Grigorovich DG-53
The Grigorowitsch DG-53 ( Russian Григорович ДГ-53 , also Grigorowitsch IP-4 , ИП-4) is a single-seat, single - engine low - wing fighter aircraft of Soviet origin. It is a smaller modification of the Grigorowitsch DG-52 with a self-supporting aluminum cell, two-spar wing with an elliptical wing outline and retractable rear wheel landing gear. Like the DG-52, the DG-53 was made entirely of metal, with the exception of the fabric-covered oars.
Instead of the 76 mm APK-4 cannon, a total of four 45 mm APK-11, reinforced by two SchKAS , were provided as armament. The machine was one with a NACA-hood -clad Wright R-1820 driven Cyclone engine with 640 hp and first flew in 1934. It remained at this a prototype.
When the development of recoilless weapons was discontinued, the machine was converted to the DG-53bis. The armament should now consist of SchWAK and two SchKAS . Shortly before the machine was completed in 1935, the project was stopped.
Technical specifications
| Parameter | Data |
|---|---|
| span | 9.60 m |
| length | 7.08 m |
| Wing area | 16.36 m² |
| Empty mass | 1080 kg |
| Takeoff mass | 1549 kg |
| Top speed | 435 km / h at 3000 altitude |
| Take-off / landing speed | 97 km / h |
| Climb performance | 1 min 6 s up to 1000 m |
| Service ceiling | 8300 m |
| Range | 830 km |
| drive | 1 × Wright R-1820 |
| power | 471 kW (640 hp) |
| Armament | 2 × 7.62 mm SchKAS and 4 × 45 mm APK-11 |