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2S4 Tyulpan
The 2S4 ''Tyulpan'' (often spelled ''Tulpan'', russian: 2С4 «Тюльпан»; en, tulip) is a Soviet 240 mm self-propelled heavy mortar. "2S4" is its GRAU designation. The Tyulpan is the largest mortar system in use today. History Following World War II, the Soviet Union developed two types of heavy infantry mortar in 160 and 240 mm calibres, both conventional albeit breech-loaded designs. Due to their relatively large dimensions, total mass and the heavy weight of their projectiles (and the M-240 in particular), these mortars could hardly hope to function in the field as infantry weapons, losing the features making such weapons desirable, that is their relatively simple operation, speed of deployment and mobility. To alleviate the obvious mobility concerns, the military leadership proposed to mount the heavy mortar on a self-propelled, tracked chassis with the guns installed externally on the chassis, rather than in an enclosed superstructure or turret. For f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar Carrier
A mortar carrier, or self-propelled mortar, is a self-propelled artillery piece in which a mortar is the primary weapon. Simpler vehicles carry a standard infantry mortar while in more complex vehicles the mortar is fully integrated into the vehicle and cannot be dismounted from the vehicle. Mortar carriers cannot be fired while on the move and some must be dismounted to fire. Evolution The mortar carrier has its genesis in the general mechanisation and motorisation of infantry in the years leading up to World War II. To move an infantry mortar and its crew various methods were developed, for example mounting the mortar on a wheeled carriage for towing behind a light vehicle, attaching the mortar and its permanently fixed baseplate to the rear of a vehicle — the entire assembly hinging from the horizontal for travel and to the vertical to fire, simply transporting the disassembled mortar (tube, baseplate and bipod) its crew and mortar bombs by truck or half-track. Provisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breechblock
A breechblock (or breech block) is the part of the firearm action that closes the breech of a breech loading weapon (whether small arms or artillery) before or at the moment of firing. It seals the breech and contains the pressure generated by the ignited propellant. Retracting the breechblock allows the chamber to be loaded with a cartridge. Breechblocks are categorised by the type or design of the mechanism by which it is locked or closed for firing. The firearm action more fully refers to the mechanism by which the operator actuates the opening and closing of the breech. Variants A way of closing the breech or chamber is an essential part of any breech-loading weapon or firearm. Perhaps the simplest way of achieving this is a break-action, in which the barrel, forestock and breech pivot on a hinge that joins the front assembly to the rear of the firearm, incorporating the rear of the breech, the butt and usually, the trigger mechanism. A breechblock is a separate compone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TNT Equivalent
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. The is a unit of energy defined by that convention to be , which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT. In other words, for each gram of TNT exploded, (or 4184 joules) of energy is released. This convention intends to compare the destructiveness of an event with that of conventional explosive materials, of which TNT is a typical example, although other conventional explosives such as dynamite contain more energy. Kiloton and megaton The "kiloton (of TNT)" is a unit of energy equal to 4.184 terajoules (). The "megaton (of TNT)" is a unit of energy equal to 4.184 petajoules (). The kiloton and megaton of TNT have traditionally been used to describe the energy output, and hence the destructive power, of a nuclear weapon. The TNT equivalent appears in various nuclear weapon control treaties, and has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2S4 Reloading
S4, S 4, Š-4, S.4 or S-4 may refer to: People * S4 (Dota player), Gustav Magnusson, Swedish ''Dota 2'' player * S4 (military), a logistics officer within military units Places * County Route S4 (California), a road in San Diego, California Science and mathematics Mathematics * S4 algebra, a variety of modal algebras, also called Interior algebra * Symmetric group S4 (S4), an abstract mathematical group * S4, a normal modal logic Chemistry * S4: Keep away from living quarters, a safety phrase in chemistry * Tetrasulfur (S4), an allotrope of sulfur Biology * Fourth heart sound, or S4, an abnormal heart sound often indicative of congestive heart failure or cor pulmonale * Fourth sacrum of the vertebral column in human anatomy * Sacral spinal nerve 4, a spinal nerve of the sacral segment Technology * S (programming language) version 4 * Hibernation a sleeping state in a computer * SG2 Shareable (Fire Control) Software Suite (S4) * Nikon Coolpix S4, a camera * Samsung Galaxy S4, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2S3 Akatsiya
The SO-152 (Russian: СО-152) is a Soviet 152.4 mm self-propelled gun developed in 1968, as a response to the American 155 mm M109 howitzer. Development began in 1967, according to the Resolution of the Council of Ministers of the Soviet Union from July 4, 1967. In 1968, the SO-152 was completed and in 1971 entered service. Its GRAU designation is 2S3 (2С3). The fighting vehicle also received the added designation ''Akatsiya'' (Акация), which is Russian for Acacia. Description The ''Akatsiya'' is armed with a 152.4 mm howitzer based on the Soviet 152.4 mm D-20 howitzer and is sometimes confused with the M109 self-propelled artillery. The artillery system was developed at the design bureau No. 9 of Sverdlovsk. The factory designation of the howitzer is D-22 and the GRAU designation, 2A33. The chassis was developed by Uraltransmash. The driver's and engine-transmission compartments are located in the front part of a hull, the fighting compartment with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counter-battery Fire
Counter-battery fire (sometimes called counter-fire) is a battlefield tactic employed to defeat the enemy's indirect fire elements (multiple rocket launchers, artillery and mortars), including their target acquisition, as well as their command and control components. Counter-battery arrangements and responsibilities vary between nations but involve target acquisition, planning and control, and counter-fire. Counter-battery fire rose to prominence in World War I. Counter-battery radar detects incoming indirect fire and calculates its point of origin. That location data can be sent by a communications link to friendly forces, who can then fire on the enemy positions, hopefully before they can reposition (the "scoot" part of shoot-and-scoot tactics). Counter-RAM systems track incoming rocket, artillery, and mortar fire and attempt to intercept and destroy the projectiles or provide early warning to the target area. Background Indirect fire was introduced so that artillery could fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donetsk People's Republic
The Donetsk People's Republic ( rus, Донецкая Народная Республика, Donetskaya Narodnaya Respublika, dɐˈnʲetskəjə nɐˈrodnəjə rʲɪˈspublʲɪkə; abbreviated as DPR or DNR, rus, ДНР) is a Territorial dispute, disputed entity created by Russian people's militias in Ukraine, Russian-backed separatists in eastern Ukraine, which claims Donetsk Oblast. It began as a Secession, breakaway state (2014–2022) and was then Annexation, annexed by Russia in 2022. The city of Donetsk is the claimed capital city. 2014 pro-Russian unrest in Ukraine, Pro-Russian unrest erupted in the Donbas region in response to the Ukrainian Revolution of Dignity. In April 2014, armed pro-Russian separatists seized government buildings and declared the Donetsk People's Republic (DPR) and Luhansk People's Republic (LPR) as sovereign state, independent states, which received no International recognition of the Donetsk People's Republic and the Luhansk People's Republi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unmanned Aerial Vehicle
An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controller and a system of communications with the UAV. The flight of UAVs may operate under remote control by a human operator, as remotely-piloted aircraft (RPA), or with various degrees of autonomy, such as autopilot assistance, up to fully autonomous aircraft that have no provision for human intervention. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications.Hu, J.; Bhowmick, P.; Jang, I.; Arvin, F.; Lanzon, A.,A Decentralized Cluster Formation Containment Framework for Multirobot Systems IEEE Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
War In Donbas (2014–2022)
The War in Donbas, russian: Война на Донбассе was an armed conflict in the Donbas region of Ukraine, part of the broader Russo-Ukrainian War. In March 2014, immediately following the Euromaidan protest movement and subsequent Revolution of Dignity, protests by pro-Russian, anti-government separatist groups arose in the Donetsk and Luhansk oblasts of Ukraine, collectively called the Donbas. These demonstrations began around the same time as Russia's annexation of Crimea, and were part of wider pro-Russian protests across southern and eastern Ukraine. Declaring the Donetsk and Luhansk People's Republics (DPR and LPR, respectively), armed Russian-backed separatist groups seized government buildings throughout the Donbas, leading to armed conflict with Ukrainian government forces. Ukraine launched a military counter-offensive against pro-Russian forces in April 2014, called the "Anti-Terrorist Operation" (ATO) from 2014 until it was renamed the "Joint Forces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OSCE
The Organization for Security and Co-operation in Europe (OSCE) is the world's largest regional security-oriented intergovernmental organization with observer status at the United Nations. Its mandate includes issues such as arms control, promotion of human rights, freedom of the press, and free and fair elections. It employs around 3,460 people, mostly in its field operations but also in its secretariat in Vienna, Austria, and its institutions. It has its origins in the mid-1975 Conference on Security and Co-operation in Europe (CSCE) held in Helsinki, Finland. The OSCE is concerned with early warning, conflict prevention, crisis management, and post-conflict rehabilitation. Most of its 57 participating countries are in Europe, but there are a few members present in Asia and North America. The participating states cover much of the land area of the Northern Hemisphere. It was created during the Cold War era as a forum for discussion between the Western Bloc and Eastern Bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
240 Mm Mortar M240
The Soviet 240 mm mortar M240 is a 240 millimeter (9.4 in) breech loading smoothbore heavy mortar that fires a 130 kilogram (290 lb) projectile. Description The mortar consists of a smooth-bored barrel with a breech and a breech-block frame, a frame with shock absorbers, mount with training and equilibrating mechanisms, a two-wheel traveling carriage with the suspension, a boom for changing from the firing to the traveling configuration, a baseplate and a towing bar with a lunette. The sights are carried separately and are mounted on the mortar only when firing. The shock absorbers are used to protect the sights from firing vibrations and also provide the link between the ordnance and the mount. It is also used when the mounting returns to the loading position after firing. The boom provides stability when firing and also has two winches to convert the mortar from the firing to the traveling configuration. It is mounted on a wheeled carriage that supports the cradle and ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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