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BM25 Musudan
The Hwasong-10 (), also known by the names BM-25 and Musudan (), is a mobile intermediate-range ballistic missile developed by North Korea. Hwasong-10 was first revealed to the international community in a military parade on 10 October 2010 celebrating the Workers' Party of Korea's 65th anniversary, although experts believe these were mock-ups of the missile. Hwasong-10 resembles the shape of the Soviet Union's R-27 Zyb submarine-launched missile, but is slightly longer. It is based on the R-27, which uses a 4D10 engine propelled by unsymmetrical dimethylhydrazine (UDMH) and nitrogen tetroxide (NTO). These propellants are much more advanced than the kerosene compounds used in North Korea's Scuds and Nodong missiles. Since April 2016 the Hwasong-10 has been tested a number of times, with two apparent partial successes and a number of failures. The Hwasong-10 was not shown in the April 2017 and February 2018 military parades, suggesting that the design had not been deployed. Assu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musu Dan
Musu Point or Musu Dan ( ko, , , "Cape of the Dancing Water" or "Waters") is a North Korean headland in the middle of the country's eastern coast along the Sea of Japan. It forms the eastern side of North Hamgyong's Hwadae County and the northern point of East Korea Bay. Names In the 19th century, Musu Point was variously known as .. or . It was known in Korean as .. During the Japanese occupation of Korea, it was known as Geography Musu Point is a promontory consisting of high reddish cliffs projecting boldly south but tapering down to the sea at its apex, which marks the northern end of East Korea Bay. It also forms the eastern end of a narrow but deep bay extending about west to Yongdae Gap.. The peak of the mountain forming the cape has been reckoned as . A rock high lies just south of the point. Another, considered to resemble two crouching dogs when approached from the north or south, lies just off the coast to its north. The area is subject to abnormal magnetic va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national republics; in practice, both its government and its economy were highly centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian SFSR. Other major cities included Leningrad (Russian SFSR), Kiev (Ukrainian SSR), Minsk ( Byelorussian SSR), Tashkent (Uzbek SSR), Alma-Ata (Kazakh SSR), and Novosibirsk (Russian SFSR). It was the largest country in the world, covering over and spanning eleven time zones. The country's roots lay in the October Revolution of 1917, when the Bolsheviks, under the leadership of Vladimir Lenin, overthrew the Russian Provisional Government ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khorramshahr Missile
Khorramshahr ( fa, خرمشهر , also romanized as ''Khurramshahr'', ar, المحمرة, romanized as ''Al-Muhammerah'') is a city and capital of Khorramshahr County, Khuzestan Province, Iran. At the 2016 census, its population was 170,976, in 47,380 households. Khorramshahr is an inland port city located approximately north of Abadan. The city extends to the right bank of the Shatt Al Arab waterway near its confluence with the Haffar arm of the Karun river. The city was destroyed in the Iran–Iraq War, with the 1986 census recording a population of zero. However, Khorramshahr was rebuilt after the war, and more recent censuses show that the population has returned to its approximate pre-war level. History The area where the city exists today was originally under the waters of the Persian Gulf. It later became part of the vast marshlands and the tidal flats at the mouth of the Karun River. The small town known as ''Piyan'', and later ''Bayan'' appeared in the area no sooner t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lofted Trajectory
Projectile motion is a form of motion experienced by an object or particle (a projectile) that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only. In the particular case of projectile motion of Earth, most calculations assume the effects of air resistance are passive and negligible. The curved path of objects in projectile motion was shown by Galileo to be a parabola, but may also be a straight line in the special case when it is thrown directly upwards. The study of such motions is called ballistics, and such a trajectory is a ballistic trajectory. The only force of mathematical significance that is actively exerted on the object is gravity, which acts downward, thus imparting to the object a downward acceleration towards the Earth’s center of mass. Because of the object's inertia, no external force is needed to maintain the horizontal velocity component of the object's motion. Taking other fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Fuming Nitric Acid
Red fuming nitric acid (RFNA) is a storable oxidizer used as a rocket propellant. It consists of 84% nitric acid (), 13% dinitrogen tetroxide and 1–2% water. The color of red fuming nitric acid is due to the dinitrogen tetroxide, which breaks down partially to form nitrogen dioxide. The nitrogen dioxide dissolves until the liquid is saturated, and produces toxic fumes with a suffocating odor. RFNA increases the flammability of combustible materials and is highly exothermic when reacting with water. It is usually used with an inhibitor (with various, sometimes secret, substances, including hydrogen fluoride; any such combination is called ''inhibited RFNA'', ''IRFNA'') because nitric acid attacks most container materials. Hydrogen fluoride for instance will passivate the container metal with a thin layer of metal fluoride, making it nearly impervious to the nitric acid. It can also be a component of a monopropellant; with substances like amine nitrates dissolved in it, it can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerosene
Kerosene, paraffin, or lamp oil is a combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in aviation as well as households. Its name derives from el, κηρός (''keros'') meaning "wax", and was registered as a trademark by Canadian geologist and inventor Abraham Gesner in 1854 before evolving into a generic trademark. It is sometimes spelled kerosine in scientific and industrial usage. The term kerosene is common in much of Argentina, Australia, Canada, India, New Zealand, Nigeria, and the United States, while the term paraffin (or a closely related variant) is used in Chile, eastern Africa, South Africa, Norway, and in the United Kingdom. The term lamp oil, or the equivalent in the local languages, is common in the majority of Asia and the Southeastern United States. Liquid paraffin (called mineral oil in the US) is a more viscous and highly refined product which is used as a laxative. Paraffin wax is a waxy solid extracted from pet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unha-3
The Unha or Eunha ( ko, 은하, 銀河, "Galaxy") is a North Korean expendable carrier rocket, which partially utilizes the same delivery system as the Taepodong-2 orbital launch system. History North Korea's first orbital space launch attempt occurred on August 31, 1998, and was unsuccessful. This launch attempt was performed by a Paektusan-1 rocket, which used a solid motor third stage, a Scud-missile-based second stage, and a Nodong-1 based first stage. Nodong-1 was a North Korean-developed stage thought to be a scale-up of the old Soviet Scud missile. The Paektusan-1 stood tall, was in diameter, and weighed about 21 tonnes. Vehicle description The Unha's first stage consists of four clustered Nodong motors, which themselves are enlarged Scud motors. The second stage was initially thought to be based on the SS-N-6, although it, too, is now believed to be based on Scud technology. The third and last stage might be identical to the Iranian Safir's second stage which is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taepodong-2
The Taepodong-2 (TD-2, also spelled as Taep'o-dong 2) Federation of American Scientists, May 30, 2008 ( ko, 대포동 2호) is a designation used to indicate what was initially believed to be a n two or three-stage design that is the successor to the technology demonstrator. In 2012 the |
Hypergolic
A hypergolic propellant is a rocket propellant combination used in a rocket engine, whose components spontaneously ignite when they come into contact with each other. The two propellant components usually consist of a fuel and an oxidizer. The main advantages of hypergolic propellants are that they can be stored as liquids at room temperature and that engines which are powered by them are easy to ignite reliably and repeatedly. Common hypergolic propellants are difficult to handle due to their extreme toxicity and/or corrosiveness. In contemporary usage, the terms "hypergol" and "hypergolic propellant" usually mean the most common such propellant combination: dinitrogen tetroxide plus hydrazine and/or its relatives monomethylhydrazine (MMH) and unsymmetrical dimethylhydrazine (UDMH). History In 1935, Hellmuth Walter discovered that hydrazine hydrate was hypergolic with high-test peroxide of 80-83%. He was probably the first to discover this phenomenon, and set to work devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Fuel Rocket
A liquid-propellant rocket or liquid rocket utilizes a rocket engine that uses liquid propellants. Liquids are desirable because they have a reasonably high density and high specific impulse (''I''sp). This allows the volume of the propellant tanks to be relatively low. It is also possible to use lightweight centrifugal turbopumps to pump the rocket propellant from the tanks into the combustion chamber, which means that the propellants can be kept under low pressure. This permits the use of low-mass propellant tanks that do not need to resist the high pressures needed to store significant amounts of gasses, resulting in a low mass ratio for the rocket. An inert gas stored in a tank at a high pressure is sometimes used instead of pumps in simpler small engines to force the propellants into the combustion chamber. These engines may have a higher mass ratio, but are usually more reliable, and are therefore used widely in satellites for orbit maintenance. Liquid rockets can be monop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIRV
A multiple independently targetable reentry vehicle (MIRV) is an exoatmospheric ballistic missile payload containing several warheads, each capable of being aimed to hit a different target. The concept is almost invariably associated with intercontinental ballistic missiles carrying thermonuclear warheads, even if not strictly being limited to them. By contrast, a unitary warhead is a single warhead on a single missile. An intermediate case is the multiple reentry vehicle (MRV) missile which carries several warheads which are dispersed but not individually aimed. Only the United States, the United Kingdom, France, Russia, China and India are currently confirmed to have deployed MIRV missile systems. Pakistan is developing MIRV missile systems. Israel is suspected to possess or be in the process of developing MIRVs. The first true MIRV design was the Minuteman III, first successfully tested in 1968 and introduced into actual use in 1970. The Minuteman III held three small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transporter Erector Launcher
A transporter erector launcher (TEL) is a missile vehicle with an integrated tractor unit that can carry, elevate to firing position and launch one or more missiles. History Such vehicles exist for both surface-to-air missiles and surface-to-surface missiles. Early on, such missiles were launched from fixed sites and had to be loaded onto trucks for transport, making them more vulnerable to attack, since once they were spotted by the enemy they could not easily be relocated, and if they were it often took hours or even days to prepare them for launch once they reached their new site. Usually a number of TELs and TELARs are linked to one command post vehicle (CP or CPV). They may use target information from target acquisition, designation and guidance radar (TADAGR or TAR). Transporter erector launcher and radar A transporter erector launcher and radar (TELAR) is a type of TEL that also incorporates part or all of the radar system necessary for firing the surface-to-air missil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
