-5 and others).
D.P.Grigorovich decided to improve the M-5 by installing more powerful engine, replacing the wing with thicker one and strengthening tail structure. Speed was increased, but other characteristics suffered. Increased weight of the tail structure demanded to carry up to 32kg of a 'dead weight' in the nose. Even with this fix, MUR-1 was unsuitable as a trainer.
Flights during Fall-Winter 1926 (pilot T.S.Zhukov) proved that modifications of old designs can not provide positive results. Radically new design was needed to obtain high performance flying boat.
| Predecessors | Modifications | |
|---|---|---|
 M-5 M-20 |
MUR-2 | MU-2 |
| References | Links |
|---|---|
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