Polikarpov I-15

Polikarpov I-15
Pays	Union soviétique
Rôle	Combattant
Premier vol	En octobre 1933
Construit	Plus de 3300

Lla Polikarpov I-15 (Russe: И-15) était un avion de chasse biplan soviétique des années 1930. Surnommé Chaika (russe: Шайка, « Mouette ») en raison de ses ailes supérieures ravies, il a été exploité en grand nombre par l’armée de l’air soviétique, et avec le Monoplan Polikarpov I-16, était l’un des chasseurs standard des républicains espagnols pendant la guerre civile espagnole, où il a été appelé Chato (nez retroussé).

Source: Polikarpov I-15 sur Wikipedia

Polikarpov I-152 Walk Around
Photographe	Vladimir Yakubov
Localisation	Inconnu
Photos	177

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General Characteristics and Role

The Polikarpov I-152, better known as the I-15bis, was a Soviet biplane fighter aircraft developed in the mid-1930s. It was a direct, albeit more conservative, development of the successful Polikarpov I-15 « Chaika » (Seagull). The I-15bis reverted to the conventional full upper wing (instead of the distinct « gull wing » of the original I-15), which simplified construction but slightly reduced performance. Despite being technically obsolete by the time the Soviet Union entered World War II, it saw extensive use in the Spanish Civil War, the Soviet-Japanese border conflicts, and as a primary fighter aircraft in the early stages of the Eastern Front, often transitioning into a ground-attack role.

Property	Typical Value (I-15bis)
Rôle	Fighter / Ground Attack
National Origin	Soviet Union (USSR)
Fabricant	Polikarpov Design Bureau
First Flight	1937
Crew	1 (Pilot)
Length	6.27 m (20 ft 7 in)
Wingspan (Upper)	10.20 m (33 ft 6 in)
Height	3.30 m (10 ft 10 in)
Empty Weight	1,000 kg (2,205 lb)
Max Takeoff Weight	1,670 kg (3,682 lb)

Powerplant and Performance

Engine: One Shvetsov M-25V nine-cylinder, air-cooled radial engine.
Power Output: 560 kW (750 hp).
Maximum Speed: 370 km/h (230 mph; 200 kn) at 3,000 m (9,843 ft).
Range: 770 km (480 mi; 420 nmi).
Service Ceiling: 9,800 m (32,200 ft).
Climb Rate: 7.7 m/s (1,520 ft/min).

Armament and Variants

Fixed Armament: 4 x 7.62 mm PV-1 machine guns (or later, 4 x 7.62 mm ShKAS machine guns) in the fuselage.
External Ordnance: Up to 150 kg (331 lb) of bombs or 6 x RS-82 unguided rockets carried on underwing racks (a major feature that extended its service life).
Key Design Differences from I-15: The primary change was the upper wing design. The I-15bis had a standard, straight-across upper wing supported by struts, lacking the inverted « gull wing » center section of the original I-15.
I-15ter (I-153): The next version, the I-153 Chaika, reverted to the « gull wing » design but introduced a retractable landing gear, significantly improving performance.