Polikarpov I-17

Polikarpov I-17

TípusSingle-seat fighter prototype
Első repülés1 September 1934

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

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Polikarpov I-17
FotósVlagyimir Fadejcsev
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The Polikarpov I-17 was a Soviet fighter aircraft that was designed in the mid-1930s. It was intended to be a high-performance monoplane with retractable landing gear and a powerful engine. The I-17 was a development of the earlier Polikarpov I-16, which was the main Soviet fighter at the time. The I-17 had a more streamlined fuselage, a longer wingspan, and a larger tail. It also had a new engine, the M-105, which was a liquid-cooled V-12 that could produce 1,050 horsepower. The I-17 was expected to reach a top speed of 650 km/h and have a range of 1,000 km.
The I-17 made its first flight in December 1936, but it encountered several problems during testing. The engine was unreliable and prone to overheating, the landing gear was faulty and sometimes failed to retract or extend, and the aircraft was unstable at high speeds. The I-17 also suffered from structural failures and crashes that killed several pilots, including the chief designer Nikolai Polikarpov. The development of the I-17 was delayed and eventually cancelled in 1939, as the Soviet Air Force focused on improving the existing I-16 and developing new fighters such as the Yakovlev Yak-1 and the Lavochkin-Gorbunov-Gudkov LaGG-3. Only a few prototypes of the I-17 were built, and none of them saw combat service.

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