Knowledge (XXG)

W62

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161: 287:, and in March, there were further investigations into even lighter warheads than the baseline Mark 12 light design. The initial secondary stage in the warhead was of the "conventional design", but in July the design was changed to allow for more forward placing of the warhead, reducing total weight. The first test of the secondary was in September. In November, the system specifications were changed to support development of an MIRV system. 38: 323:
warhead on Minuteman III's predecessor had a yield of 1.2 megatonnes of TNT (5.0 PJ), while its successor, the W78, has a yield of 330 to 350 kilotonnes of TNT (1,400 to 1,500 TJ). The weapon had contact and airburst fuzing modes. Development of the warhead required "numerous" nuclear tests
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In January 1963, development of a MRV system for Minuteman was authorized. At this time, the navy asked to become an observer for the program. In April 1963, the system feasibility study was released. Three warhead designs of varying hardness, yield and weight were proposed for the light warhead, and
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21 April 1965. These led to changes in the primary stage design in March 1965. In 1966, significant effort was devoted towards hardening the warhead systems against weapon effects to prevent x-ray pin-down. In the same year, the warhead was delayed due to RV ablation causing some RVs to break up on
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The exact dimensions of the W62 are classified, but it fits within the Mark 12 reentry vehicle which is 22 in (56 cm) in diameter and 72 in (1.8 m) long. The weight of the W62 has been described as both 253 lb (115 kg) and 700 to 800 lb (320 to 360 kg),
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X-ray pin-down is where warheads are detonated high above an ICBM silo field, in the missile's flyout corridor, to destroy ascending ICBMs. When detonated exoatmospherically, the primary effects from the detonations are x-rays which cause lethal damage to the ascending ICBMs in a very wide
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however a declassified document circa 1963 states that the combined weight of the warheads in the three warhead configuration for Minuteman would be approximately 750 lb (340 kg) or 250 lb (110 kg) per warhead.
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that allowed for the deployment of multiple satellites from a single rocket into multiple orbits. Transtage was a highly maneuverable post-boost control system developed without any specific mission in mind, but was used for the
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In October 1967, navy cooperation on the Mark 12 was terminated, as the need to make the warhead compatible with both air force and navy requirements ultimately lead to a weapon that was less suitable for either application.
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missiles. The immediate effect was for the air force and navy to adopt common vulnerability requirement for the warhead, which was complicated by the navy having more stringent vulnerability requirements than the air force.
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The first production W62 was produced in April 1970. The warhead was partially replaced by the W78 starting in December 1979 and fully replaced by the W87 warhead in 2010, thereafter it was retired and dismantled.
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In October 1963, the director for defense research requested that the air force and navy cooperate on the Mark 12 program so that the warhead could be used interchangeably on both the Minuteman and
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Two or three warheads were carried on Minuteman III, depending on the desired maximum range. Proposals to put the W62 on Titan II were to use two
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A series of changes were made to the weapon requirements in regards to hardening in 1964 and 1965. This included a second weapon effects test,
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Airmen work on the W62 warheads of an LGM-30G Minuteman III’s Multiple Independently-targetable Re-entry Vehicle (MIRV) system.
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between 1963 and 1968. Some of these tests were to develop the primary and for one-point safety testing of the system.
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defense communication satellite system. Further developments included the miniaturization of thermonuclear weapons.
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A total of 1,725 W62 warheads were produced during its production run. The last W62 was dismantled in August 2010.
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The concept of the W62 began in 1961 with an air force study into reentry vehicles for "multiple mode", what
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concept, consisting of two different reentry vehicles: a "light" and "heavy", both called the Mark 12.
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The yield of the W62 is publicly believed to be 170 kilotonnes of TNT (710 TJ). The
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designed in the 1960s and manufactured from March 1970 to June 1976. Used on some
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defenses. One of the earliest effects tests of this new RV was shot
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Drawing of the Mark 12 re-entry vehicle that houses the W62 warhead.
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles
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in 1962. In August 1962 the Mark 12 RV developed into the
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American thermonuclear warhead designed in the late 1960s
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and Trantstage systems. Able-Star was a system for the
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(December 1984). 180:ICBMs, it was partially replaced by the 159: 375: 355: 88:Lawrence Livermore National Laboratory 1830:Nuclear warheads of the United States 802:DCI Briefing to Joint Chiefs of Staff 416: 414: 412: 410: 383: 381: 379: 253:multiple independent reentry vehicles 7: 782:from the original on 27 January 2022 388:Sublette, Carey (1 September 2001). 1305:Tactical Atomic Demolition Munition 154:170 kilotonnes of TNT (710 TJ) 1299:Special Atomic Demolition Munition 807:(Report). 1963-07-30. p. 20. 776:United States Department of Energy 447:Daniel Ruchonnet (February 1976). 421:Sublette, Carey (9 January 2007). 14: 1293:Medium Atomic Demolition Munition 770:Schueler, John (12 August 2010). 832:Sublette, Carey (12 June 2020). 36: 814:from the original on 2021-11-06 701:from the original on 2022-06-29 461:from the original on 2022-07-02 872:Swords of Armageddon Volume VI 192:missiles and retired in 2010. 110: 1: 946:United States nuclear devices 1657:Reliable Replacement Warhead 248:two for the heavy warhead. 19:For the train station, see 1851: 669:Steinbruner, John (1984). 283:warhead, which became the 18: 646:Ballistic Missile Defense 202:Multiple Reentry Vehicles 133: 35: 129:253 pounds (115 kg) 394:Nuclear Weapons Archive 344:List of nuclear weapons 105:March 1970 to June 1976 870:Hansen, Check (2007). 838:Nuclear Weapon Archive 427:Nuclear Weapon Archive 230:anti-ballistic missile 188:warheads removed from 165: 671:"Launch under Attack" 174:thermonuclear warhead 163: 208:RV for Minuteman, a 675:Scientific American 296:Operation Whetstone 481:, p. 41, 110. 390:"The W-78 Warhead" 166: 79:Production history 1817: 1816: 1746: 1745: 1671: 1670: 1314: 1313: 1268:Atomic demolition 881:978-0-9791915-6-5 556:, p. 51, 62. 423:"The W62 Warhead" 158: 157: 146:Contact, airburst 1842: 1684: 1325: 963: 939: 932: 925: 916: 898: 892: 886: 885: 867: 861: 855: 849: 848: 846: 844: 829: 823: 822: 820: 819: 813: 806: 798: 792: 791: 789: 787: 767: 758: 752: 746: 740: 734: 728: 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Index

Osashima Station

Nuclear warhead
Lawrence Livermore National Laboratory

thermonuclear warhead
Minuteman III
W78
W87
MX Peacekeeper
Multiple Reentry Vehicles
Titan II
Titan I
Atlas
anti-ballistic missile
Operation Nougat
multiple independent reentry vehicles
Able-Star
Thor rocket
IDCSP
Polaris
W67 warhead
Operation Whetstone
W56
warhead buses
List of nuclear weapons



"The W-78 Warhead"

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