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The 2S7 Pion was identified for the first time in 1975 in the Soviet Army and was called M-1975 by NATO (the 2S4 Tyulpan also received the M-1975 designation), whereas its official designation is SO-203 (2S7). It used a new-design chassis, partly based on T-72 and T-80 design,[1] carrying an externally mounted 2A44 203 mm gun on the hull rear.[citation needed] The vehicle is self-entrenching and has an overpressure CBRN defense system.[5] It was reported that the 12-metre (39 ft) long gun weighs 14.6 tons and has a service life of 450 rounds.[2]
There are multiple manufacturers: the chassis was made at the Kirov Factory, St. Petersburg, Russia, while the gun and mount were made at the Titan-Barrikady plant in Volgograd, Russia.[3]
The Malka modernization process in the late 2010s involved
substituting several of the Ukrainian-produced components, such as the
gearbox and engine, with new components manufactured in Russia at the Uraltransmash plant in Yekaterinburg.[6] The gun can fire the Kleshchevina nuclear shell.[7]
The 2S7 uses a tracked chassis that was designed specifically for
this artillery system. It uses a number of automotive components from
the T-72 and T-80 main battle tanks. It is powered by a V-46-I turbocharged liquid-cooled V12 diesel engine,[1] developing 750 horsepower (or 840[3]). It is also fitted with an auxiliary power unit, developing 24 hp and powering all systems when the main engine is shut down.[8]
The 2S7 carries a crew of fourteen; seven are carried by the Pion and seven in an auxiliary vehicle.[8]
It takes the crew about six minutes to set up and five minutes to
dismantle. It carries four 203 mm projectiles for immediate use. It is
capable of firing nuclear ammunition. The gun has a range of 37,500
metres (23.3 mi), but this can be extended to 55,500 metres (34.5 mi) by
using a rocket-assisted projectile.[8]
One interesting feature of the Pion is the firing alarm. Because the
blast of the weapon firing is so powerful – it can physically
incapacitate an unprepared soldier or crew member near it from
concussive force – the Pion is equipped with an audible firing alarm
that emits a series of short warning tones for approximately five
seconds prior to the charge being fired.[6]
The system carries four rounds of ammunition; four more rounds
are carried by the support vehicle. Due to the long range, the crew can
fire one or two rounds and leave position before the first round hits
the enemy position over 40 kilometres (25 mi) away.[inconsistent] This makes the 2S7 less susceptible to counter-battery fire[8] from an enemy with a counter-battery radar such as ARTHUR.
There are multiple manufacturers: the chassis was made at the Kirov Factory, St. Petersburg, Russia, while the gun and mount were made at the Titan-Barrikady plant in Volgograd, Russia.[3]
The Malka modernization process in the late 2010s involved
substituting several of the Ukrainian-produced components, such as the
gearbox and engine, with new components manufactured in Russia at the Uraltransmash plant in Yekaterinburg.[6] The gun can fire the Kleshchevina nuclear shell.[7]
The 2S7 uses a tracked chassis that was designed specifically for
this artillery system. It uses a number of automotive components from
the T-72 and T-80 main battle tanks. It is powered by a V-46-I turbocharged liquid-cooled V12 diesel engine,[1] developing 750 horsepower (or 840[3]). It is also fitted with an auxiliary power unit, developing 24 hp and powering all systems when the main engine is shut down.[8]
The 2S7 carries a crew of fourteen; seven are carried by the Pion and seven in an auxiliary vehicle.[8]
It takes the crew about six minutes to set up and five minutes to
dismantle. It carries four 203 mm projectiles for immediate use. It is
capable of firing nuclear ammunition. The gun has a range of 37,500
metres (23.3 mi), but this can be extended to 55,500 metres (34.5 mi) by
using a rocket-assisted projectile.[8]
One interesting feature of the Pion is the firing alarm. Because the
blast of the weapon firing is so powerful – it can physically
incapacitate an unprepared soldier or crew member near it from
concussive force – the Pion is equipped with an audible firing alarm
that emits a series of short warning tones for approximately five
seconds prior to the charge being fired.[6]
The system carries four rounds of ammunition; four more rounds
are carried by the support vehicle. Due to the long range, the crew can
fire one or two rounds and leave position before the first round hits
the enemy position over 40 kilometres (25 mi) away.[inconsistent] This makes the 2S7 less susceptible to counter-battery fire[8] from an enemy with a counter-battery radar such as ARTHUR.
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