Sukhoi Su-47
| Sukhoi Su-47 Berkut | |
|---|---|
_in_2001.jpg) The Berkut at the MAKS 2001 Airshow |
|
| Type: | Prototype of an air superiority fighter |
| Design country: | |
| Manufacturer: | |
| First flight: |
September 25, 1997 |
| Commissioning: |
Never put into service |
| Production time: |
Was never mass-produced |
| Number of pieces: |
2 (+1 airworthy) |
The Sukhoi Su-47 Berkut ( Russian Сухой Су-47 Беркут , German Golden Eagle , NATO code name : Firkin ) is an experimental aircraft for a highly maneuverable air superiority fighter for the Russian air force . The machine initially had the designation S-37 in the factory and is based on the Suchoi Su-27 .
history
The project began in the 1970s under the designation I-90 and resulted in the experimental projects S-37 from Sukhoi and MiG 1.44 from Mikojan-Gurevich . From the S-37, the Su-47 with negative swept wings, similar to the American Grumman X-29 , emerged.
The advantage of the negative sweep of the wings is better maneuverability, higher possible angles of attack due to greater lift and a low demolition speed. The problem of high torsional forces is countered by using composite materials .
On September 25, 1997, the S-37, which was often incorrectly referred to as the Su-37 or S-47, took off for its maiden flight. It was equipped with the series Solowjew D-30F-6 engines of the MiG-31 and later, in series production, was to receive better engines with thrust vector control . The engine inlets are noticeably large and are supplemented by additional side inlets on the fuselage. A rear-facing radar and a catch hook are installed at the stern .
In 2001 the aircraft received the official designation Su-47. Experience with the Su-47 was used in the development of the Sukhoi Su-57 .
At the MAKS Airshow 2001, the Su-47 was shown to the public in flight. At the MAKS Airshow 2019, the Su-47 was exhibited in the Static Display, giving the general public the opportunity to see the machine up close for the first time.
Technical specifications
_169_(cropped).jpg)
| Parameter | Data |
|---|---|
| length | 22.60 m |
| span | 15.16 m |
| height | 6.30 m |
| Wing area | 61.87 m² |
| Wing extension | 3.71 |
| Wing loading |
|
| Empty mass | 16,375 kg |
| Max. Takeoff mass | approx. 34,000 kg |
| Top speed |
|
| Service ceiling | approx. 18,000 m |
| Rate of climb | 233 m / s |
| Range | approx. 3,300 km |
| Engine | two turbofan engines Solovyov D-30 F-6 |
| Thrust |
|
| Thrust-to-weight ratio |
|
| Armament | a 30 mm automatic cannon GSch-301 with 150 rounds |
