Polikarpov I-15

Polikarpov I-15
Državi	Sovjetski
Vlogo	Borec
Prvi let	Oktober 1933
Zgrajena	3300+

V Polikarpov I-15 (rusko И-15) je bilo sovjetsko dvokrilno lovsko letalo iz 1930-ih. Vzdevek Čajka (rusko Чайка, "Galeb") zaradi svojih zgornjih kril je bilo v velikem številu sovjetskih letalskih sil in je bilo skupaj z enokrilcem Polikarpov I-16 eden od standardnih lovcev španskih republikancev med špansko državljansko vojno, kjer so ga imenovali Chato (snub-nose).

Vir: Polikarpov I-15 na Wikipediji

Polikarpov I-152 Walk Around
Fotograf	Vladimir Jakubov
Lokalizacijo	Neznano
Fotografije	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)
Vlogo	Fighter / Ground Attack
National Origin	Soviet Union (USSR)
proizvajalec	Polikarpov Design Bureau
First Flight	1937
Posadke	1 (Pilot)
Dolžina	6.27 m (20 ft 7 in)
Wingspan (Upper)	10.20 m (33 ft 6 in)
Višina	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.

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