Soltam Systems of Haifa, Israel, manufactures the Atmos 2000 155mm self-propelled artillery system. The Atmos artillery system is available with 155mm 39, 45 and 52 calibre barrels. The development and test phase of the program has been successfully completed and the system has entered full-scale production. As an option, the Atmos 2000 155mm 45 calibres can also be equipped with a Russian 130mm M-46 gun.
The Atmos artillery system weighs 22,000kg. The system is transportable in a C-130 Hercules medium transport aircraft and does not require heavy equipment transporters in order to be relocated over long distances.
Atmos began trials with the Israeli Defence Force in 2006
Atmos 2000 155mm howitzer armament
The Atmos system uses all NATO standard 155mm ammunition.
The 155mm 52 calibre Atmos has demonstrated a maximum target range of 41km, using an Extended Range Full Bore Base Bleed (ERFB-BB) projectile. The range using a NATO L15 high explosive projectile is 30km. Atmos also fires the older standard M107 High Explosive projectile and has a range of 22km. Atmos 2000 carries 27 projectiles and charges.
Extended Range Full Bore Base Bleed (ERFB-BB) projectile
Main combat tasks:
- neutralization of sheltered and unsheltered enemy war materiel (including amour materiel)
- neutralization of enemy manpower
- neutralization of fortified and non-fortified point and area targets
The 155 mm ERFB long range artillery projectile family is representing a new generation of long range artillery projectile designed for using with modern towed and self-propelled 155 mm weapons with 39, 45 and 52 calibre barrel length.
The M02 155 mm ERFB/BB projectile design includes base bleed (BB) unit family providinig important range increase, due to using of efficient composite propellant charge. With using of standard BB unit (in production) max. range is reaching 42 km, while with more advanced BB unit max. range is reaching of more than 44 km.
The M02 155 mm ERFB/BB projectile with 42 km range s in full rate serial production, and 44 km range version is in development stage.
Source yugoimport.com – for example
155 mm HE ERFB RA/BB very long range artillery projectile (VLAP-Rocket Assistance/Base Bleed)
The 155 mm HE ERFB RA/BB (VLAP) projectile belongs to new generation of very long range artillery projectiles designed for importantly improving operational range performances of a modern towed and self-propelled 155 mm gun – howitzers with 39, 45 and 52 calibre barrel length. The projectile design combines rocket motor and base bleed units in single projectile. Hybrid rocked assisted/base bleed projectile is extending the operational range of 155mm gun-howitzers from 10+ km to more than 20 km in comparison with standard ERFB/BB projectiles, depending on the barrel length and charge used.
It complements existing HE, HE ERFB/BT and HE ERFB/BB ammunition systems providing greater ranges, with no special training or logistic. 155 mm HE ERFB RA/BB enables users to engage enemy targets at greater ranges, whilst being well beyond the range of their counter battery fire. It also enables long range harassment fire onto enemy logistic lines, forcing them to deploy an additional 10 – 20 kilometres from the front edge of the battle area. Its terminal effectiveness (blast and fragmentation) is due to smaller HE charge slightly different, but not importantly lower than HE ERFB/BB round.
Achieved results: 33% increase in range comparing to standard HE ERFB/BB base bleed projectiles (from 30.3 km to 40.8 km for 39-barrel systems and from 42 km to ~56 km with 52-barrel systems.
The unique projectile design enables simultaneously using of rocket propellant (by using of specially designed nozzles) and base bleed charges.
Projectile main characteristics:
- Maximum range ~56km
- Muzzle velocity ~925m/s
- Rocket motor total impulse of : >6500 Ns
- Rocket motor propellant charge weight: ~3 kg
- Rocket motor specific impulse: >2170 Ns/kg
- Projectile total weight: 48 kg
- Projectile warhead section weight 30 kg
Source yugoimport.com – for example
Atmos is fitted with a hydraulic power pack for operation of the load assist systems, for aiming and for operation of the spades.
The system uses a horizontal sliding breech opening to the right and is fitted with a self-sealing metal obturating ring. The system is fitted with two pneumatic equilibrators, single cylinder hydraulic buffer and hydro-pneumatic recuperator. The recoil length is between 850mm to 1,100mm.
The high firing rate of three projectiles per 20 seconds is achieved by using a unique new load assist device. Sustained firing rate is 70 projectiles in 60 minutes.
Operation of the Atmos 2000 atrillery system
The artillery system is operated by a crew of four or six, including two loaders.
When the firing position site has been selected, two large hydraulically operated stabilisation spades are lowered at the rear of the vehicle on either side.
Target information is supplied by a surveillance patrol or by a Forward Observation Officer to the Atmos 2000 unit. The computerised Advanced Fire and Control System (AFCS) fitted on the Atmos 2000 includes navigation and aiming systems and ballistic computation system.
The AFCS displays the target information, selects the gun traverse and elevation and lays the weapon on the target. The weapon elevation and traverse is hydraulically operated. The weapon system can also be operated manually.
ATMOS for the Thai Army has a number of improvements. It was developed in cooperation with Thailand’s military industrial complex. Its development commenced in 2012 and the new truck mounted howitzer was revealed in 2013. This artillery system has a shorter 155 mm/L39 gun. It is fitted with an armored cab. Many of the gun’s systems are automated. It is operated by a crew of three or four men. The Thai ATMOS will be license-produced in Thailand. By 2016 it is planned to deliver first five artillery systems of Thai origin. Currently Thai Army requirement is only for six of these artillery systems; (Note it is actually 18 units and the gun is L52 not L39)
ATROM, Romanian variant of the ATMOS 2000, mounted on a locally developed truck chassis.
- 41 km – 52 calibre
- – 49 calibre
- – 39 calibre
- Rate of fire
- Burst – 3 round within 15 sec
- Rapid – 5 round within 1 min
- Sustained – >80 round an hour
- Aiming resolution – 1 artillery mil
- Deployment time – ~1.5 minute to first shot
Thailand assembles new howitzer: Here
ATMOS 2000 – Tatra 6X6 howitzer vehicle
A high mobility Tatra 6×6 truck has been selected for the first production Atmos 2000 artillery systems. The maximum road speed is 80km/h and the range is 1,000km. The V-12 diesel engine is rated at 315hp at 2,200rpm. The ten-speed transmission has power-assisted mechanical gear shifting. (Note engine is likely a V-8 according to Tatra data)
Atmos can be installed on a wide range of wheeled vehicle chassis according to the customer country’s requirements. A wheeled rather than a tracked vehicle was selected because it provides very much higher strategic manoeuvrability, lower procurement price, lower through life cost and easier operation and maintenance. Wheeled vehicles are faster than tracked vehicles and have a greater operational range.
The 6×6 Tatra truck, built under licence in India, has very good off road performance. The ground clearance is 0.4m and the Atmos 2000 can negotiate 0.6m vertical steps, 0.9m trenches and can ford to a depth of 1.40m.
The cab is armour protected and withstands small arms fire and shell fragments.
|Entered service||2004 (?)|
|Crew||4 – 6 men|
|Dimensions and weight|
|Length (gun forward)||9.5 m|
|Main gun||155 mm gun-howitzer|
|Barrel length||52 calibers|
|Maximum firing range||30 – 41 km|
|Maximum rate of fire||4 – 9 rpm|
|Elevation range||? to + 70 degrees|
|Traverse range||50 degrees|
|Main gun||32 rounds|
|Engine power||315 hp|
|Maximum road speed||80 km/h|
|Range||1 000 km|
|Vertical step||0.6 m|
Technical data military-today.com
Tatra 6×6 HIGH MOBILITY HEAVY DUTY CHASSIS
TATRA T3C-928-90 Engine
|Engine||TATRA T3C-928-90, EURO 3, 300 kW, 2,100 Nm/1,000 RPM|
|Transmission||TATRA 14 TS 210L, semiautomatic split, 14-speed|
|Cab||without standard TATRA cab|
|Wheelbase||4,090 + 1,450 mm|
|Gross vehicle weight (max.)||29,000 kg|
|Payload (max.)||18,760 kg|
|Top speed||110 km/h|
|Superstructure||Chassis is built as a platform for various kinds of special vehicles that need: – superior drive-ability in difficult terrain – heavy armoured protection on top of the chassis – reliable chassis with low life-cycle costs.|
Tatra 6×6 data tatratrucks.com
Main material source army-technology.com