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SS-N-5
The R-21 (russian: Р-21; NATO: SS-N-5 'Sark/Serb'; GRAU: 4K55) was a submarine-launched ballistic missile in service with the Soviet Union between 1963 and 1989. It was the first Soviet nuclear missile that could be launched from a submerged submarine, and also had twice the range of earlier missiles. It replaced the R-11FM and R-13 (SS-N-4) on many Golf and Hotel-class submarines, and was in turn superseded by the R-27 (SS-N-6 'Serb') missile carried by Yankee-class submarines. Development Development of the R-15 and R-21 was initially assigned to Mikhail Yangel's Yuzhnoye Design Office (OKB-586) on 20 March 1958. The project was transferred to Viktor Makeyev's SKB-385 on 17 March 1959. It was intended for the ''Golf''-class submarines (Project 629B); the complete missile system was called the D-4 weapon complex. The 4th Research Institute had been conducting trials of underwater missile launch systems since 1955 with modified Scuds but the first successful launch wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine-launched Ballistic Missile
A submarine-launched ballistic missile (SLBM) is a ballistic missile capable of being launched from submarines. Modern variants usually deliver multiple independently targetable reentry vehicles (MIRVs), each of which carries a nuclear warhead and allows a single launched missile to strike several targets. Submarine-launched ballistic missiles operate in a different way from submarine-launched cruise missiles. Modern submarine-launched ballistic missiles are closely related to intercontinental ballistic missiles (ICBMs), with ranges of over , and in many cases SLBMs and ICBMs may be part of the same family of weapons. History Origins The first practical design of a submarine-based launch platform was developed by the Germans near the end of World War II involving a launch tube which contained a V-2 ballistic missile variant and was towed behind a submarine, known by the code-name ''Prüfstand XII''. The war ended before it could be tested, but the engineers who had worked o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hotel-class Submarine
The Hotel class is the general NATO classification for a type of nuclear-powered ballistic missile submarine that was launched by the Soviet Union around 1959. The Soviet designation was Project 658. Design The development of the submarine, designed to carry the D-2 launch system and R-13 missiles, was approved on 26 August 1956. Work on the design began in September 1956, the technical project was completed in the first quarter of 1957. The duties of the chief designer of Project 658 were originally assigned to the chief engineer of OKB-18, P.Z. Golosovskiy. In February 1958 project management was transferred to I.V. Mikhaylov, who in October 1958 had replaced S.N. Kovalev. From the outset the deputy of the chief designer was I.D. Spasskiy. The Hotel design was based on the Project 627 , the first Soviet nuclear submarines. They were modified by adding the missile compartment from the s. Additionally, the Hotels had small horizontal hydroplanes for better maneuverability and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viktor Makeyev
Viktor Petrovich Makeyev (also Makeev; russian: Ви́ктор Петро́вич Маке́ев; 25 October 1924 – 25 October 1985) was a Soviet engineer in the Soviet space program who was also a central and founding figure in development of Submarine-launched ballistic missile (SLBM) for the Soviet Navy. Work Makeyev's work has resulted in three generations of submarine-launched ballistic missiles being used by the Russian Navy. Among these were: ;First generation * R-11FM – the first Soviet SLBM. * R-13 * R-17 – known by NATO as '' Scud-B'' * R-21 (SS-N-5 "Sark") – the first Soviet rocket with underwater launch (1963) ;Second generation * R-27 – the first rocket with factory fuelling (1968) * R-27K * R-29 – the world first intercontinental SLBM (1974) ;Third generation * R-29R – the first intercontinental SLBM with MRV (1977) * R-39 – the first intercontinental SLBM with MIRV (1983) * R-29RM – a complex rocket of very high technical perf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golf-class Submarine
Project 629 (Russian: проект–629, ''Projekt-629''), also known by the NATO reporting name Golf, was a class of diesel-electric ballistic missile submarines that served in the Soviet Navy. All boats of this class had left Soviet service by 1990, and have since been disposed of. According to some sources, at least one Golf-class submarine was operated by China, to test new submarine-launched ballistic missiles (SLBMs). Class history Project 629 was started in the mid-1950s along with the D-2 missile launch system, which it was to carry, and was based on the Foxtrot-class submarine. The design task was assigned to OKB-16, one of the two predecessors (the other being SKB-143) of the Malakhit Marine Engineering Bureau, which would eventually become one of the three Soviet/Russian submarine design centers, along with the Rubin Design Bureau and the Lazurit Central Design Bureau. The submarine was originally designed to carry three R-11FM ballistic missiles with a range ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonka (fuel)
Tonka (also TONKA-250 and R-Stoff) is the name given to a German-designed rocket propellant first used in the Wasserfall missile, and recently used by North Korea. It was used in the Soviet Union under the name TG-02, for example in the engine designs of the A.M. Isayev Chemical Engineering Design Bureau. Its name is a reference to the tonka bean. Being invented during the Second World War, it has no connection to the similarly named toys. Its composition is approximately 50% triethylamine and 50% xylidine, most commonly used with nitric acid or its anhydrous nitric oxide derivatives (classified as the AK-2x family in the Soviet Union) as the oxidiser; the combination is hypergolic and has a maximum practical specific impulse of approximately at sea level, with the latter figure stated as a specification for the R-21 Submarine Launched Ballistic Missile, first fielded in 1963. The Soviet Union reverse-engineered the Wasserfall missile and investigated the use of hypergolic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R-11FM
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. 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 with SKB-385 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triethylamine
Triethylamine is the chemical compound with the formula N(CH2CH3)3, commonly abbreviated Et3N. It is also abbreviated TEA, yet this abbreviation must be used carefully to avoid confusion with triethanolamine or tetraethylammonium, for which TEA is also a common abbreviation. It is a colourless volatile liquid with a strong fishy odor reminiscent of ammonia. Like diisopropylethylamine (Hünig's base), triethylamine is commonly employed in organic synthesis, usually as a base. Synthesis and properties Triethylamine is prepared by the alkylation of ammonia with ethanol: :NH3 + 3 C2H5OH → N(C2H5)3 + 3 H2O The pKa of protonated triethylamine is 10.75,David Evans Research Group and it can be used to prepare buffer solutions at that pH. The |
Nitrogen Tetroxide
Dinitrogen tetroxide, commonly referred to as nitrogen tetroxide (NTO), and occasionally (usually among ex-USSR/Russia 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 units) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iodine
Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at , and boils to a violet gas at . The element was discovered by the French chemist Bernard Courtois in 1811 and was named two years later by Joseph Louis Gay-Lussac, after the Ancient Greek 'violet-coloured'. Iodine occurs in many oxidation states, including iodide (I−), iodate (), and the various periodate anions. It is the least abundant of the stable halogens, being the sixty-first most abundant element. As the heaviest essential mineral nutrient, iodine is required for the synthesis of thyroid hormones. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities. The dominant producers of iodine today are Chile and Japan. Due to its high atomic number and ease of attachment to organic compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasserfall
The ''Wasserfall Ferngelenkte FlaRakete'' (Waterfall Remote-Controlled A-A Rocket) was a German guided supersonic surface-to-air missile project of World War II. Development was not completed before the end of the war and it was not used operationally. The system was based on many of the technologies developed for the V-2 rocket program, including the rocket itself, which was essentially a much scaled-down version of the V-2 airframe. The rocket motor used new fuels as it was expected to be stored in ready-to-fire form for months, and the guidance system used external fins for control instead of relying entirely on the steerable rocket motor exhaust. Among the many development problems, control of the high-speed rocket was a significant concern, leading to the development of a radio control system where the operator sat in a reclining chair so they could see the target as it passed overhead. Another significant problem was the lack of a suitable proximity fuse, which was require ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NATO Reporting Name
NATO reporting names are code names for military equipment from Russia, China, and historically, the Eastern Bloc (Soviet Union and other nations of the Warsaw Pact). They provide unambiguous and easily understood English words in a uniform manner in place of the original designations, which either may have been unknown to the Western world at the time or easily confused codes. For example, the Russian bomber jet Tupolev Tu-160 is simply called "Blackjack". NATO maintains lists of the names. The assignment of the names for the Russian and Chinese aircraft was once managed by the five-nation Air Standardization Coordinating Committee (ASCC), but that is no longer the case. American variations The United States Department of Defense (DOD) expands on the NATO reporting names in some cases. NATO refers to surface-to-air missile systems mounted on ships or submarines with the same names as the corresponding land-based systems, but the US DoD assigns a different series of numbers with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xylidine
Xylidine can refer to any of the six isomers of xylene amine, or any mixture of them. The chemical formula of xylidines is C8H11N or, more descriptively, (CH3)2C6H3NH2. The CAS number for the isomer mixture is . They are colorless solids or liquids, although commercial samples can appear yellow or darker. They are miscible with ethanol and diethyl ether and slightly soluble in water. Xylidines are used in production of pigments and dyestuffs, and various antioxidants, agrochemicals, pharmaceuticals, hypergolic propellants, and many other organic chemicals. In World War II, xylidine was an important antiknock agent in very high performance aviation gasolines. Its purpose was to permit high levels of boost pressure in multiple-stage turbochargers, and thus high power at high altitudes, without causing detonation that would destroy the engine. The high pressures brought high temperatures of inlet air, making engines prone to knock. This use and storage stabilization methods were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
