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.
Design features
The Swan device had a yield of 15 kilotons, weighed , and had a (symmetrical) ovoidshape with a diameter of and a length of , a length to diameter ratio of 1.97. The above schematicillustrates what were probably its essential features. == References ==