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W80 (nuclear warhead)
The W80 is a small thermonuclear warhead (fusion or, more descriptively, two-stage weapon) in the U.S. enduring stockpile with a variable yield of between 5 and 150 kt of TNT.
It was designed for deployment on cruise missiles and is the warhead used in the majority of nuclear-armed US Air Force ALCM and ACM missiles, and their US Navy counterpart, the BGM-109 Tomahawk. It is essentially a modification of the widely deployed B61 weapon, which forms the basis of most of the current US stockpile. The very similar W84 warhead was deployed on the BGM-109G Gryphon GLCM.
==Dimensions==
The W80 is physically quite small: the "physics package" itself is about the size of a conventional Mk.81 bomb, in diameter and long, and only slightly heavier at about .
Armorers have the ability to select the yield of the resulting explosion in-flight, a capability referred to as variable yield. The minimum yield, perhaps using just the boosted fission primary, is around 5 kilotons of TNT; the highest yield is equivalent to around 150 kt.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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