2S4 Tyulpan M-1975
240mm self-propelled mortar carrier on tracked armored - Russia
The 2S4 Tyulpan is Russian-made 240mm caliber self-propelled mortar carrier. It was developed in the early 1970s by the Uraltransmash Works, with the 240 mm 2B8 mortar system being developed by the Perm Machine Construction Works. This mortar system reached full operational capability with the former Soviet Army in 1975. The 2S4 was developed in the early 1970s by the Uraltransmash Works, with the 240 mm 2B8 mortar system being developed by the Perm Machine Construction Works. The 2S4 was used by the Russian army during combat in Chechnya.
2S4 Tyulpan variants:
- 2S4M: A new upgraded version of the standard 2S4
The 2S4 Tyulpan is fitted with a 240 mm mortar. The 240 mm smoothbore mortar, designated the 2B8, is carried complete with its base plate in the horizontal position on top of the hull and is pivoted at the rear. In the firing position, the mortar base plate rests on the ground. The 240 mm mortar has powered elevation from +50 to +80º with a powered traverse of 10º left and right. Just behind the driver position, there is a small turret for the commander which is equipped with an externally mounted 7.62 mm PKT machine gun. The mortar is fired by either electrical or mechanical means and two basic types of 240 mm mortar bombs are fired. A conventional high-explosive fragmentation bomb (3OF-864), which weighs 130 kg and has a maximum range of 9,650 m, and a high-explosive fragmentation rocket-assisted projectile weighing 228 kg with a maximum range of 18,000 m. The minimum range is 800 m. The 240 mm mortar has powered elevation from +50 to +80º with a powered traverse of 10º left and right. The rate of fire at +60° elevation is 1 round in 62 sec. and 1 round every 77 sec. at +80°. The 240 mm mortar system is aimed with a hydro-electric drive system by remote control. The mortar system 2S4 Tyulpan can fire a wide range of bombs as conventional high-explosive fragmentation, with a weight of 130 kg and has a maximum range of 9,5 km, high-explosive fragmentation rocket-assisted projectile with a weight of 228 kg and a maximum range of 18,000 m, nuclear and chemical munitions. Mortar bombs are kept in two drums located along the hull sides. Russian sources have stated that the tactical nuclear and chemical munitions are now no longer in service. The Russians also indicate that the 2S4 Tyulpan can fire the Smelchak laser-guided mortar projectile.
|Design and protection|
The hull of the 240 mm self-propelled mortar 2S4 Tyulpan is of all-welded steel armor construction that provides protection for the crew against the firing of small arms fire and artillery shell splinters. The 2S4 has a crew of four with the other five crew members being carried in the support vehicle. The mortar features a typical configuration and is arranged on the vehicle roof.
|The 240mm mortar system is mounted on a modified chassis of the tracked chassis used by the SA-4 Ganef 2K1 Krug air defense missile system. The 2S4 Tyulpan is motorized with a V-59 V-12 diesel engine developing 520 hp. The engine is mounted at the front of the hull, with a crew compartment and mortar system at the rear. The torsion bar suspension on each side consists of six dual rubber road wheels with the drive sprocket at the front, idler at the rear, and four track return rollers. The vehicle is able to reach a maximum road speed of 60 km/h with a maximum cruising range of 500 km.|
|The driver position is equipped with day periscopes for forwarding observation. The center one can be replaced by a passive night vision device. The 2S4 Tyulpan is also equipped with an NBC (Nuclear, Bacteriologic, and Chemical) protection system as most of the combat vehicles in the Russian army. An infrared searchlight is mounted at the left of the PKT 7.62 mm machine gun.|
|One 240 mm 2B8 mortar and one PKT 7.62 mm machine gun||Protection against small arms and artillery shell splinters.|
|Russia, Syria||27,500 kg|
|Russia||60 km/h maximum road speed|
|Infrared night vision, NBC protection system.||500 km|
|4 + 5 for reloading||Length: 7.94 m; Width: 3.25 m; Height: 3.22 m|
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