Grigorovich IP-1
Grigorovich Design Bureau · Soviet Union · first flew 1935 · fighter
The Grigorovich IP-1 (Istrebitel Pushechny, 'cannon fighter') was a fighter aircraft produced in the Soviet Union in the 1930s by the Grigorovich Design Bureau. It was an all-metal monoplane with an open cockpit.
Recognition (WEFT)
| W — Wings | Low-mounted, elliptical |
|---|---|
| E — Engines | 1 × piston, nose-mounted |
| F — Fuselage | 7.23 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- All-metal low-wing monoplane with a nearly elliptical cantilever wing
- Open cockpit
- Two cannon mounted under the wings in the prototype concept
It featured retractable wing wheels and a variable-pitch metal propeller, and retractable skis could be fitted for winter use, a first for any Soviet aircraft.
Specifications
- The Grigorovich IP-1 has a length of 7.23 m (24 ft).
- It has a wingspan of 10.97 m (36 ft).
- Its maximum speed is 410 km/h (255 mph).
- Typical crew: 1.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
Development started as the GD-52 in 1934, and it was transferred to the Air Force Research Institute on 12 January 1935 and flown the same day. Like the preceding Grigorovich I-Z it was built around the cannon-fighter concept, with two APK-4 76.2 mm cannon under the wings.
Variants
In 1936 it was decided to replace the APK-4 cannon with two 20 mm ShVAK cannon, and six 7.62 mm ShKAS machine guns were installed, three in each wing. In 1939 eight aircraft were converted to an attack configuration, designated IP-1sh.
Where you'll see it
Production aircraft used the Shvetsov M-25, a licensed copy of the Wright Cyclone. Problems with lateral stability and spin were found after 90 aircraft had been produced, and the IP-1 was soon overshadowed by the Polikarpov I-16. The 21 remaining aircraft were written off as unusable in October 1940.
Related aircraft
- Grigorovich ROM-1
- Grigorovich MR-2
- Grigorovich MUR-1
- Grigorovich MRL-1
- ANF Les Mureaux 180
- Arado Ar 80
- Armstrong Whitworth A.W.35 Scimitar
- Bernard H 110
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