Self-propelled 120 mm mortar 2S9 “Nona-S” is designed to engage the non-sheltered and sheltered manpower, enemy weapons and combat equipment at the front line and the depth of the squadron. It also has the capability to destroy the defense constructions and tanks.
The self-propelled mortar is able to provide accurate direct fire, as well as fire from the sheltered firing sites, using mortars and rounds.
The body of the mortar is made from the armour aluminum welded sheets. The control compartment with the seat of the driver is located in the front central part of the mortar. The mortar commander seat is located to the left of the driver. The middle past of the body contains combat compartment with a revolving turret on the top. The combat compartment also contains the containers with ammunition. Engine compartment with a powerplant is located at the rear part of the mortar. The mortar turret is a welded one. The gunner seat with aiming devices is located on the left of the gun. The loader seat is on the right of the gun.
The 2S9 mortar uses a 120 mm mortar 2A5 with a conventional rifling. Barrel length is 24.2 caliber with 40 uniform grooves.
The gun has a combined semi-automatic breechblock with a plastic obturation ring, which, in the same time is a round rammer. Ramming is carried out with compressed air.
“Nona-S” has three scopes TNPO-170A located before the driver’s manhole. Two scopes TNPO-170A and a tank periscope TPK-2 are located by the commander’s manhole.
• HE-fragmentation 3OF49 with a time fuse 3V35;
• HE-fragmentation 3OF49 with a radiofuse AR-5;
• Rocket-assisted projectile 3OF50;
• All 120 mm mortars.
There are several variants of optional equipment:
• night-vision devices for the driver, outguard equipment;
• navigation systems;
• global positioning systems GLONASS, GPS.