The system is referred to as 2K22 under the GRAU index, though the army designation 9K22 is a valid alternative. A complete system or battery consists of six 2S6 combat vehicles armed with the 9M311 "Treugol'nik" (triangle) surface-to-air missile and two 2A38 30 mm cannon. These are accompanied by up to three 2F77 transloader trucks. The 9K22 is also associated with a variety of support facilities including the 2F55-1, 1R10-1 and 2V110-1 repair and maintenance vehicles, the MTO-AGZ workshop and the 9V921 test vehicle. These facilities provide maintenance for the 9K22 battery in the field as well as scheduled overhauls.
| 9K22 Tunguska NATO reporting name: SA-19 Grison | |
|---|---|
| Type | Tracked SAM system |
| Place of origin |  Soviet Union |
| Service history | |
| In service | 1982–present |
| Used by |  Belarus India Morocco Russia Soviet Union Ukraine |
| Wars | 2008 South Ossetia war |
| Production history | |
| Designer | KBP Instrument Design Bureau |
| Designed | 1970–1980 |
| Manufacturer | KBP Instrument Design Bureau |
| Unit cost | $16 million |
| Produced | 1976–present |
| Variants | 2K22 (Tunguska), 2K22M (Tunguska-M), 2K22M1 (Tunguska-M1) |
| Specifications (Tunguska-M1) | |
| Weight | 34,000 kg (75,000 lb) |
| Length | 7.93 m (30 ft) |
| Width | 3.24 m (10 ft 8 in) |
| Height | 4.01 m (13 ft 2 in) or 3.36 m (10 ft) (radar stowed) |
| Crew | 4 (vehicle commander, driver, gunner, radar operator) |
| | |
| Main armament | 8 × 9M311 (or 3M87), 9M311K, 9M311-1, 9M113-M1 or 57E6 missiles |
| Secondary armament | 2 × 30 mm 2A38M (1,904 rounds carried) |
| Engine | V-46-4 turbocharged V-12 water cooled 4-stroke diesel 780 hp |
| Suspension | Hydropneumatic |
| Ground clearance | 45 cm (1 ft 6 in) |
| Operational range | 500 km (310 mi) |
| Speed | 65 km/h (40 mph) |
The 2S6 combat vehicle uses the GM-352 and later GM-352M chassis developed and produced by the Minsk Tractor Plant (MTZ) which has six road wheels with hydropneumatic suspension on each side, a drive sprocket at the rear and three return rollers. The chassis are capable of fording to a depth of 0.8 meters, climbing gradients of up to 60% and side slopes of 30%. The GM-352 can cross a one meter vertical obstacle and a two meter trench. An NBC system is also integrated into the chassis, an automatic gear change and diagnostic capability are available with latest Tunguska-M1 which uses the new GM-5975 chassis developed and produced by MMZ. Overall the layout is similar to the previous ZSU-23-4 with a large central turret (designated the 2A40) containing the armament, sensors and three of the crew: the commander, gunner and radar operator. The driver sits in the front left of the hull, with a gas turbine APU to his right and the engine in the rear of the hull.
A parabolic E-band target acquisition radar is mounted on the rear top of the turret that when combined with the turret front mounted J-band monopulse tracking radar forms the 1RL144 (NATO:Hot Shot) radar system. The mechanically scanned target acquisition radar for the Tunguska-M1 offers a 360-degree field of view, a detection range of around 18 km and can detect targets flying as low as 15 m, the target acquisition radar can be stowed when in transit. A C/D-band IFF system is also fitted and designated 1RL138. The system is able to fire on the move using 30 mm cannons, although it must be stationary to fire missiles, the maximum target speed can be up to 500 m/s.
A battery of six Tunguska can automatically receive fire control information via an encrypted radio link, this allows targets to be distributed between individual units from a Ranzhir or PPRU battery command post, which can receive target information from either AWACS or early warning radar or in the case of the PPRU its own radar equipment.
