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KN Number
The KN number () is the designation used by the United States for describing North Korean missiles. Description The "KN" stands for "Korea, North", which is the reverse form of "North Korea". It is used by United States Forces Korea, United States military for designating North Korean missiles. The number following "KN" represents the order of the missile learned about by South Korea and the United States. For example, "Hwasong-11B, KN-24" is the 24th North Korean missile recognized by South Korea and the U.S. militaries. List of KN numbers Official numbers Unofficial numbers See also * Hwasong (missile family) * NATO reporting name References {{DPRK missiles Guided missiles of North Korea Naming conventions Code names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knudsen Number
The Knudsen number (Kn) is a dimensionless number defined as the ratio of the molecular mean free path length to a representative physical length scale. This length scale could be, for example, the radius of a body in a fluid. The number is named after Danish physicist Martin Knudsen (1871–1949). The Knudsen number helps determine whether statistical mechanics or the continuum mechanics formulation of fluid dynamics should be used to model a situation. If the Knudsen number is near or greater than one, the mean free path of a molecule is comparable to a length scale of the problem, and the continuum assumption of fluid mechanics is no longer a good approximation. In such cases, statistical methods should be used. Definition The Knudsen number is a dimensionless number defined as :\mathrm\ = \frac , where : \lambda = mean free path [L1], : L = representative physical length scale [L1]. The representative length scale considered, L, may correspond to various physical trai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hwasong-5
The Hwasong-5 () is a North Korean short-range ballistic missile (SRBM) derived from the Soviet R-17 Elbrus missile. It is one of several missiles with the NATO reporting name Scud-B. History North Korea received rocket artillery, surface-to-air missiles (SAMs), and anti-ship missiles from the Soviet Union in the 1960s and then from China in the 1970s. The range and accuracy of the 2K6 Luna were unsatisfactory, but the Soviets refused to supply ballistic missiles to limit tensions in Korea. North Korea sought a domestic missile-production capability by 1965, and began making military and industrial preparations shortly afterward. A joint development program with China of the DF-61 missile began in 1977, but was cancelled in 1978 due to Chinese domestic politics. North Korea received R-17s from Egypt in the late 1970s or early 1980s. North Korea supported Egypt during the Yom Kippur War and the countries had friendly relations. With relations between Egypt and the Soviet Union d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruise Missile
A cruise missile is an unmanned self-propelled guided missile that sustains flight through aerodynamic lift for most of its flight path. Cruise missiles are designed to deliver a large payload over long distances with high precision. Modern cruise missiles are capable of traveling at high Aerodynamics#Incompressible aerodynamics, subsonic, Supersonic speed, supersonic, or Hypersonic speed, hypersonic speeds, are self-navigating, and are able to fly on a non-Ballistics, ballistic, extremely low-altitude trajectory. History The idea of an "aerial torpedo" was shown in the British 1909 film ''The Airship Destroyer'' in which flying torpedoes controlled wirelessly are used to bring down airships bombing London. In 1916, the Americans, American Aircraft pilot, aviator Lawrence Sperry built and patented an "aerial torpedo", the Hewitt-Sperry Automatic Airplane, a small biplane carrying a TNT charge, a Sperry autopilot and barometric altitude control. Inspired by the experiments, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
38 North
''38 North'' is a website devoted to analysis about North Korea. Its name refers to the 38th parallel north which passes through the Korean peninsula and from 1945 until the start of the Korean War in 1950 divided the peninsula into North and South Korea. Formerly a program of the US-Korea Institute at Johns Hopkins University's Paul H. Nitze School of Advanced International Studies, it is now housed at the Stimson Center and is directed by Senior Fellow Jenny Town. Notable contributors include nuclear scientist Sigfried Hecker, former Associated Press Pyongyang Bureau Chief Jean H. Lee, cybersecurity expert James Andrew Lewis, and North Korea Tech founder Martyn Williams. Satellite imagery analysis ''38 North'' is an authoritative source of policy and technical analysis regarding North Korea's internal and external affairs. It aims to facilitate an informed public policy debate about peace and security on the Korean Peninsula and provide policymakers, practitioners and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate-range Ballistic Missile
An intermediate-range ballistic missile (IRBM) is a ballistic missile with a range (aeronautics), range between (), categorized between a medium-range ballistic missile (MRBM) and an intercontinental ballistic missile (ICBM). Classifying ballistic missiles by range is done mostly for convenience. In principle there is little difference between a high-performance IRBM and a low-performance ICBM, because decreasing payload mass can increase the range over the ICBM threshold. The range definition used here is used within the U.S. Missile Defense Agency. History The progenitor for the IRBM was the Aggregate (rocket family)#A4b/A9, A4b rocket, winged for increased range and based on the famous V-2 rocket, V-2, Vergeltung, or "Reprisal", officially called Aggregate series, A4, rocket designed by Wernher von Braun. The V-2 was widely used by Nazi Germany at the end of World War II to bomb English and Belgian cities. The A4b was the prototype for the upper stage of the Aggregate (rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hwasong-10
The Hwasong-10 () is a mobile intermediate-range ballistic missile developed by North Korea. Description Hwasong-10 is a missile that is based on R-27 Zyb submarine-launched ballistic missile, but is slightly longer. It used a hypergolic combination of unsymmetrical dimethylhydrazine (UDMH) as fuel and nitrogen tetroxide (NTO) as oxidizer, which is similar to the liquid-fueled 4D10 engine of R-27. These propellants are much more advanced than the kerosene compounds used in North Korea's Scud and Hwasong-7 (Nodong) missiles. Once the fuel/oxidizer combination are fed into the missile, it could maintain a 'ready to launch' condition for several days, or even weeks, like the R-27 SLBM, in moderate ambient temperatures. A fueled Hwasong-10 would not have the structural strength to be safely land-transported, so the missile would have to be fueled at the launch site. It was originally believed that the rocket motors of Hwasong-10 were the same as those within the second stage of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missile
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground or the sea to destroy aircraft or other missiles. It is one type of anti-aircraft warfare, anti-aircraft system; in modern armed forces, missiles have replaced most other forms of dedicated anti-aircraft weapons, with anti-aircraft guns pushed into specialized roles. The first attempt at SAM development took place during World War II, but no operational systems were introduced. Further development in the 1940s and 1950s led to operational systems being introduced by most major forces during the second half of the 1950s. Smaller systems, suitable for close-range work, evolved through the 1960s and 1970s, to modern systems that are man-portable. Shipborne systems followed the evolution of land-based models, starting with long-range weapons and steadily evolving toward smaller designs to provide a layered defence. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pongae-5
The Pongae-5 (; KN-06 under the United States's naming convention) is a North Korean surface-to-air missile system. The system was first shown publicly at the 65th anniversary of the Workers’ Party of Korea on 10 October 2010. History In March 2010, Kim Jong Il reportedly visited the Huichon Youth Electrical Complex where he examined Pongae-5 missiles. Design The Pongae-5 is a long-range SAM that bears resemblance to the Russian S-300 and Chinese FT-2000. Imagery of missile launch tubes shows they are larger in diameter, but shorter than the S-300's missiles. The missiles are mounted on locally produced, stretched 6X6 KamAZ 55111 (Taebaeksan 96) launcher trucks, with each holding three missile tubes. The Pongae-5 is reportedly capable of hitting targets up to away. The system is equipped with a ''Flap Lid'' type phased array radar. Development A test launch occurred in June 2011. Another test launch, attended by Kim Jong Un was reported on 2 April 2016. As of May 2017, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-ship Cruise Missile
An anti-ship missile (AShM or ASM) is a guided missile that is designed for use against ships and large boats. Most anti-ship missiles are of the sea-skimming variety, and many use a combination of inertial navigation system, inertial guidance and active radar homing. A large number of other anti-ship missiles use infrared homing to follow the heat that is emitted by a ship; it is also possible for anti-ship missiles to be guided by radio command all the way. Many anti-ship missiles can be launched from a variety of weapons systems including Surface combatant, surface warships (also referred to as ship-to-ship missiles), submarines, bombers, fighter planes, anti-submarine warfare, patrol planes, helicopters, shore battery, shore batteries, land vehicles, and, conceivably, even infantrymen firing shoulder-launched missiles. The term surface-to-surface missile (SSM) is used when appropriate. The longer-range anti-ship missiles are often called anti-ship cruise missiles. Several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hwasong-9
The Hwasong-9 () is a North Korean single-stage, liquid-fueled medium-range ballistic missile. Description The Hwasong-9 is an advanced version of Hwasong-6 with a longer, lighter and wider body to storing more propellants, The Hwasong-9's estimated length, diameter and mass are , and respectively. The missile's transporter erector launcher is a MAZ-543 truck with four axles. It also has a separable warhead that is separated after engine burnout for improving the trajectory stability and reducing radar signature. As an enlarged, extended-range version of Hwasong-6, it can exchange payload for greater range. The Hwasong-9 is capable of travelling with a reduced payload of and enlarging the propellant tanks. It is a single-stage, road mobile missile that can employ a high-explosive, submunition, chemical, or potentially miniaturized nuclear warhead with a CEP. Its range allows the North Korean military to strike anywhere on the Korean peninsula and threaten areas of Japan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hwasong-6
The Hwasong-6 () is a North Korean tactical ballistic missile. It is derived from the Hwasong-5, itself a derivative of the Soviet R-17 Elbrus. It carries the NATO reporting name Scud. History Work on an extended-range version of the Hwasong-5 began around 1984, and with only relatively minor modifications, a new type was produced from 1989, designated Hwasong-6 ("Scud Mod. C" or "Scud-C"). It was first tested in June 1990, and entered full-scale production the same year, or in 1991. It is likely out of production. The North Koreans would later use their acquired know-how to produce domestic copies of the Scud-B to create a larger missile, the Hwasong-7. To increase range over its predecessor, the Hwasong-6 has its payload decreased to and the length of the rocket body extended to increase the propellant by 25%; accuracy is circular error probability (CEP). Such range is sufficient to strike targets as far away as western Japan. Its dimensions are identical to the original Hw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medium-range Ballistic Missile
A medium-range ballistic missile (MRBM) is a type of ballistic missile with medium range (aeronautics), range, this last classification depending on the standards of certain organizations. Within the United States Department of Defense, U.S. Department of Defense, a medium-range missile is defined by having a maximum range of between . In modern terminology, MRBMs are part of the wider grouping of theatre ballistic missiles, which includes any ballistic missile with a range of less than . Roughly speaking, MRBM covers the ranges over SRBM (tactical) and under IRBM. Specific MRBMs * DF-2 – * DF-16 – * DF-17 – * DF-21 – * SSBS S1 * S2 (missile) * Agni-II – * Agni-P – * Long Range – Anti Ship Missile (India), Long Range – Anti Ship Missile > (Tested on 16 November 2024) * Ashoura (missile), Ashoura – * Emad (missile), Emad – * Fajr-3 (missile), Fajr-3 – (estimation) * Fattah (missile), Fattah – * Ghadr-110 – * Kheibar Shekan – 1400 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
