| 2S31 Vena | |
| Origin: | Russia |
| Type: | Self-propelled mortar |
| Is Ranged: | yes |
| Is Artillery: | yes |
| Is Vehicle: | yes |
| Service: | 2014–present |
| Design Date: | 1980–2007 |
| Production Date: | 1996 |
| Length: | 7m (23feet) |
| Width: | 3m (10feet) |
| Height: | 3m (10feet) |
| Weight: | 19.1t |
| Rate: | 8-10 rounds per minute |
| Max Range: | 7.2km-13kmkm (04.5miles-08mileskm) |
| Elevation: | -4° to +80° |
| Traverse: | 360° |
| Suspension: | Individual torsion bar |
| Speed: | 70km/h |
| Vehicle Range: | 600km (400miles) |
| Primary Armament: | 2A80 120 mm mortar |
| Secondary Armament: | 7.62 mm PKTM machine gun |
| Engine: | Diesel UTD-29 |
| Crew: | 4 |
| Engine Power: | 340kW |
| Pw Ratio: | 19.4kW per ton |
The 2S31 Vena (Russian: "2С31 Вена") is a Russian amphibious self-propelled 120 mm mortar system. "2S31" is its GRAU designation.
The 2S31 consists of a 120mm 2A80 rifled gun-mortar mounted on the chassis of the BMP-3 infantry combat vehicle.[1] It was developed by Joint Stock Venture "Plants of Motovilikha" (Russian: ОАО "Мотовилихинские заводы"). The 2S31's turret is equipped with digital automated fire control system, navigation system, and optical/electronic reconnaissance and target acquisition system. Its 2A80 gun-mortar is capable of launching a high-explosive mortar projectile with a maximum range of 18000m (59,000feet).[1] The vehicle is protected by a welded aluminium hull to protect against small arms fire and shrapnel.[2] It can also fire armour-piercing projectiles that can penetrate up to 650mm of steel plate at ranges of up to 1km (01miles). A separate sighting system is used when engaging in direct fire mode.[3]
Reportedly first combat use of Vena was during Second Nagorno-Karabakh War.[4]
In September 2023, Vena appeared in Vesti program during the report about Russian troops fighting near Bakhmut, confirming its use during Russian invasion of Ukraine.[5]