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R-17 Elbrus
The R-17 Elbrus (, named for Mount Elbrus), GRAU index 9K72 is a tactical ballistic missile, initially developed by the Soviet Union. It is also known by its NATO reporting name SS-1C Scud-B. The R-17 is one of several Soviet missiles to carry the reporting name Scud, and the most prolifically launched of the series, with a production run estimated at 7,000 (1960–1987). Also designated R-300 during the 1970s, the R-17 was derived from the R-11 Zemlya. It has been operated by 32 countries and manufactured in four countries outside the Soviet Union. It is still in service with some. The North Koreans reverse-engineered it as the Hwasong-5. History The first mock-up was designed and built by Makeyev in 1958–1959, before the programme was transferred to the Votkinsk Machine Building Plant in 1959 for mass production. The first launch was conducted in 1961, and it entered service in 1962, mounted on the 2P19 tracked transporter erector launcher (TEL). During the 1960s the Sovie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poznań
Poznań ( ) is a city on the Warta, River Warta in west Poland, within the Greater Poland region. The city is an important cultural and business center and one of Poland's most populous regions with many regional customs such as Saint John's Fair, Poznań, Saint John's Fair (''Jarmark Świętojański''), traditional St. Martin's croissant, Saint Martin's croissants and a local dialect. Among its most important heritage sites are the Renaissance in Poland, Renaissance Old Town, Poznań Town Hall, Town Hall and Poznań Cathedral. Poznań is the fifth-largest List of cities and towns in Poland#Cities, city in Poland. As of 2023, the city's population is 540,146, while the Poznań metropolitan area (''Metropolia Poznań'') comprising Poznań County and several other communities is inhabited by over 1.029 million people. It is one of four historical capitals of medieval Poland and the ancient capital of the Greater Poland region, currently the administrative capital of the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cluster Munition
A cluster munition is a form of air-dropped or ground-launched explosive weapon that releases or ejects smaller submunitions. Commonly, this is a cluster bomb that ejects explosive bomblets that are designed to kill personnel and destroy vehicles. Other cluster munitions are designed to destroy runways or electric power transmission lines. Because cluster bombs release many small bomblets over a wide area, they pose risks to civilians both during attacks and afterwards. Unexploded bomblets can kill or maim civilians and unintended targets long after a conflict has ended, and are costly to locate and remove. This failure rate ranges from 2 percent to over 40 percent. Cluster munitions are prohibited for those nations that ratified the Convention on Cluster Munitions, adopted in Dublin, Ireland, in May 2008. The Convention entered into force and became binding international law upon ratifying states on 1 August 2010, six months after being ratified by 30 states. As of 10 F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R-11 Zemlya
The R-11 Zemlya (), GRAU index 8A61 was a Soviet tactical ballistic missile. It is also known by its NATO reporting name SS-1b Scud-A. It was the first of several similar Soviet missiles to be given the reporting name Scud. Variant R-11M was accepted into service, with GRAU index 9K51 (9К51). Origin The R-11 originated from a 1951 requirement for a ballistic missile with similar performance to the German V-2 rocket, but half its size. With the Wasserfall, an anti-aircraft version of the V-2, as a model the R-11 was developed by engineer Victor Makeev, who was then working in OKB-1, headed by Sergey Korolyov. The two men agreed on the use of RG-1 as the fuel, but disagreed over which oxidizer to use, with Korolev favouring the use of liquid oxygen, while Makeev advocated the use of a storable but toxic oxidizer. Makeev's version, that first flew on 18 April 1953, was fitted with an Isayev engine using RG-1 and nitric acid. On 13 December 1953, a production order was passed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scud
A Scud missile is one of a series of tactical ballistic missiles developed by the Soviet Union during the Cold War. It was exported widely to both Second and Third World countries. The term comes from the NATO reporting name attached to the missile by Western intelligence agencies. The Russian names for the missile are the R-11 (the first version), and the R-17 (later R-300) Elbrus (later developments). The name Scud has been widely used to refer to these missiles and the wide variety of derivative variants developed in other countries based on the Soviet design. Scud missiles have been used in combat since the 1970s, mostly in wars in the Middle East. They became familiar to the Western public during the 1991 Persian Gulf War, when Iraq fired dozens at Saudi Arabia and Israel. In Russian service, it has been replaced by the 9K720 Iskander. Development The first use of the term ''Scud'' was in the NATO name SS-1b Scud-A, applied to the R-11 Zemlya ballistic missile. The e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reporting Name
Reporting may refer to * any activity that leads to reports * in particular business reporting * Data reporting * Sustainability reporting * Financial reporting * international reporting of financial information for tax purposes under the OECD's Common Reporting Standard *Journalism Journalism is the production and distribution of reports on the interaction of events, facts, ideas, and people that are the "news of the day" and that informs society to at least some degree of accuracy. The word, a noun, applies to the journ ... * Court reporting * Traffic reporting * Beat reporting * Operational reporting {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NATO
The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member states—30 European and 2 North American. Established in the aftermath of World War II, the organization implements the North Atlantic Treaty, signed in Washington, D.C., on 4 April 1949. NATO is a collective security system: its independent member states agree to defend each other against attacks by third parties. During the Cold War, NATO operated as a check on the threat posed by the Soviet Union. The alliance remained in place after the dissolution of the Soviet Union and the Warsaw Pact, and has been involved in military operations in the Balkans, the Middle East, South Asia, and Africa. The organization's motto is . The organization's strategic concepts include Deterrence theory, deterrence. NATO headquarters, NATO's main headquarter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tactical Ballistic Missile
A tactical ballistic missile (TBM), or battlefield range ballistic missile (BRBM), is a ballistic missile designed for short-range battlefield use. Typically, range (aeronautics), range is less than . Tactical ballistic missiles are usually mobile to ensure survivability and quick deployment, as well as carrying a variety of warheads to target enemy facilities, assembly areas, artillery, and other targets behind the front lines. Warheads can include conventional high explosive, Chemical warfare, chemical, Biological warfare, biological, or nuclear warheads. Typically tactical nuclear weapons are limited in their total yield compared to strategic nuclear weapons. Design Tactical ballistic missiles fill the gap between conventional rocket artillery and longer-range short-range ballistic missiles. Tactical missiles can carry heavy payloads deep behind enemy lines in comparison to rockets or gun artillery, while having better mobility and less expense than the more strategic thea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GRAU Index
The Main Missile and Artillery Directorate of the Ministry of Defense of the Russian Federation (), commonly referred to by its transliterated acronym GRAU (), is a department of the Russian Ministry of Defense. It is subordinate to the Chief of Armament and Munition of the Russian Armed Forces, a vice-minister of defense. The organization dates back to 1862 when it was established under the name Main Artillery Directorate (, GAU). The "R" from "rockets" was added to the title from 19 November 1960. The GRAU is responsible for assigning GRAU indices to Russian army ammunitions and equipment. As of April 2025, the Chief of the GRAU was Major General Aleksey Volkov. Arsenals Arsenals of the GRAU, according to Kommersant-Vlast in 2005, included the 53rd at Dzerzhinsk, Nizhniy Novogorod Oblast, the 55th in the Sklad-40 microraion at Rzhev, the 60th at Kaluga, the 63rd at Lipetsk, the 75th at Serpukhov south of Moscow, and the 97th at Skolin (all five in the Moscow Military Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Elbrus
Mount Elbrus; ; is the highest mountain in Russia and Europe. It is a dormant stratovolcano rising above sea level, and is the highest volcano in Eurasia, as well as the tenth-most prominent peak in the world. It is situated in the southern Russian republic of Kabardino-Balkaria in the western extension of Ciscaucasia, and is the highest peak of the Caucasus Mountains. Elbrus has two summits, both of which are dormant volcanic domes. The taller, western summit is ; the eastern summit is . The earliest recorded ascent of the eastern summit was on 10 July 1829 by a Circassian man named Khillar Khashirov, and the western summit in 1874 by a British expedition led by F. Crauford Grove and including Frederick Gardiner, Horace Walker and the Swiss guide Etymology The name ''Elbrus'' seems to have a connection with '' Alborz'' (also called Elburz), which is also the name of a long mountain range in northern Iran. The name is derived from Avestan ''Harā Bərəzait� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circular Error Probable
Circular error probable (CEP),Circular Error Probable (CEP), Air Force Operational Test and Evaluation Center Technical Paper 6, Ver 2, July 1987, p. 1 also circular error probability or circle of equal probability, is a measure of a weapon system's Accuracy and precision, precision in the military science of ballistics. It is defined as the radius of a circle, centered on the aimpoint, that is expected to enclose the landing points of 50% of the Round (firearms), rounds; said otherwise, it is the median error radius, which is a 50% confidence interval. That is, if a given munitions design has a CEP of 100 m, when 100 munitions are targeted at the same point, an average of 50 will fall within a circle with a radius of 100 m about that point. There are associated concepts, such as the DRMS (distance root mean square), which is the square root of the average squared distance error, a form of the standard deviation. Another is the R95, which is the radius of the circle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitric Acid
Nitric acid is an inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into nitrogen oxide, oxides of nitrogen. Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% , it is referred to as ''fuming nitric acid''. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterized as red fuming nitric acid at concentrations above 86%, or white fuming nitric acid at concentrations above 95%. Nitric acid is the primary reagent used for nitration – the addition of a nitro group, typically to an organic molecule. While some resulting nitro compounds are shock- and thermally-sensitive explosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as synthetic dyes and medicines (e.g. metronidazole). Nitric acid is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinitrogen Tetroxide
Dinitrogen tetroxide, commonly referred to as nitrogen tetroxide (NTO), and occasionally (usually among ex-USSR/Russian rocket engineers) as amyl, is the chemical compound N2O4. It is a useful reagent in chemical synthesis. It forms an equilibrium mixture with nitrogen dioxide. Its molar mass is 92.011 g/mol. Dinitrogen tetroxide is a powerful oxidizer that is hypergolic (spontaneously reacts) upon contact with various forms of hydrazine, which has made the pair a common bipropellant for rockets. Structure and properties Dinitrogen tetroxide could be regarded as two nitro groups (-NO2) bonded together. It forms an equilibrium mixture with nitrogen dioxide. The molecule is planar with an N-N bond distance of 1.78Å and N-O distances of 1.19Å. The N-N distance corresponds to a weak bond, since it is significantly longer than the average N-N single bond length of 1.45Å. This exceptionally weak σ bond (amounting to overlapping of the ''sp''2 hybrid orbitals of the two NO2 uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
