The T-64 is a Soviet tank manufactured in Kharkiv, and designed by Alexander Morozov. The tank was introduced in the early 1960s. It was a more advanced counterpart to the T-62: the T-64 served in tank divisions, while the T-62 supported infantry in motor rifle divisions. It introduced advanced features for its time such as composite armour, a compact engine and transmission, and a 125-mm smoothbore gun equipped with a carousel type autoloader to allow the crew to be reduced to three so the tank could be smaller and lighter. In spite of being armed and armoured like a heavy tank, the T-64 weighed only .
These features made the T-64 expensive to build, significantly more so than previous generations of Soviet tanks. This was especially true of the power plant, which was time-consuming to build and cost twice as much as more conventional designs. Several proposals were made to improve the T-64 with new engines, but chief designer Alexander Alexandrovich Morozov's political power in Moscow kept the design in production in spite of any concerns about price.
The T-64 formed the design basis of the Soviet T-80, which entered service in 1976. The tank is in use in a few nations or regions as of 2023. The T-64 is undergoing significant factory overhauls and modernization in Ukraine.
Overview The T-64 was conceived at the Kharkiv Morozov Machine Building Design Bureau, as the next-generation main battle tank by Alexander A. Morozov, the designer of the T-54 (which, in the meantime, would be incrementally improved by Leonid N. Kartsev's Nizhny Tagil bureau, by the models T-54A, T-54B, T-55, and T-55A).
The T-64 was the first Soviet tank to use an autoloader for its 125-mm gun, allowing one crew member's position to be omitted and helping to keep the size and weight of the tank down. Tank crewmen would joke that the designers had finally caught up with their unofficial hymn, Three Tankers, a song written to commemorate the crewmen fighting in the Battle of Khalkhin Gol, in 3-man BT-5 tanks in 1939.Три танкиста (Three Tankers)
The T-64 also pioneered other Soviet tank technology: the T-64A model of 1967 introduced the 125-mm smoothbore gun, and the T-64B of 1976 would be able to fire an anti-tank guided missile through its gun barrel. Soviet military planners considered the T-64 the first of the third-generation tanks: "The Soviets saw tank generations in this manner: 1920–1945, first generation; 1946–1960, second generation; 1961–1980, third generation; and 1981–present, fourth generation. Since the last really new tank design, the T-80, came out in 1976, they feel that they have not produced a true Fourth Generation Tank Design. In comparison, they count the M1, Challenger, and Leopard 2 as Fourth Generation and the LeClerc as Fifth Generation. " and the first main battle tank.T-64 manual ("Танк Т-64А. Техническое описание и инструкция по эксплуатации. 1984") state T-64 as "main battle" tank, while previous T-62 and T-55 (in corresponding military manuals, like "Танк Т-62. Руководство по материальной части и эксплуатации. 1968") stated as "medium" tanks
The T-64 design was used as basis by LKZ for the gas turbine-powered T-80 main battle tank. The T-64A turret was adopted for early T-80 tank models, with its main gun and automatic loading mechanism, and upgraded armour.
The T-64 was only supplied to the Soviet Army and its successors. It was never exported before 1991, unlike the T-54/55. The tank equipped elite and regular formations in Eastern Europe and elsewhere, the T-64A model being first deployed with East Germany's Group of Soviet Forces in Germany (GSFG) in 1976, and some time later in Hungary's Southern Group of Forces (SFG). By 1981, the improved T-64B began to be deployed in East Germany and later in Hungary. While it was believed that the T-64 was reserved for elite units, it was also used by much lower level "non-ready formations", for example, the Odessa Military District's 14th Army.
With the break-up of the Soviet Union in 1991, T-64 tanks remained in the arsenals of Russia, Ukraine, Belarus and Uzbekistan. In mid-2014, nearly 2,000 of the former Soviet inventory of T-64 tanks were in service with the military of Ukraine and about 4,000 were out of service and awaiting destruction in Russia.
Development history Object 430
Studies for the design of a new battle tank started in 1951. The KB-60M team was formed at the Kharkiv design bureau of the Kharkiv transport machine-building factory No. 75 named for Malyshev () by engineers coming back from Nizhniy Tagil, with Morozov at its head.
A project named object 430 led to three prototypes which were tested in Kubinka in 1958. Main battle tank T-64 (Основной боевой танк Т-64) Those vehicles had characteristics that were going to influence and radically alter the design of tanks on this side of the Iron Curtain. For the first time, a compact opposed-piston engine was used: the 4TD, designed by the plant's engine design team. The transmission system comprised two lateral gears on each side of the engine. Those two innovations yielded a very short engine compartment with the opening located beneath the turret. The engine compartment volume was almost half that of the T-54. An improved cooling system and a new lightweight suspension was fitted, featuring hollow metallic wheels of a small diameter and caterpillar tracks with rubber joints.
The tank would be armed with the D-54TS and would have frontal armour of 120 mm. As it did not present a clear superiority in combat characteristics when compared to the T-55, which was entering active service, Morozov decided that production was not yet ready given the project's drawbacks. However, studies conducted on the Object 430U, featuring a 122 mm gun and 160 mm of armour, demonstrated that the tank had the potential to carry the firepower and armour of a heavy tank on to a medium tank chassis. A new project was consequently started, the Object 432.
Object 432 The gun fitted on this new tank was a 115 mm D-68 (2A21). This was a potentially risky decision to replace the human loader by an electro-hydraulic automatic system, since the technology was new to Russian designers. The crew was reduced to three, which allowed a considerable reduction in internal volume and external visible silhouette, and consequently in weight, from 36 tonnes (obyekt 430) to 30.5 tonnes. The height dropped by 76 mm.
The arrival of the British 105 mm L7 gun and the US M68 variant of it, fitted to the Centurion and M60 tanks, forced the team to adopt composite armour. The recently created process was called "K combination" by Western armies: this protection consisted of an aluminium alloy layer between two high strength steel layers. As a consequence, the weight of the prototype rose eventually to 34 tonnes. But, as the engine was now a 700 hp (515 kW) 5TDF (also locally designed), its mobility remained superior to that of the T-62. The obyekt 432 was ready in September 1962 and production started in October 1963 in the Kharkiv plant. On 30 December 1966, it entered service as the T-64.
T-64A
Even as the first T-64s were rolling off the assembly lines, the design team was working on a new version, named Object 434, which would allow it to maintain firepower superiority. The new 125 mm D-81T gun, from the Perm weapons factory, was fitted to the tank. This gun was a scaled-up version of the 115 mm smoothbore cannon from the T-62. The larger size of the 125 mm ammunition meant that less could be carried inside the T-64, and with a fourth crewman loader taking up space as well, the tank would only have a 25-round capacity. This was unacceptably low for the Soviet designers, but strict dimensional parameters forbade them from enlarging the tank to increase interior space. The solution was to replace the human loader with a mechanical autoloader, cutting the crew to three and marking the first use of autoloaders in a Soviet MBT. The 6ETs10 autoloader has 28 rounds and can fire 8 shots per minute; the stabiliser, a 2E23, was coupled to the new TPD-2-1 (1G15-1) sight. Night driving was also supported with the new TPN-1-43A periscope, which would benefit from the illumination of an infrared L2G projector, fitted on the left side of the gun. The shielding was improved, with fibreglass replacing the aluminium alloy in the armour, and small spring-mounted plates fitted along the mudguards (known as the gill skirt), to cover the top of the suspension and the side tanks. They were extremely fragile and were often removed. Some small storage spaces were created along the turret, with a compartment on the right and three boxes on the front left. Snorkels were mounted on the rear of the turret. An NBC protection system was fitted and the hatches were widened.
Prototypes were tested in 1966 and 1967 and, as production began after the six hundredth T-64, it entered service in the Soviet Army under the designation T-64A. Chief engineer Morozov was awarded the Lenin Prize for this model's success.
Designed for elite troops, the T-64A was constantly updated as available equipment was improved. After three years in service, a first modernisation occurred, comprising: fire control, by replacing the sights with the TPD-2-49 day sight with an optical coincidence rangefinder and a TPN-1-49-23 night sight, and stabilisation by mounting a 2E26 system. the radio by mounting a R-123M night vision with a TBN-4PA for the driver and a TNP-165A for the tank leader. His post was transformed by mounting a small stabilised turret with an anti-aircraft NSVT 12.7 mm × 108 machine gun, electrically guided through an optical PZU-5 sight, and fed with 300 rounds. It could be used from within the tank so that the tank leader could avoid being exposed (as on previous tanks). The possibility of mounting a KMT-6 anti-mine system was also added.
A derived version appeared at the same time, designed for the commanding officer and named T-64AK. It comprised a R-130M radio with a 10 m telescopic antenna, which could be used only in a static position as it required shrouds, an artillery aiming circle PAB-2AM and TNA-3 navigation station; all of these could be powered by an auxiliary petrol generator.
In 1976, the weapons system was improved by mounting a D-81TM (2A46-1), stabilised by a 2E28M2, supplied by an automatic 6ETs10M. The night sight was replaced by a TNPA-65 and the engine could accept different fuels, including diesel fuel, kerosene or petrol. The production, first carried on the B variant, stopped in 1980.
The majority of T-64As were further modernised after 1981, by mounting a six smoke grenade-launcher 81 mm 902A on each side of the gun, and by replacing the gill plates by a rubber skirt for a longer life. Some of them seem to have been fitted with reactive bricks (as the T-64AV) after 1985, or even with laser TPD-K1 telemeters instead of the optical TPD-2-49 optical coincidence rangefinder (1981). Almost all T-64s were modernised into T-64R, between 1977 and 1981, by reorganising external storage and snorkels, similar to the T-64A.
T-64B The design team was carrying on its work on new versions. Problems with the setup of the 5TDF engine occurred as the local production capacity was proven to be insufficient against a production done in three factories (Malyshev in Kharkiv, Kirov in Leningrad and Uralvagonzavod).
From 1961, an alternative to the Object 432 was studied, with a 12 V-cylinder V-45 engine: the Object 436. Three prototypes were tested in 1966 in the Chelyabinsk factory. The order was to develop a model derived from the 434 with the same engine given to the Object 438, later renamed as the Object 439. Four tanks of this type were built and tested in 1969, which showed the same mobility as the production version, but mass production was not started. They served as a basis for the design of the T-72 engine compartment.