Mikoyan-Gurevich I-225
| Mikoyan-Gurevich I-225 (5A) | |
|---|---|
| Type: | Fighter plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
July 21, 1944 |
| Number of pieces: |
2 prototypes |
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The Mikojan-Gurewitsch I-225 ( Russian Микоян-Гуревич И-225 ), intended serial designation MiG-7, was a Soviet fighter aircraft for high altitudes. She reached a top speed of 726 km / h with full equipment and armament. This makes it the fastest military piston engine aircraft in the USSR after a stripped down special version of the Yak-3 . Only two copies were made.
It was designed as a single-seat low-wing aircraft with trapezoidal wings in a wood-metal composite construction. An AM-42 engine equipped with the TK-300B turbocharger served as the drive . The armament consisted of two SchWAK machine cannons. Since she was supposed to operate at great heights, she was equipped with a pressurized cabin.
Construction work began in 1943 under the project name 5A . The first prototype received an AM-42B engine and flew for the first time on July 21, 1944. However, the testing was delayed because the I-222 and I-224 aircraft built at the same time were being tested and the I-225 after its 15th Flight was damaged. A second prototype was created, equipped with an AM-42FB, whose first flight took place on March 14, 1945. Since at that time there was no longer any interest in piston-powered fighter planes, as the jet propulsion promised better flight performance, the tests with the I-225 were discontinued.
Technical specifications
| Parameter | Data (I-225-02) |
|---|---|
| Constructor (s) | A. G. Brunow |
| Manufacturer | Mikoyan-Gurevich |
| Year of construction (s) | 1944 |
| length | 9.50 m |
| Wingspan | 11.00 m |
| Wing area | 20.40 m² |
| Wing loading | 195 kg / m² |
| drive | a liquid-cooled 12-cylinder V-engine Mikulin AM-42FB with two TK-1A compressors |
| power | 1,620 kW (2,200 PS) take-off power 1,400 kW (1,900 PS) at an altitude of 6,700 m |
| Top speed | 726 km / h at an altitude of 10,000 m, 560 km / h near the ground |
| Rise time | 4.0 min at 5,000 m altitude 8.8 min at 10,000 m altitude |
| Service ceiling | 12,600 m |
| Range | 1,300 km |
| Empty mass | 3,405 kg |
| Takeoff mass | 3,978 kg |
| crew | 1 pilot |
| Armament | two 20 mm MK SchWAK |
literature
- Rudolf Höfling: MiG aircraft since 1939 . Motorbuch, Stuttgart 2011, ISBN 978-3-613-03335-1 .
- Karl-Heinz Eyermann : MiG aircraft . Transpress Verlag for Transport, Berlin 1987, ISBN 3-344-00193-0 .
Individual evidence
- ^ Wilfried Copenhagen : Soviet fighter planes . transpress, Berlin 1985, VLN 162-925 / 145/85.