2S31 Vena Russian Amphibious 120mm Self-Propelled Mortar

2S31 Vena

Self-Propelled Mortar (SPM)

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2S31 Vena Russian Amphibious 120mm Self-Propelled Mortar — 2S31_Vena_(BB).jpgTRADOC ODIN WEG

Basic Information

Name

2S31 Vena Russian Amphibious 120mm Self-Propelled Mortar

Designation

2S31 Vena

Alternate Designation

2S31 Vena

Equipment Type

Self-Propelled Mortar (SPM)

Manufacturer

—

Date of Introduction

2010

Description

The 2S31 Vena is a self-propelled gun/mortar of Russian origin. It was developed as a more capable and more high-end alternative to the wheeled 2S23 Nona. The 2S31 was to be more capable in the direct fire role, and more useful as an artillery piece. The 2S31 is based on the chassis of the BMP-3 mechanized infantry combat vehicle. The driver is located at the front, the turret in the center, and the engine and drivetrain art located at the rear. The 2S31 features a high level of automation, an advanced fire control system, and an active protection system. The 120mm 2A80 rifled gun/mortar is the main armament. It is longer than the 120mm gun/mortars found on the tracked 2S9 and wheeled 2S23. Although rifle, it can fire 120mm shells designed for smoothbore and rifled barrels. Laser-guided shells can also be fired. A total of 70 shells of 120mm ammunition are carried, about twice as many as carried by 2S9 or 2S23. The effective range is highly dependent on the type of ammunition. Regular shells can be fired out to 5 or 9 km. Assisted projectiles can be fired up to 13 or 17 km, depending on the type. The maximum rate of fire is quoted as 8 to 10 rpm. The tracked chassis provides the 2S31 with good off-road mobility and the ability to keep up with mechanized infantry. The UTD-29 diesel engine provides up to 450 hp. The maximum speed is 70 km/h on roads. The 2S31 is amphibious and propelled in the water via a water jet.

Ground Specifications

Crew 4

Mobility Type Tracked

Main Weapon 120mm 2A80 rifled gun/mortar

Engine V-10 Diesel (500 hp)

NBC Protection Yes

Max Speed 70.0 km/h

Range 600.0 km

Variants

1B172-2 command vehicle The 1B172-2 unified artillery command-observation post/command-and-staff vehicle is based on the same hull as the 2S31. It is fitted with additional communications equipment and a mast-mounted sensor package.

120-mm 2S34 Khosta This is an upgraded 2S1 self-propelled howitzer fitted with the complete 120-mm 2A80 gun from the 2S31, which is fitted with a muzzle brake. See separate record for more information.

System

Alternative Designation 2S31 Vena

Type Self-Propelled Mortar System

Caliber 120 mm

Chassis BMP-3

Crew 4 (commander, gunner, loader, driver)

Emplacement Time INA

Displacement Time INA

Dimensions

Hull Length 7.511 m

Hull Width 3.366 m

Hull Height 3.439 m

Maximum Ground Clearance 510 mm

Minimum Ground Clearance 190 mm

Track, Ground Length 4.06 m

Track, Width 380 mm

Combat Weight 19,500 kg

Automotive

Engine Name 1 x UTD-29M

Engine Type 10-cyl, 4 stroke V-shaped diesel

Engine Power 500 hp

Power-to-Weight Ratio 25.64 hp/t

Fuel Capacity INA

Suspension Hydropneumatic shock absorbers

Electrical System 27 V

Steering differential with hydrostatic drive

Range 600 km

Speed, Maximum Road 70 km/h

Speed, Average Cross INA

Speed Maximum Swim 9 km/h

Gradient 60 %

Side Slope 30 %

Vertical Step 0.80 m

Trench 2.50 m

Fording Amphibious, 2 Waterjets

Main Weapon System

System

Name 1 x 2A80 Rifled Gun-Mortar

Type Gun-Mortar System

Length, Barrel INA

Weight INA

Elevation 4 deg to 80 deg (-71 mils to 1,422 mils)

Traverse 360 deg (6,400 mils)

Rate of Fire 8 to 10 round/min

Maximum Firing Range 13,000 m

Note The 2A80 is capable of firing all natures of 120 mm mortar ammunition in service with Russian Ground Troops, and this can include HEAT projectiles that are effective at a range of 500 m and provide a valuable direct-fire capability against armoured vehicles. The standard war shot is HE, but other options include cargo ammunition, and guided projectiles.

Ammunition (Option #1)

Name INA

Type HE FRAG

Caliber 120 mm

Shell INA

Maximum Range 13,000 m

Armor Penetration 120-mm 2A80 rifled semi-automatic gun firing mortar bombs, conventional armor-piercing and artillery rounds and Kitolov-2M laser-guided projectiles

Basic Load 70 Rounds

Ammunition (Option 2)

Name INA

Type Mortar Bomb

Caliber 120 mm

Shell INA

Maximum Range 7,200 m

Basic Load 70 Rounds

Auxiliary Weapon System

System

Name 1 x PKMT 7.62mm General-Purpose Machine Gun

Type General-Purpose Machine Gun

Caliber 7.62 mm

Quantity 1 x PKMT General-Purpose Machine Gun

Length 1,192 mm

Barrel Length 605 mm

Weight 7.5 kg

Action Gas-operated, open bolt

Rate of Fire 650 rounds/min

Muzzle Velocity 825 m/s

Maximum Firing Range 3,800 m

Effective Firing Range 1,000 m

Feed System Non-disintegrating metal 50 round belts in 100 and 200/250 round ammunition boxes

Sights Tangent iron sights (default); Optical, Night-vision, Thermal and Radar sights

Ammunition

Type Rifle

Caliber 7.62 mm

Cartridge 7.62×54mmR

Armor Penetration INA

Basic Load INA

Fire Control System

Name INA

Computerized FCS Yes, "Vena" features modern fire control system.

Main Gun Stabilization No

Direct Fire Yes

Indirect Fire Yes

Laser Detector Yes, A laser detector is mounted on the low part of the turret front, either side of the 120 mm 2A80 ordnance and on either side of the turret roof at the rear which is used in conjunction with the smoke grenade system.

Protection

Hull Armor The hull of the 2S31 is built from aluminum (possibly the ABT-102 alloy from Nii Stali), which is then covered with bolt-on hardened steel armor. Without the steel, the aluminum protects against small arms fire and shell splinters, and the additional steel, which is concentrated on the front of the vehicle, is sufficient to stop 30 mm rounds fired at a range of 200 m.

Turret Armor The steel armor protects the crew from small arms fire and shells splinters.

Applique Armor The vehicles can be fitted with bar armour to provide statistical protection against cumulative projectiles or RPG-7 type weapons. There is an additional armour kit available that appears to add spaced modules to the sides of the hull. It is thought to extend protection to 25 mm rounds fired at the sides of the hull and include air pockets to retain the amphibious capabilities of the platform.

Explosive Reactive Armor No

Active Protection System INA

Self-Entrenching Blade INA

NBC Protection Yes

Smoke Equipment Yes

Image Sources

Notes https://en.wikipedia.org/wiki/2S31_Vena; https://commons.wikimedia.org/wiki/File:Self-propelled_120_mm_mortar_2S31_Vena.jpg;

Details

Country of Origin Russia

Category Self-Propelled Mortar System

Land > Infantry Vehicles > Self-Propelled Mortar System

Classification

Domain

Ground

Equipment Status

Active

Dimensions

Length

7.51 m

Width

3.37 m

Height

3.44 m

Weight

19500 kg

Operators (4)

Russia

Azerbaijan

Venezuela

CFE Treaty

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