Polikarpov I 17

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.

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) each

Performance

Maximum speed: 490 km/h (305 mph)

Range: 800 km (497 miles)

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