t-28

The T-28 was a Soviet multi-turreted medium tank. The prototype was completed in 1931, and production began in late 1932. It was an infantry support tank intended to break through fortified defences. The T-28 was designed to complement the heavier T-35 (also multi-turreted), with which it shared turret designs. The type did not have great success in combat, but it played an important role as a development project for Soviet tank designers. A series of new ideas and solutions that were tried out on the T-28 were later incorporated in future models.

Design history

Production of the T-28 The T-28 was in many ways similar to the British Vickers A1E1 Independent tank, which greatly influenced tank design in the period between the wars, even though only a single prototype was manufactured in 1926. The Kirov Factory in Leningrad began manufacturing a tank that was based on the design of the British Independent in 1932. The T-28 tank was officially approved on 11 August 1933. The T-28 had one large turret with a 76.2 mm gun and two smaller turrets with 7.62 mm machine guns. A total of 503 T-28 tanks were manufactured over the eight-year period from 1933 to 1941.

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Type Medium tank Place of origin Soviet Union Service history In service 1933–45 Used by Soviet Union Wars Soviet invasion of Poland, Winter War, World War II, Continuation War Production history Designed 1931 Produced 1932–41 No. built 503 Variants T-28E, T-28 Model 1940, OT-28 Specifications Mass 28 tonnes Length 7.44 m (24 ft 5 in) Width 2.87 m (9 ft 5 in) Height 2.82 m (9 ft 3 in) Crew 6 Armour 20–40 mm (0.79–1.57 in) Main armament 76.2 mm KT-28 howitzer (70 rounds) Secondary armament 4 or 5×7.62 mm DT machine guns (8,000 rounds) Engine 46.9 L Mikulin M-17 V12 engine 500 hp (370 kW) Power/weight 18 hp/t (13 kW/t; 16 hp/ST) Suspension plunger suspension with twin bogies Operational range 220 km (140 mi) Maximum speed 43.5 km/h (27.0 mph.