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Mark 8 Nuclear Bomb
The Mark 8 nuclear bomb was an American nuclear bomb, designed in the late 1940s and early 1950s, which was in service from 1952 to 1957. Description The Mark 8 was a gun-type nuclear bomb, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" over and around a fissile "target", using a system which closely resembles a medium-sized cannon barrel and propellant. The Mark 8 was an early earth-penetrating bomb (see nuclear bunker buster), intended to dig into the earth some distance prior to detonating. According to one government source, the Mark 8 could penetrate of reinforced concrete, of hard sand, of clay, or of hardened armor-plate steel. by Carson Mark, Raym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mk 8 Nuclear Bomb
MK or mk may refer to: In arts, entertainment and media Fictional characters * Moon Knight, a Marvel Comics superhero * M.K., an '' ''Into the Badlands'' (TV series) character * Mary Katherine "M.K." Bomba, the protagonist in ''Epic'' (2013 film) Video games * '' Makai Kingdom: Chronicles of the Sacred Tome'', a tactical role-playing game * '' Mario Kart'', a series of racing video games developed and published by Nintendo featuring characters from the ''Mario'' franchise * '' Mortal Kombat'', a series of fighting video games developed and published by Midway Games, and later Warner Bros Other media * MK (channel), a defunct, South African, Afrikaans-language music television channel * Moskovskij Komsomolets, a Russian newspaper In business and finance * Markup (business), a term for the difference between the cost of a good or service and its selling price * Mark (designation), a designation used to identify versions of a product or item, e.g. Mk. II * Finnish markka (sym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 11 Nuclear Bomb
The Mark 11 nuclear bomb was an American nuclear bomb developed from the earlier Mark 8 nuclear bomb in the mid-1950s. Like the Mark 8, the Mark 11 was an earth-penetrating weapon, also known as a nuclear bunker buster bomb. Description As with the Mark 8, the Mark 11 was a gun-type nuclear bomb (see also: gun-type assembly weapon). It used a fixed large target assembly of highly enriched uranium or HEU, a gun-like barrel, and a powder charge and uranium bullet or projectile fired up the barrel into the target. The Mark 11 was first produced in 1956, and was in service until 1960. A total of 40 were produced, replacing but not expanding the quantity of Mark 8 bombs. It was in diameter and long, with a weight of . Yield was reportedly the same as the Mark 8, 25 to 30 kilotons. The two bombs reportedly used the same basic fissile weapon design, but the Mark 11 had a much more modern external casing designed to penetrate further and more reliably into the ground. The M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold War Aerial Bombs Of The United States
Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00K on the Kelvin scale, an absolute thermodynamic temperature scale. This corresponds to on the Celsius scale, on the Fahrenheit scale, and on the Rankine scale. Since temperature relates to the thermal energy held by an object or a sample of matter, which is the kinetic energy of the random motion of the particle constituents of matter, an object will have less thermal energy when it is colder and more when it is hotter. If it were possible to cool a system to absolute zero, all motion of the particles in a sample of matter would cease and they would be at complete rest in the classical sense. The object could be described as having zero thermal energy. Microscopically in the description of quantum mechanics, however, matter still has zero-point energy even at absolute zero, because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Boy
"Little Boy" was the type of atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II, making it the first nuclear weapon used in warfare. The bomb was dropped by the Boeing B-29 Superfortress ''Enola Gay'' piloted by Colonel Paul W. Tibbets, Jr., commander of the 509th Composite Group of the United States Army Air Forces and Captain Robert A. Lewis. It exploded with an energy of approximately and caused widespread death and destruction throughout the city. The Hiroshima bombing was the second man-made nuclear explosion in history, after the Trinity nuclear test. Little Boy was developed by Lieutenant Commander Francis Birch (geophysicist), Francis Birch's group at the Manhattan Project's Los Alamos Laboratory during World War II, a reworking of their unsuccessful Thin Man (nuclear bomb), Thin Man nuclear bomb. Like Thin Man, it was a gun-type fission weapon, but it derived its explosive power from the nuclear fission of uranium-235, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nuclear Weapons
This is a list of nuclear weapons listed according to country of origin, and then by type within the states. United States US nuclear weapons of all types – bombs, warheads, shells, and others – are numbered in the same sequence starting with the Mark 1 and () ending with the W-91 (which was canceled prior to introduction into service). All designs which were formally intended to be weapons at some point received a number designation. Pure test units which were experiments (and not intended to be weapons) are not numbered in this sequence. Early weapons were very large and could only be used as free fall bombs. These were known by "Mark" designators, like the Mark 4 which was a development of the Fat Man weapon. As weapons became more sophisticated they also became much smaller and lighter, allowing them to be used in many roles. At this time the weapons began to receive designations based on their role; bombs were given the prefix "B", while the same warhead used in other r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 12 Nuclear Bomb
The Mark-12 nuclear bomb was a lightweight nuclear bomb designed and manufactured by the United States which was built starting in 1954 and which saw service from then until 1962. The Mark-12 was notable for being significantly smaller in both size and weight compared to prior implosion-type nuclear weapons. For example, the overall diameter was only , compared to the immediately prior Mark-7 which had a diameter, and the volume of the implosion assembly was only 40% the size of the Mark-7's. There was a planned W-12 warhead variant which would have been used with the RIM-8 Talos missile, but it was cancelled prior to introduction into service. Specifications The complete Mark-12 bomb was in diameter, long, and weighed . It had a yield of . Features The Mark-12 has been speculated to have been the first deployed nuclear weapon to have used beryllium as a reflector-tamper inside the implosion assembly (see nuclear weapon design Nuclear weapon designs are physical, chemic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 10 Nuclear Bomb
The Mark 10 nuclear bomb was a proposed American nuclear bomb based on the earlier Mark 8 nuclear bomb design. The Mark 10, like the Mark 8, is a Gun-type nuclear weapon, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" over a fissile "target", using a system which closely resembles a medium-sized cannon barrel and propellant. The Mark 10 was intended to be a general purpose airburst nuclear weapon, unlike the Mark 8 which was intended to penetrate into the ground as a Nuclear bunker buster. It was nicknamed the "Airburst Elsie"; the Mark 8 had been nicknamed the LC or Light Casing bomb, which was then expanded to "Elsie." The bomb was in diameter and weighed . It had a design yield of 12 to 15 kilotons. The Mark 10 design was cancelled in 1952, replaced by the implosion-type Mark 12 which was lighter and used considerably less fissile material. See also * List of nuclear weapons * Mark 1 Little Boy nuclear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SSM-N-8 Regulus
The SSM-N-8A Regulus or the Regulus I was a United States Navy-developed ship-and-submarine-launched, nuclear-capable turbojet-powered second generation cruise missile, deployed from 1955 to 1964. Its development was an outgrowth of U.S. Navy tests conducted with the German V-1 missile at Naval Air Station Point Mugu in California. Its barrel-shaped fuselage resembled that of numerous fighter aircraft designs of the era, but without a cockpit. Test articles of the Regulus were equipped with landing gear and could take off and land like an airplane.''Regulus: The First Nuclear Missile Submarines'' documentary, Spark, 2002 When the missiles were deployed they were launched from a rail launcher, and equipped with a pair of Aerojet JATO bottles on the aft end of the fuselage. History Design and development In October 1943, Chance Vought Aircraft Company signed a study contract for a range missile to carry a warhead. The project stalled for four years, however, until May 1947 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiloton
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. The is a unit of energy defined by that convention to be , which is the approximate energy released in the detonation of a tonne, metric ton (1,000 kilograms) of Trinitrotoluene, TNT. In other words, for each gram of TNT exploded, (or 4184 joules) of energy is released. This convention intends to compare the destructiveness of an event with that of conventional explosive materials, of which TNT is a typical example, although other conventional explosives such as dynamite contain more energy. Kiloton and megaton The "kiloton (of TNT)" is a unit of energy equal to 4.184 tera-, terajoules (). The "megaton (of TNT)" is a unit of energy equal to 4.184 peta-, petajoules (). The kiloton and megaton of TNT have traditionally been used to describe the energy output, and hence the destructive power, of a nuclear weapon. The TNT equivalent appears in various CTBT, n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Alamos Science
''Los Alamos Science'' was the Los Alamos National Laboratory's flagship publication in the years 1980 to 2005. Its main purpose was to present the laboratory's research and its significance to national security to the scientific community, and US government policymakers. Special issues appeared on subjects such as particle physics, Stanislaw Ulam, and the Human Genome Project The Human Genome Project (HGP) was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying, mapping and sequencing all of the genes of the human genome from both a .... "Pedagogical articles" were intended to explain difficult concepts in one field to scientists and students in other fields. References Science and technology magazines published in the United States Magazines established in 1980 Magazines disestablished in 2005 Defunct magazines published in the United States Biannual magazines published in the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
