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Polikarpov I-153

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The Russian Polikarpov I-153 Chaika (Russian Чайка, "Seagull") was a late 1930s Soviet biplane fighter. Developed as an advanced version of the I-15 with a retractable undercarriage, the I-153 fought in the Soviet-Japanese combats in Mongolia and was one of the Soviet's major fighter types in the early years of the Second World War. The I-153 had a Shvetsov M-25 engine that was capable of propelling it at speeds of up to 450 kilometers per hour at 4,600 meters. However, the Shvetsov was quickly replaced by the Shvetsov M-62R engine for improved performance. The armament of the Chaika consisted of four extremely fast firing ShKAS Machine Guns with 2,600 rounds of ammunition between them. The ordnance that could be carried on the Chaika varied between either 200 kilograms worth of bombs or six RS-86 Rockets.

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6.1 m

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1450.0

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450.0

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Polikarpov I-153

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Fighter

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Shvetsov M-25

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The Russian Polikarpov I-153 Chaika (Russian Чайка, "Seagull") was a late 1930s Soviet biplane fighter. Developed as an advanced version of the I-15 with a retractable undercarriage, the I-153 fought in the Soviet-Japanese combats in Mongolia and was one of the Soviet's major fighter types in the early years of the Second World War. The I-153 had a Shvetsov M-25 engine that was capable of propelling it at speeds of up to 450 kilometers per hour at 4,600 meters. However, the Shvetsov was quickly replaced by the Shvetsov M-62R engine for improved performance. The armament of the Chaika consisted of four extremely fast firing ShKAS Machine Guns with 2,600 rounds of ammunition between them. The ordnance that could be carried on the Chaika varied between either 200 kilograms worth of bombs or six RS-86 Rockets. The total weight of the I-153 was around 1,450 kilograms unloaded while total length was 6.1 meters. Wingspan meanwhile was around 10 meters. Being a biplane, the Chaika's operational range was limited to 470 kilometers but the service ceiling of the aircraft was very good at 10,700 meters. Most notable of the design of the Chaika was its inverted gull wings maintained from the earlier Polikarpov I-15. However, to reduce drag, the I-153 had a retractable undercarriage unlike its predecessor. The main downside of the I-153's inherent upgrades over the earlier I-15s was that with a new engine and new metal frame to support the modified equipment, the weight became substantially heavier, which meant that the Chaika would have less maneuverability. Nonetheless, the I-153 was still used in fundamentally the same role.