Polikarpov I-15
1933
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Polikarpov I-15

Rehabilitated in the eyes of the Soviet hierarchy by the success of the I-5, Polikarpov initiated design of a potential successor, which, as the TsKB-3 (this designation indicating Tsentralnoye konstruktorskoye byuro, or Central Design Bureau), flew in October 1933. Powered by a Wright SGR-1820-F-3 Cyclone nine-cylinder radial rated at 715hp at 2130m, it was of mixed construction and embodied such refinements as I-type interplane struts, the upper wing "gulled" into the fuselage and cantilever mainwheel legs. Exceptional handling and manoeuvrability re-suited in immediate series production as the I-15 with deliveries of the initial model commencing late in 1934. This was powered by a 480hp M-22 engine and carried an armament of two 7.62mm guns. A total of 404 M-22-engined I-15s was delivered before, in 1936, the imported Cyclone engine became available, this being installed in 59 aircraft before the licence-built version of the Cyclone, the M-25 rated at 700hp at 2300m, was delivered for installation in the final 270 I-15s, production being completed in 1937. In the meantime, armament had been doubled to four 7.62mm guns and an armoured (9mm) seat fitted. Popularly known as the Chaika (Gull), an epithet resulting from its "gulled" upper wing, the I-15 fought in Spain to where 155 were delivered, and was licence-built by the Spanish CASA concern which completed 237 M-25-engined examples, a few of these having the M-25V engine affording 775 hp for take-off. Some 40 late-production I-15s were fitted with twin 12.7mm guns rather than the quartet of 7.62mm weapons.

3-View 
Polikarpov I-15A three-view drawing (1278 x 836)


Specification 
 CREW1
 ENGINE1 x M-25B, 550kW
 WEIGHTS
    Take-off weight1700 kg3748 lb
    Empty weight1310 kg2888 lb
 DIMENSIONS
    Wingspan10.2 m33 ft 6 in
    Length6.3 m21 ft 8 in
 PERFORMANCE
    Max. speed370 km/h230 mph
    Cruise speed290 km/h180 mph
    Ceiling9000 m29550 ft
    Range w/max.fuel600 km373 miles
 ARMAMENT4 x 7.62mm machine-guns

Comments
, 17.06.2011

cleats

Kenney Nelson, 03.10.2010

While stationed in China with the B-29 project, the Chinese nearby area had the I-15. The one I saw had a single short round wide wing. Very small cockpit. It was left over from the Russia Air Force that flew in China against the Japanese.

felipe, 06.08.2010

gostei ele tinha uns canhão de 25 mm e ele se defrontava com BF-109 ou FW-190 e de patrulha para 30 Pe-8 que iria bombardear a Noruega em 1942 em sua última missão da Segunda Guerra Mundial

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