Soyuz-M
Encyclopedia
The Soyuz-M GRAU index 11A511M was a Soviet
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 expendable
Expendable launch system
An expendable launch system is a launch system that uses an expendable launch vehicle to carry a payload into space. The vehicles used in expendable launch systems are designed to be used only once , and their components are not recovered for re-use after launch...

 carrier rocket designed by OKB-1 and manufactured by State Aviation Plant No. 1 in Samara, Russia
Samara, Russia
Samara , is the sixth largest city in Russia. It is situated in the southeastern part of European Russia at the confluence of the Volga and Samara Rivers. Samara is the administrative center of Samara Oblast. Population: . The metropolitan area of Samara-Tolyatti-Syzran within Samara Oblast...

. It was originally built to launch manned Soyuz 7K-VI spacecraft for the Soviet armed forces. Following the cancellation of this programme, development of the rocket continued for the Soyuz 7K-S spacecraft. After this too was cancelled, Soyuz-M development was also abandoned, and the rockets that had been completed were used to launch reconnaissance satellites.

While the exact details of the Soyuz-M are not known, it is believed to be a two stage rocket, derived from the Soyuz
Soyuz (rocket)
The Soyuz was a Soviet expendable carrier rocket designed by OKB-1 and manufactured by State Aviation Plant No. 1 in Samara, Russia. It was used to launch Soyuz spacecraft as part of the Soyuz programme, initially on unmanned test flights, followed by the first 19 manned launches of the...

. It may have been similar to the later Soyuz-U
Soyuz-U
The Soyuz-U launch vehicle is an improved version of the original Soyuz LV. Soyuz-U is part of the R-7 family of rockets based on the R-7 Semyorka missile. Members of this rocket family were designed by the TsSKB design bureau and constructed at the Progress Factory in Samara, Russia....

. Following the cancellation of the Soyuz 7K-S, eight were launched with Zenit-4MT spacecraft. The first of these launches occurred on 27 December 1971, and the last on 31 March 1976. All launches occurred from the Plesetsk Cosmodrome
Plesetsk Cosmodrome
Plesetsk Cosmodrome is a Russian spaceport, located in Arkhangelsk Oblast, about 800 km north of Moscow and approximately 200 km south of Arkhangelsk.-Overview:...

, the first used Site 43/4
Plesetsk Cosmodrome Site 43
Site 43, also known as SK-3 and SK-4, is a launch complex at the Plesetsk Cosmodrome in Russia. It consists of a two pads, Sites 43/3 and 43/4, and has been used by R-7 derived rockets since the early 1960s....

, however the sites used by the subsequent launches were not recorded.
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