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Swan (nuclear primary)

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Swan (nuclear primary)

Swan was a United States test nuclear explosive, which was developed into the XW-45 warhead. The Swan device is the first design to incorporate a two-point ignition hollow-pit air-lens implosion assembly together with fusion boosting.

It was tested standalone on June 22, 1956, in shot Redwing Inca. It was tested again as the primary of a thermonuclear device on July 2, 1956, in shot Redwing Mohawk. Both tests were successful.

The Swan device had a yield of 15 kilotons, weighed 105 pounds (48 kg), and had a (symmetrical) ovoid[verification needed]shape with a diameter of 11.6 inches (29 cm) and a length of 22.8 inches (58 cm), a length to diameter ratio of 1.97.

The above schematic[citation needed]illustrates what were probably its essential features.

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