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Nuclear Missile
Nuclear weapons delivery is the technology and systems used to place a nuclear weapon at the position of detonation, on or near its target. All nine nuclear states have developed some form of medium- to long-range delivery system for their nuclear weapons. Alongside improvement of weapons, their development and deployment played a key role in the nuclear arms race. Strategic nuclear weapons are intended primarily as part of a doctrine of deterrence by threatening large targets, such as cities or military installations. These are generally delivered by some combination of land-based intercontinental ballistic missiles, sea-based submarine-launched ballistic missiles, and air-based strategic bombers carrying gravity bombs or cruise missiles. The possession of all three is known as a nuclear triad. Tactical nuclear weapons are intended for battlefield usage and/or destroying specific military, communications, or infrastructure targets, and generally have lower yields. Del ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Demolition Munition
Atomic demolition munitions (ADMs), colloquially known as nuclear land mines, are small nuclear explosive devices. ADMs were developed for both military and civilian purposes. As weapons, they were designed to be exploded in the forward battle area, in order to block or channel enemy forces. Non-militarily, they were designed for demolition, mining or earthmoving. Apart from testing, however, they have never been used for either purpose. Military uses Instead of being delivered to the target by missiles, rockets, or artillery shells, ADMs were intended to be emplaced by soldiers. Due to their relatively small size and light weight, ADMs could be emplaced by military engineers or special forces teams, then detonated on command or by timer to create massive obstructions. By destroying key terrain features or choke points such as bridges, dams, mountain passes and tunnels, ADMs could serve to create physical as well as radiological warfare, radiological obstacles to the movement of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maneuverable Reentry Vehicle
The maneuverable reentry vehicle (abbreviated MARV or MaRV) is a type of warhead for ballistic missile, ballistic missiles that is capable of maneuvering and changing its trajectory. There are two general reasons to use MARV. One is to make it more difficult to track the Atmospheric entry, re-entry vehicle (RV) and thereby make it more difficult to attack as it approaches its target. This was particularly useful against early anti-ballistic missile (ABM) systems which took seconds to calculate an interception course. Making random trajectory changes could render these systems useless. This class of MARV is sometimes known as evading MaRVs. The other is to improve accuracy or track moving targets using terminal guidance systems that can act only during the last stages of the flight. This class is sometimes known as accuracy MaRVs. In this case, it is the short range of the active guidance system that demands the RV be able to maneuver, as is the base in the Pershing II active rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple Independently Targetable Reentry Vehicle
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. An intermediate case is the multiple reentry vehicle (MRV) missile which carries several warheads which are dispersed but not individually aimed. All nuclear-weapon states except Pakistan and North Korea are currently confirmed to have deployed MIRV missile systems. 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 smaller W62 warheads, with yields of about each in place of the single W56 used on the Minuteman II. From 1970 to 1975, the United States would remove approximately 550 earlier versions of the Minuteman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missile Defense
Missile defense is a system, weapon, or technology involved in the detection, tracking, interception, and also the destruction of attacking missiles. Conceived as a defense against nuclear weapon, nuclear-armed intercontinental ballistic missiles (ICBMs), its application has broadened to include shorter-ranged non-nuclear Tactical ballistic missile, tactical and Theater ballistic missile, theater missiles. missile defense systems by country#China, China, France, missile defense systems by country#India, India, Iran, missile defense systems by country#Israel, Israel, Italy, missile defense systems by country#Russia, Russia, missile defense systems by country#Taiwan, Taiwan, the United Kingdom and the missile defense systems by country#United States, United States have all developed such air defense systems. Missile defense categories Missile defense can be divided into categories based on various characteristics: type/range of missile intercepted, the trajectory phase wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Defense
Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface (Submarine#Armament, submarine-launched), and air-based weapon systems, in addition to associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, army, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defense. Missile defense, Missile defense is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. Most modern anti-aircraft (AA) weapons systems are optimized for short-, medium-, or long-range air defence, although some systems may incorporate multiple weapons (such as both autocannons and surface-to-air missiles). 'Layered air defence' usually refers to multiple 't ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-ballistic Missile
An anti-ballistic missile (ABM) is a surface-to-air missile designed to Missile defense, destroy in-flight ballistic missiles. They achieve this explosively (chemical or nuclear), or via hit-to-kill Kinetic projectile, kinetic vehicles, which may also have self-maneuvering. Tactical systems are widely deployed to counter Short-range ballistic missile, short and Intermediate-range ballistic missile, intermediate-range ballistic missiles that carry conventional weapon, conventional warheads. Strategic systems, deployed by the United States, Russia, and Israel, are capable of intercepting intercontinental ballistic missiles, typically used to carry Strategic nuclear weapon, strategic nuclear warheads. During the Cold War, the 1972 ABM Treaty limited the nuclear arms race; excessive ICBM production would have been favoured to overwhelm ABM systems. Of the modern strategic ABM systems, only Russia's are themselves armed with nuclear warheads. Current counter-ICBM systems There are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Warning Satellite
An early warning satellite is an artificial satellite that detects ballistic missile launches in order to provide rapid early warning of a potential missile attack. Modern examples are often multi-purpose vehicles also supporting other wide-area reconnaissance roles. Early warning satellites normally use infrared sensors that detect the heat of the rocket engines on the missiles. These engines produce enormous amounts of heat that can be easily detected at very long range, through clouds or smoke. Looking down from above, the system provides warning as soon as the missile clears the silo, compared to radar systems which may have difficulty spotting the relatively small targets against the ground. Additionally, the IR detectors are entirely passive, making them more difficult to jam. Among the major EWS systems are the United States' Defense Support Program, Russia's (originally launched while still the USSR Oko fleet, and the China, Chinese Tongxin Jishu Shiyan. The European Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Live Fire Exercise
A live fire exercise (LFX) is a military exercise in which live ammunition and ordnance is used, as opposed to blanks or dummies. The term can also be found in non-military usage. Military Militaries usually use live-fire exercises as an opportunity to use real ammunition in a realistically created combat situation. The area in which these tests are conducted will be devoid of people to avoid casualties, and will likely be owned by the government that authorized the test. Most live-fire tests are conducted either against derelict equipment (such as tanks and ships) or against remotely controlled drones. The purpose of this type of exercise is twofold: First, it offers recruits the chance to get accustomed to their weapons so that they will know how to properly operate them. Secondly, this provides soldiers with an opportunity to fire live ammunition without having to worry about an actual enemy returning fire. This allows soldiers to get reacquainted with the feel and time o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Weapons Testing
Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of Nuclear explosion, their explosion. Nuclear testing is a sensitive political issue. Governments have often performed tests to signal strength. Because of their destruction and fallout, testing has seen opposition by civilians as well as governments, with international bans having been agreed on. Thousands of tests have been performed, with most in the second half of the 20th century. The first nuclear device was detonated as a test by the United States at the Trinity site in New Mexico on July 16, 1945, with a yield approximately TNT equivalent, equivalent to 20 kilotons of TNT. The first thermonuclear weapon technology test of an engineered device, codenamed Ivy Mike, was tested at the Enewetak Atoll in the Marshall Islands on November 1, 1952 (local date), also by the United States. The largest nuclear weapon ever tested was the Tsar Bomba of the Soviet Union at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nuclear Weapons Tests
Nuclear weapons testing is the act of experimentally and deliberately firing one or more nuclear devices in a controlled manner pursuant to a military, scientific or technological goal. This has been done on test sites on land or waters owned, controlled or leased from the owners by one of the eight nuclear nations: the United States, the Soviet Union, the United Kingdom, France, China, India, Pakistan and North Korea, or has been done on or over ocean sites far from territorial waters. There have been 2,121 tests done since the first in July 1945, involving 2,476 nuclear devices. As of 1993, worldwide, 520 atmospheric nuclear explosions (including eight underwater) have been conducted with a total yield of 545 megatons (Mt): 217 Mt from pure fission and 328 Mt from bombs using fusion, while the estimated number of underground nuclear tests conducted in the period from 1957 to 1992 is 1,352 explosions with a total yield of 90 Mt. As a result of the 1996 Comprehe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
