Polikarpov I-17
The Polikarpov I-17 (Russian Поликарпов И -17 ) was a single-seat, soviet fighter plane that does not make it past the prototype stage. Was officially introduced to the low-wing monoplane at the 15th Paris Air Show in November 1936.
History
The development of the Polikarpov I-17 began in 1933 in the experimental design bureau Polikarpov headed Nikolai Nikolaevich Karpov Poli. After a year of development flew on 1 September 1934, the first prototype called ZKB 15th The aircraft was built in Zavod (Factory ) No. 39, reaching, powered by a 800 hp Hispano -Suiza 12Y (HS 12Y ), a top speed of 455 km / h Pilot of the first flight was Valery Pavlovich Chkalov, a later bearer of the Order Hero of the Soviet Union. Since 1940, the aircraft is in Chkalov Museum.
Although the flight performance of the machine was also strong, but did not reach the goals set by the developers themselves target of a top speed of 500 km / h Therefore, it was already started in spring 1935 with the testing of a second machine called the ZKB -19, which was built in Zavod No. 21 and again flown by Chkalov. Differences from the first prototype consisted in the construction of the chassis, the shape of the aircraft nose, shorter ailerons and the installation of buoyancy aids. This machine was in 1936 presented at the 15th Paris Air Show. In 1937 she was exhibited in Milan a second time, the machine was declared in both cases as a sport plane.
ZKB -19 reached, equipped with a 750 -hp Klimov M -100 ( a Soviet license replica of the HS 12Y ) a top speed of 500 km / h and a maximum altitude of 9700 meters. The plane was like the first prototype equipped with four 7.62 mm machine guns SchKAS within the wing leading edges that were removed for the exhibitions in Paris and Milan again. The whereabouts of this machine after the completion of test flights is not known.
By the end of 1936, the developer began with the testing of a third prototype under the name ZKB - 19bis. His first flight the aircraft had on 12 November 1936 flown by K. K. Popov. The changes between the second and third stages were significantly lower than when moving from the first to the second stage. So was the roof of the cockpit of two parts and the armament of two 7.62 mm machine guns SchKAS in the wings as well as a firing through the propeller 20mm SchWAK cannon.
More prototypes with the names ZKB 33, ZKB -25 and ZKB -43 were planned, but were not completed. Provided as the parasite fighter for the project Sweno I- 17Z was also not realized with enlarged by nine square meters wing area.