In the early 90s, the Volgograd Tractor Plant Joint Stock Company created a new 2S25 self-propelled anti-tank gun on the extended base of the BMD-3 airborne assault vehicle. The artillery unit for this vehicle was developed in Yekaterinburg by specialists from the artillery plant No. 9, which produces both tank guns and artillery systems with a caliber of up to 152 mm. Although the self-propelled gun was originally intended for the Russian airborne troops - it is designed for parachute landing with a crew on board from the Il-76 military transport aircraft - it is now also offered to the marines in order to provide anti-tank and fire support during landing operations … In the front of the self-propelled gun hull there is a control compartment, the fighting compartment with a turret occupies the middle part of the vehicle, and the engine compartment is located in its stern. In the stowed position, the vehicle commander sits to the right of the driver, and the gunner to the left. Each crew member has observation devices built into the roof with day and night channels. The commander's combined sight is stabilized in two planes and combined with a laser sight to aim 125-mm projectiles at a laser beam.
The gunner's sight is stabilized in the vertical plane and includes a laser rangefinder, which provides the ballistic computer with constantly changing target data. The main armament of the CAU 2C25 consists of a 125-mm smooth-bore 2A75 tank gun, created on the basis of the 125-mm 2A46 tank gun, which is installed on the main battle tanks T-72, T-80 and T-90. Taking into account the need to install the gun on a lighter chassis, the specialists of the artillery plant No. 9 equipped the gun with a recoil device of a new type. The 2A75 cannon is equipped with an ejector and an insulating casing, but does not have a muzzle brake. It is fully stabilized in the vertical and horizontal planes and fires the same 125-mm separate-case loading ammunition that is used for firing from the 2A46 smooth-bore tank gun. In addition, the 2A75 cannon's ammunition includes a laser-guided projectile that can engage a target at a distance of up to 4000 m. The maximum rate of fire is 7 rounds per minute. The cannon is loaded using a horizontal automatic loader mounted behind the self-propelled gun turret. It holds 22 shots loaded and ready for immediate use. When loading, a projectile is first fed into the breech of the gun, then a propellant charge in a semi-combustible sleeve-cap. In case of failure of the automatic loader, it is possible to manually load the gun.
As an auxiliary weapon, the anti-tank self-propelled gun is equipped with a 7.62-mm PKT machine gun paired with a cannon with an ammunition load of 2,000 rounds, loaded in one belt. Since the ACS 2S25 was developed on the basis of the BMD-3, many components and assemblies of the chassis and the power plant of the base machine were used in its design. In the engine compartment of the ACS 2S25, a multi-fuel diesel engine 2B-06-2 is installed, developing a maximum power of 331 kW. A hydromechanical transmission with a hydrostatic swing mechanism is interlocked with it. The automatic transmission has five forward gears and the same number of reverse gears. The suspension is individual, hydropneumatic, providing a change in the clearance value in the range from 190 to 590 mm from the driver's seat. In addition, the hydropneumatic suspension ensures high cross-country ability and a smooth ride. The undercarriage, for one side, includes seven single track rollers, four support rollers, a front drive wheel and a rear guide wheel. There is a hydraulic track tensioning mechanism. The caterpillar is steel, double-ridged, pinned engagement. When driving on the highway, the car develops a maximum speed of 65-68 km / h, and on dry dirt roads it shows an average speed of 45 km / h. The standard equipment of the vehicle includes a computerized fire control system, a system of protection against weapons of mass destruction and a set of night vision devices.
Like other Russian lightly armored combat vehicles, the 2S25 self-propelled gun is floating and moves in the water with the help of two water-jet propellers, which allow it to reach a speed of 8-10 km / h. To increase buoyancy, the machine uses road wheels with closed air chambers and powerful water pumps that pump water out of the hull. The vehicle possesses good seaworthiness and, while afloat, can operate effectively in waves of 3 points, including aimed fire in the forward sector of fire equal to 70 °.
Tactical and technical characteristics
crew (crew), 3 people
combat weight, t 18, 0
crawler propulsion type
full length, m 7, 07 (with a gun - 9, 771)
full width, m 3, 152
height, m 2, 72 (with wind sensor - 2, 98)
engine type multi-fuel diesel 2В-06-2
engine power, h.p. 510
maximum speed, km / h 71 (on the ground - 49, afloat - 10)
cruising range, km 500 (on the ground - 250, afloat - up to 100)
bulletproof armor (homogeneous armor steel)
armament 125-mm smooth-bore tank gun 2A75, 7, 62-mm PKT machine gun
ammunition 22 rounds, 2000 rounds
caliber, mm 125
maximum firing range, over 4000 m
rate of fire, rounds per minute 7
muzzle velocity, m / s no data
elevation / declination angles, degrees -5 … + 15
angles of horizontal guidance, degrees 360
