Grigorovich M-3
| Grigorovich M-3 | |
|---|---|
| Type: | Flying boat |
| Design country: | |
| Manufacturer: | |
| First flight: |
1914 |
| Number of pieces: |
1 |
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The Grigorowitsch M-3 ( Russian Григорович М-3 , also Shchetinin Shch -3 (Щетинин Щ-3), after the manufacturing plant in Saint Petersburg , Schetinin) is a single-engine flying boat of Russian origin.
Except for changes to the wing profile, it corresponds to the Grigorowitsch M-2. The two-seater aircraft was built using a composite construction. The pilots were seated next to each other. It was first powered by a Gnôme Monosoupape engine of 100 hp, which drove a pusher propeller. Support floats are located at the end of the lower wing for stabilization on the water. Compared to the M-2, the flight characteristics were significantly better, but the seaworthiness could not convince. Take-off and landing was practically only possible safely in mirror-smooth water. Only a test model was built.
Technical specifications
| Parameter | Data |
|---|---|
| span | 13.68 m |
| length | 8.0 m |
| Wing area | 33.5 m² |
| Takeoff mass | 870 kg |
| Engine | Gnome monosoupape |
| power | 74 kW (100 PS) |