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2S31 Vena



Overview


2S31 Vena

Forward view of 2S31 Vena self-propelled gun/mortar on display.
Source: Vitaly V. Kuzmin - © GNU Attribution Share Alike license

Origin
Russia
Type
Self-propelled gun-mortar
Entered service
2010
Status
In service
Development
1980's - 2007
Developer
Russia - Motovilikha Plant
Production
1995
2 prototypes
Late 2010's - present
Series production
Producer
Russia - Motovilikha Plant
Designations
2S31
GRAU index
Vena
Nickname
Notable users
Russia
Azerbaijan

Description


Introduction

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.

Layout

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, advanced fire control system and an active protection system.

Firepower

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 rifled, 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 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 type. Maximum rate of fire is quoted as 8 to 10 rpm.

Mobility

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 water jet.

Protection

The steel armor protects the crew from small arms fire and shells splinters. Since the mortar is breech loaded the 2S31 is operated from under armor protection. The prototypes were fitted with the Shtora-1 active protection system, but this may not be fitted to all units in service. NBC protection and smoke grenade launchers are fitted as well.

Users

The 2S31 Vena is in service with Russian forces, albeit in limited numbers. The 2S31 has been exported to Azerbaijan is still marketed for export.

Details


Facts 2S31 Vena
General
Origin
Russia
Type
Self-propelled mortar
Crew
4
Dimensions
Weight
19.1 t combat load
Length
7.51 m gun forward
6.86 m hull
Width
3.37 m
Height
3.44 m
Main armament
Type
120mm 2A80 rifled gun-mortar
Ammunition
70 shells
Elevation
-4 to +80 degrees
Traverse
360 degrees
Rate of fire
8 - 10 rpm max
Range
Up to 14 km with RAP
Up to 7 km with standard shells
Secondary armament
Type
7.62mm PKTM machine gun
Mount
Remote weapon station on turret roof
Traverse
-90 to +90 degrees
Automotive
Chassis
Tracked chassis, 6 roadwheels
Idler front and drive sprocket rear
Ground pressure
0.61 kg/cm^2
Suspension
Torsion bar
Engine
UTD-29 diesel
Power output
450 hp
Mobility
Max speed
70 km/h on road
10 km/h afloat
Range
600 km on road
Power to weight ratio
24 hp/t
Obstacle crossing
Ground clearance
0.45 m
Wall
0.8 m
Trench
2.5 m
Fording
Amphibious
Protection
Armor type
Steel
Armor thickness
Up to 10 mm
NBC system
Yes
Smoke
2x6 Type 902A Tucha smoke grenade dischargers
Active protection system
Shtora-1

Related articles


2S23 Nona-SVK

The 2S31 Vena was developed using lessons learned from earlier gun/mortars such as the wheeled 2S23 Nona.