Tank BM BULAT is the result of modernization of the tank T-64B. The aim of the modernization was to bring the battle and technical characteristics of the tank up to the present level.
Modernization is carried out in three main directions:
|Ground pressure||kgf/cm2||less than 0,98|
|Operating temperature range||°С||-40...+55|
|Deep fording without preparation||m||1,8|
|Deep fording with preparation||m||5,0|
|Name||KBA3 or 2A46M-1|
|Coaxial machine gun|
|Model||KT-7,62 or PKT|
|Anti-aircraft machine gun system|
|Type||self-contained, can be fired from within the safety of the turret under complete armour protection, stabilised in the vertical axis|
|Anti-aircraft machine gun|
|Model||KT-12,7 or NSVT-12,7|
In order to increase mobility, the vehicle is fitted with an enhanced power pack. The new power pack contains a 850 hp 5TDFM engine, which is a forced version of the 5TDF engine with power output being increased.
Installation of the 5TDFM engine requires replacement of the original air cleaner with a new one and re-designing of the exhaust system.
|Weight||t||40,6 (42,5 for T-64BV)||45|
|Power-to-weight ratio||h.p./t||17,2 (16,5 for Т-64BV)||18,9|
|Type||Two-stroke, five-cylinder diesel with gas turbine supercharging, liquid-cooled, with horizontal placement of cylinders and boxing pistons|
|Maximum power output||h.p.||700||850 (1000 for 6TD-1)|
|Engine speed at maximum power output||rpm||2800||2800|
|Specific fuel consumption at maximum power output||g/h.p.-h||178||>160(158 - 6TD-1)|
|Engine weight (dry)||kg||1040||1040|
|Air supply system|
|Type||Two-stage system with ejection-type removal of dust: the first stage - bunker with inertial grid; the second stage - cyclone-type air cleaner (without cassettes)|
|Air cleaner maintenance rate||km||350||400|
|Type||Piston-type three-stage two-cylinder air-cooled compressor|
|Type||Planetary gearbox with frictional switching-on and hydraulic control|
|Number of forward gears||7|
|Number of reverse gears||1|
|Fuel consumption per hour while on the move||lt/h||104||113|
The modernisation is carried out by means of replacement of the 5TDF engine with a 5TDFM engine, installation of a new air cleaner with increased engine-feeding air flow and re-designing of the exhaust system.
To modernise the power pack of the BM Bulat tank by means of installation of a 5TDFM engine, the following is required:
The SE KMDB has developed a design of rubber pads, manufactured the rubber pads and tested them on the tracks of the BM Bulat tank and its versions. No re-designing of the track components is required.
The rubber pads with fasteners are to be supplied separately.
When modernised, the armament-and-fire control system of the BM BULAT MBT has better characteristics than the armament-and-fire control system of the T-80UD MBT.
Enhancement of combat characteristics is achieved by the installation of the following instruments and systems:
|Effective firing range|
|Hit probability of the guided missile|
|at range of 4,000 m||m||0,8||0,8|
|at range of 5,000 m||m||-||0,8|
|Probability of trustworthy target ranging (target of the TANK type) by means of laser range-finder at ranges of|
|if screening objects are available||0,5 (manual selection)||0,8 (automatic selection)|
|Systematic ranging error||m||25||25|
|Target detection range|
|Error of target designation to the gunner||mrd||< 40||< 4|
|Effective firing range in the override mode|
|by day||m||Firing the main gun or coaxial machine gun from the commander's station is not envisaged||1200...1500|
|Firing at ground and air targets from the anti-aircraft machine gun in the stabilised mode on the move||no||In the 'AAMG-AUTO' mode by using the TKN-4SR sight|
|Automatic introduction of angles of sight (PNK-4, PNK-5)||no||yes|
|Gunner's 1G46M primary sight|
|target detection range||m||5000|
|field of view||degrees||20...4,5|
|head mirron stabilization error||mrad||0,2|
|stabilised line-of-sight drift speed, with allowing for the semi-automatic drift compensation system||mrad/min||2,0 (1G46M)|
|laser range-finder wave length||mkm||1,06|
|probability of trustworthy measurement of distance to a target of the TANK type||0,9|
|systematic ranging error||m||25|
|missile guidance capability||available (laser beam-based)|
|built-in test equipment||available|
|increase of stability of output parameters of the 1G46M due to availability of automatic thermal compensation of the output parameters|
|increase of aiming accuracy and decrease of shot preparation time due to availability of automatic drift compensation|
|improvement of maintainability and protection against destruction due to modular design and reduction of the outlet window size by twice|
|Gunner's TO1-KO1ER night sighting system (Ukrainian-made TPN-4ER sight)|
|visibility range in the passive mode at natural night illumination of 3-510-3 lx||m||1400|
|in elevation||manual, depending on the value in the information eyepiece|
|angles of sight||digital-and-analogue|
|lateral lead angles||automatic for all ranges with allowance for deviation of the firing conditions from the normal ones, individual jump angles and geometrical parallax between the main gun, machine gun and sight|
|1V528-12 tank ballistic computer|
|calculation of angles of sight and lead angles for firing the main gun and coaxial machine gun||automatic calculation for all ranges with allowance for the deviations of the firing conditions from the normal ones, jump and throw-off angles specific to the barrel and geometrical parallax between the gun, machine gun and sight|
|2E42M main armament stabiliser|
|mean error of stabilisation|
|change-over speed of turret traversing||degrees/s||40-5|
|Commander's PNK-4SR observation and sighting system|
|target detection range|
|at night at natural night illumination of 3-5·10-3lx in the passive||m||800|
|type||in vertical plane|
|day channel||x||1; 7,8|
|PZU-7 anti-aircraft machine gun system sight|
|field of view||degrees||50|
|1ETs29 anti-aircraft machine gun system control system|
|modes of operation||stabilised observation (together with TKN-4SR sight)|
|AAMG-AUTO - anti-aircraft machine gun system is stabilised in the vertical plane with the aid of the TKN-4SR sight|
|AAMG-SEMIAUTO - together with PZU-7 sight|
|TAKO-621 guided weapon system|
|type||Control system based on a laser beam with the missile automatically keeping to the centre of the beam|
|at ranges up to 4000m||0,9|
|at range of 5000m||0,8|
Increase of protection level of T-64B tank is ensured by means of installation of an additional protection package on the hull and turret of the tank. The additional protection package is intended to considerably increase the tank's protection level against chemical energy attack weapons and kinetic energy attack weapons (armour-piercing fin-stabilised discarding sabot ammunition) at minimum possible increase of the tank weight.
The additional protection package comprises passive (add-on) armour protection and built-in explosive reactive armour (ERA). The explosive reactive armour consists of nose module and side skirts installed on the tank hull, as well as modular sections placed along the outer perimeter of the front and side parts of the turret, and containers installed on the turret roof.
Each section of the explosive reactive armour and the containers installed on the turret roof contain explosive reactive armour panels.
Installation of the additional protection package results in increase of protection level of the BM Bulat tank:
The additional protection package enables the tank to be protected against the following destruction weapons:
The weight of the additional protection package together with mounting and fastening parts and with explosive reactive armour panels is 3,500 kilogrammes.
The time required for installation of the set of explosive reactive armour panesls on one tank by efforts of its crew is 5.5 to 6 hours.
The explosive reactive armour panels installed on the tank do not require any special maintenance while the tank is in service.
The work on fitting the tank with the additional protection package does not require any non-standard technological equipment or contrivances of highly skilled specialists.
Add-on armour is installed on the front and side parts of the turret.
ERA is installed on the front and side parts of the turret as well as on the turret roof.
|Measures||Increase of resistance|
|to APFSDS||to HEAT|
|Installation of add-on armour and ERA||190% Н1||220% Н1|
|Installation of side skirts with ERA||280% Н2||220% Н2|
|Installation of add-on armour and ERA||190% Н1||220% Н1|
In order to increase protection of the BM Bulat tanks and their crews in case of a fire in the tank's fighting compartment or power pack compartment, the tank is fitted with a quick-action fire suppression system, which reduces the response time in the crew compartment down to 150 ms, this resulting in a 20% decrease of no-restoration losses.
Components of the fire suppression system: