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The bomb was hailed as a hydrogen bomb, and the truth that it was actually a large fission bomb was kept secret by the British government until the end of the Cold War. [135] [136] An Operational Requirement (OR1142) had been issued in 1955 for a thermonuclear warhead for a medium-range ballistic missile, which became Blue Streak. This was ...
Production of British nuclear weapons was slow and Britain had only ten atomic bombs on hand in 1955 and just fourteen in 1956. [171] At the three-power Bermuda Conference with Eisenhower in December 1953, Churchill suggested that the United States allow Britain to have access to American nuclear weapons to make up the shortfall. [172]
The components of a B83 nuclear bomb used by the United States. This is a list of nuclear weapons listed according to country of origin, and then by type within the states. . The United States, Russia, China and India are known to possess a nuclear triad, being capable to deliver nuclear weapons by land, sea and
This U.S. design was the heavy but highly efficient (i.e., nuclear weapon yield per unit bomb weight) 25 Mt (100 PJ) B41 nuclear bomb. [22] The Soviet Union is thought to have used multiple stages (including more than one tertiary fusion stage) in their 50 Mt (210 PJ) (100 Mt (420 PJ) in intended use) Tsar Bomba.
April: 1957 Defence White Paper emphasises nuclear weapons to replace Britain's declining conventional military capabilities. [53] May: First British hydrogen bomb test in Operation Grapple off Malden Island in the Pacific is a failure. [64] May: Memorandum of Understanding with the US regarding the loan of nuclear weapons to the UK in wartime ...
Red Snow was a British thermonuclear weapon, [1] based on the US W28 (then called Mark 28) design used in the B28 thermonuclear bomb and AGM-28 Hound Dog missile. [2] The US W28 had yields of 70, 350, 1,100 and 1,450 kilotonnes of TNT (0.29, 1.46, 4.60 and 6.07 PJ) [3] and while Red Snow yields are still classified, declassified British documents indicate the existence of "kiloton Red Snow ...
British nuclear weapons are designed and developed by the UK's Atomic Weapons Establishment. The United Kingdom has four Vanguard -class submarines armed with nuclear armed Trident missiles . The principle of operation is based on maintaining deterrent effect by always having at least one submarine at sea, and was designed during the Cold War ...
Orange Herald was a fusion boosted British fission nuclear weapon (called a core-boosted device by the British), comprising a U-235 core containing a small amount of lithium deuteride . [1] [2] 'Herald' was suitable for mounting on a missile, utilizing 117 kg of U-235. However, Britain's annual production of U-235 was only 120 kg at this time ...