Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Universal Rocket or UR family of missiles and carrier rockets is a Russian, previously Soviet rocket family. Intended to allow the same technology to be used in all Soviet rockets, the UR is produced by the Khrunichev State Research and Production Space Centre. Several variants were originally planned, of which only three flew, and only two of which entered service. In addition, the cancelled UR-500 ICBM formed the basis for the Proton carrier rocket.The UR-100 and its variants were the standard small ICBM of the Soviet Union during the Cold War. The Strela and Rokot carrier rockets are based on it.The UR-200 was intended to be a larger ICBM, which could also be used as a carrier rocket. Nine test flights were made between 4 November 1963, and 20 October 1964, before the programme was cancelled in favor of Mikhail Yangel's R-36 missile and Tsyklon carrier rocket derivative.

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