Polikarpov I-17
# Polikarpov I-17

The Polikarpov I-17 was a Soviet single-seat fighter prototype designed and built by a team headed by Nikolai Polikarpov at the Central Design Bureau (TsKB) in 1934.

## Development

The I-17 was a lightweight single-seat low-wing cantilever monoplane. Developed under the design bureau designation TsKB-15 it first flew on 1 September 1934 powered by a 567 kW (760 hp) Hispano-Suiza 12 Ybrs engine. The second prototype designated the TsKB-19 had a revised inward retracting wide-track main landing gear and a Soviet M-100 engine. This second prototype was displayed at the 1936 Salon de l'Aeronautique in Paris. The third prototype designated the TsKB-33 had reduced armament to save weight and a revised engine cooling system, but the further development was abandoned in 1936.

A number of related unbuilt projects were also under development including the I-17Z parasite fighter under the designations TsKB-25 with a M-34RNF engine and the TsKB-43 with a Hispano-Suiza engine, none were built.

## Variants

### TsKB-15

    First prototype I-17 powered by a 567 kW (760 hp) Hispano-Suiza 12 Ybrs engine.

### TsKB-19

    Second revised I-17 prototype powered by a M-100 engine.

### TsKB-25

    Unbuilt I-17Z project for a Mikulin AM-34RNF powered parasite fighter.

### TsKB-33

    Third revised I-17 prototype with reduced armament.

### TsKB-43

    Unbuilt project with a Hispano-Suiza engine.

## Surviving aircraft

One I-17 prototype is on display at the V. P. Chkalov Memorial Museum in Chkalovsk, Russia.

## Specifications (TsKB-19)

General characteristics

* Crew: 1 (pilot)
* Length: 7.30 m (23 ft 11 in)
* Wingspan: 10.19 m (33 ft 5 in)
* Height: 2.56 m (8 ft 5 in)
* Gross weight: 1,930 kg (4,250 lb)
* Powerplant: 1 × Klimov M-100 engine , 632 kW (860 hp)

Performance

* Maximum speed: 490 km/h (305 mph, 265 kn)
* Range: 800 km (497 mi, 432 nmi)
* Service ceiling: 11,000 m (36,090 ft)

Armament

* 1 x 20mm ShVAK cannon
* 4 x 7.62mm ShKAS machine guns
* 2 x 100kg bombs under the wings
