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| Function | Carrier rocket |
|---|---|
| Manufacturer | OKB-1 |
| Country of origin | Soviet Union |
| Size | |
| Height | 50 metres (160 ft) |
| Diameter | 10.3 metres (34 ft) |
| Mass | 300,000 kilograms (660,000 lb) |
| Stages | Two |
| Capacity | |
| Payload toLEO | |
| Mass | 6,600 kilograms (14,600 lb) |
| Associated rockets | |
| Family | R-7 (Soyuz) |
| Launch history | |
| Status | Retired |
| Launch sites | Plesetsk Sites41/1 &43/4 |
| Total launches | 8[1] |
| Success(es) | 8 |
| First flight | 27 December 1971 |
| Last flight | 31 March 1976 |
| Carries passengers or cargo | Zenit-4MT |
TheSoyuz-M (Russian:Союз, meaning"Union"),GRAU index11A511M was aSovietexpendablecarrier rocket designed byOKB-1 and manufactured byState Aviation Plant No. 1 inSamara, Russia. It was originally built to launch crewedSoyuz 7K-VI spacecraft for the Soviet armed forces. Following the cancellation of this programme, development of the rocket continued for theSoyuz 7K-S spacecraft. After this too was cancelled, Soyuz-M development was also abandoned, and the rockets that had been completed were used to launchreconnaissance satellites.
While the exact details of the Soyuz-M are not known, it is believed to be a two-stage rocket, derived from theSoyuz. It may have been similar to the laterSoyuz-U.[2] Following the cancellation of the Soyuz 7K-S, eight were launched withZenit-4MT spacecraft.[2] The first of these launches occurred on 27 December 1971, and the last on 31 March 1976. All launches occurred from thePlesetsk Cosmodrome, six frompad 41/1 and two frompad 43/4.[1]
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