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The RDS-2 was a nuclear weapon created and tested by the Soviet Union as an upgraded version of the RDS-1. (See Soviet atomic bomb project.) It included new explosive lenses along with a new core design to decrease the probability of pre-detonation or 'fizzle'.[1] The RDS-2 was tested on September 24, 1951. In its test it produced a 38.3 kiloton yield. It was detonated from the top of a tower thirty meters high. The detonation was controlled by a bomber flying over the testing site instead of the detonation being controlled by a ground control center.


  1. Bukharin, Oleg; Kadyshev, Timur; Miasnikov, Eugene; Sutyagin, Igor; Tarasenko, Maxim; Zhelezov, Boris (2001). "Russian Strategic Nuclear Forces". In podvig. Cambridge Massachusetts: The MIT Press. 

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