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Object 772 Tank w/ ATGM

The project of the missile tank "object 772" was created at the ChTZ design bureau (chief designer P.P. Isakov) on the basis of the components and assemblies of the T-64 tank according to the usual layout scheme. For the rocket complex "Lotus", as well as for the complex "Typhoon", open and closed launchers were developed. A closed PU was chosen as the main one. Launcher ATGM "Lotos" was located in a rotary armored turret, consisting of a hull and armor PU. The weight of the fighting compartment (BO) of the missile tank is 800- more than the weight of the standard "object 772" 900 kg, in which the booking of the launcher added 450- 500 Kg and the body of the tower 350- 400 Kg ... There were two crew members in the tower. The hull of the tank is welded from rolled armor plates, the frontal part is made of combined three-layer armor. The fighting compartment housed nine missiles in two vertical rows, which, when loaded through a special conveyor, were fed into the launcher. One missile was in an armored launcher. Before firing, the rocket, together with the movable elements of the launcher, was fed forward, then the rocket was launched. On assignment, the probability of hitting a rocket from the first shot was 60%.

Along with the creation of tanks with barreled artillery weapons, in the early 60s. great attention was paid to the development of tanks with guided missile weapons. After the cessation of work on heavy tanks, the design bureaus of ChTZ and LKZ, by the Decree of the Central Committee of the CPSU and the Council of Ministers of the USSR of February 17, 1961, were focused on the development of medium tanks with guided weapons. By a decree of the Central Committee of the CPSU and the Council of Ministers of the USSR of December 16, 1961, ChTZ was instructed to develop a tank with reactive guided weapons and enhanced anti-nuclear and anti-cumulative protection. In March 1962, GBTUs were developed by TTT for the tank, and in June of the same year, the ChTZ design bureau submitted a draft design of the Object 772 tank for consideration by the scientific and technical council of the USSR State Committee of Ministers for OT.

According to the project, the tank weighing 37 tons had a classic layout with a crew of three in the hull and in the turret, with the placement of missile weapons in a rotating turret and the installation of a diesel engine from the V-2 diesel family along the longitudinal axis of the hull in the aft part of the tank. The fighting compartment was developed in three versions: with ATGM "Lotos" designed by TsKB-14 (Tula), ATGM "Typhoon" designed by OKB-16 (Moscow) and ATGM "Rubin" designed by SKB (Kolomna).

In the variant of application of the ATGM "Lotos" it was supposed to install a 73-mm gun "Thunder" along the longitudinal axis of the tower for firing unguided active-rocket projectiles "Spear". On the cradle of the gun, it was planned to fix the guide of the ATGM "Lotos" launcher. A loading mechanism was located behind the gun, in the conveyor of which there were 12 Lotus guided missiles. To the right of the gun was a 7.62 mm PKT machine gun with 2,000 rounds of ammunition in one belt. To the left of the gun, a gunner-operator's workplace was equipped, to the right of him - a tank commander's workplace.

The Lotos ATGM guided missile had a semi-automatic guidance system with IR transmission of commands. The noise immunity of this system was higher than that of the radio-controlled system. The rocket, made according to the "rotary wing" aerodynamic design, had a caliber of 160 mm, a launch weight of 53 kg and a cumulative warhead weighing 6 kg. ATGM was intended to destroy armored targets at ranges up to 3000 m. The maximum missile flight speed was 700 m / s, armor penetration - 500 mm.

The gun with a launcher and a coaxial machine gun was stabilized in two guidance planes and had vertical aiming angles from -5 to + 15 °. In the automatic firing mode, the launcher was brought to a loading angle of + 11. The loading cycle time, equal to 15 s, ensured a combat rate of fire of the Lotos ATGM of 2-3 rds / min when firing at ranges from 1500 to 3000 m. an armored partition was installed a loading mechanism for the 73-mm gun "Thunder", in the conveyor of which 20 active-reactive rounds were placed. Another 10 shots were in a non-mechanized stowage in the control compartment. The loading mechanism provided a rate of fire of 8-10 rds / min.

The second version of the fighting compartment of the tank "Object 772" provided for the installation of ATGM "Typhoon". The guided missile was created on the basis of the Phalanx ATGM and at the stage of preliminary design had the index 301-P. The rocket with a caliber of 140 mm had a cumulative fragmentation warhead and a semi-automatic radio guidance system. The armor penetration of the rocket is 500 mm, the maximum flight speed is 250 m / s, the firing range is from 300 to 4000 m. According to calculations, the fragmentation effect of the missile's warhead corresponded to the action of a 100-mm fragmentation artillery projectile.

The location of the auxiliary weapons (the 73-mm Thunder gun and the PKT coaxial machine gun) and the workplaces of the crew members were the same as in the first version of the tank project. Ammunition for the 73-mm gun "Thunder" in the amount of 30 rounds was placed in the rotating conveyor of the loading mechanism, which was located under the floor of the fighting compartment. 15 301-P guided missiles for the Typhoon ATGM were located in the aft part of the fighting compartment behind a sealed partition. This partition also provided additional protection for the crew from radiation from the rear of the turret. In four rows of mechanized stowage there were 12 guided missiles (three missiles in a row). Three more missiles were on a turntable with grippers and a pusher that provided the missile feed to the launch bracket.

In the third version of the project of the tank "Object 772" it was supposed to install a 115-mm gun-launcher for firing ATGM "Rubin" and active-rocket projectiles "Spear" in the cast turret. The tank's crew was reduced to two people - the operator-commander and the driver-mechanic. The workplace of the commander-operator was to the left of the gun-launcher. To the right of it is the loading mechanism conveyor, which housed all the ammunition for the main weapon - 20 Rubin ATGMs of 115 mm caliber and 20 Spear missiles of 115 mm caliber. Ammunition for a 7.62 mm machine gun paired with a gun was 2000 rounds.

The bow of the armored hull and the turret of the Object 772 tank were cast. The height of the vehicle was 1815 mm. Armor protection at directional firing angles of + 30 ° was supposed to provide protection against cumulative shells that had armor penetration of 600 mm, as well as from 122-mm armor-piercing blunt-headed shells. The maximum thickness of the upper stepped frontal part of the hull was 90 mm with tilt angles from the vertical from 77 to 84 °. The thickness of the rolled hull sheets is 70 mm. The turret of the tank had a stepped shape and the maximum thickness of armor in the frontal part was 90 mm at an angle of inclination of 84. To provide anti-radiation protection for the crew, a lining with a thickness of 90-100 mm was installed in the crew compartments. The multiplicity of radiation attenuation at REM was equal to 25.

The tank provided for the installation of a V-25 diesel engine with a capacity of 625 kW (850 hp). In the power plant, it was planned to use a cassette-free air cleaner with ejection removal. The capacity of internal fuel tanks was 1200 liters, external - 500 liters. The estimated maximum speed of the tank is 65 km / h. The tank was supposed to install a single-flow hydromechanical transmission and planetary final drives. The engine and transmission (without final drives) constituted a single power unit.

The suspension system has been developed in two versions - with fixed hydropneumatic and torsion bar suspension. The tracked propeller consisted of twelve track rollers with internal shock absorption and six carrier rollers with external shock absorption. The caterpillar with a width of 580 mm was also developed in two versions - with RMSh. the design of which provided for the placement of rubber rings in all the lugs of the mating tracks, and with the OMSh. Tracks with OMSh had plug-in split borated bushings and floating borated pins. The project provided for a hydraulic track tensioning mechanism. The calculated average ground pressure was 76.5 kPa (0.78 kgf / cm-). The project worked out the possibility of overcoming the tank along the bottom of water obstacles up to 5 m deep using a set of OPVT.

In 1963, work on the Object 772 tank was discontinued in connection with the development of work on the creation of a new promising medium tank Object 775.