T-80 - Development History

Development History

The project to build the first Soviet turbine powered tank began in 1949. Its designer was A. Ch. Starostienko, who worked at the Leningrad Kirov Plant (LKZ). The tank was never built because available turbine engines were of very poor quality. In 1955 two prototype 1,000 hp (746 kW) turbine engine were built at the same plant under the guidance of G. A. Ogloblin. Two years later a team led by the famous heavy tank designer Ż. J. Kotin constructed two prototypes of the Ob'yekt 278 tank. Both were hybrids of the IS-7 and the T-10 heavy tanks, powered by the GTD-1 turbine engine, weighing 53.5 tonnes and armed with the M65 130 mm tank gun. The turbine engine allowed the tank to reach a maximum speed of 57.3 km/h (35.6 mph) but with only 1950 liters of fuel on board, range was a mere 300 km (190 mi). The two tanks were considered experimental vehicles and work on them eventually ceased. In 1963, the Morozov Design Bureau designed the T-64 and T-64T tanks. They used a GTD-3TL turbine engine which generated 700 hp (522 kW). The tank was tested until 1965. At the same time in Uralvagonzavod a design team under the guidance of L. N. Karcew created the Ob'yekt 167T tank. It used the GTD-3T turbine engine which supplied 801 hp (597 kW).

In 1966 the experimental Ob'yekt 288 rocket tank, powered by two aerial GTD-350 turbine engines with a combined power of 691 hp (515 kW), was first built. Trials indicated that twin propulsion was no better than the turbine engine which had been in development since 1968 at KB-3 of the Kirov Plant (LKZ) and at WNII Trans Masz. The tank from LKZ equipped with this turbine engine was designed by Nikolay Popov. It was constructed in 1969 and designated Ob'yekt 219 SP1. It was renamed the T-64T, and was powered by a GTD-1000T multi-fuel gas turbine engine producing up to 1,000 hp (746 kW). During the trials it became clear that the increased weight and dynamic characteristics required a complete redesign of the vehicle's caterpillar track system. The second prototype, designated Ob'yekt 219 SP2, received bigger drive sprockets and return rollers. The number of wheels was increased from four to five. The construction of the turret was altered to use the same compartment, 125 mm 2A46 tank gun, auto loader and placement of ammunition as the T-64A. Some additional equipment was scavenged from the T-64A. The LKZ plant built a series of prototypes based on Ob'yekt 219 SP2. After seven years of upgrades, the tank became the T-80.