Tsyklon
| Function | Medium carrier rocket |
|---|---|
| Manufacturer | Yuzhmash |
| Country of origin | Soviet Union |
| Size | |
| Height | 39.7 m (130.2 ft) |
| Diameter | 3 m (9.8 ft) |
| Mass | 182,000 kg (401,000 lb) |
| Stages | 2 |
| Capacity | |
| Payload to LEO | 3,000 kg (6,600 lb) |
| Launch history | |
| Status | Retired |
| Launch sites | Baikonur Cosmodrome, LC-90 |
| Total launches | 8 |
| Successes | 7 |
| Failures | 1 |
| First flight | 27 October 1967 |
| Last flight | 25 January 1969 |
| Notable payloads |
IS-A/IS-P RORSAT |
| First stage - 8S671 | |
| Engines | 1 RD-251 |
| Thrust | 2,640 kN (593,4090 lbf) |
| Specific impulse | 301 sec |
| Burn time | 120 s |
| Fuel | N2O4/UDMH |
| Second stage - 8S672 | |
| Engines | 1 RD-252 |
| Thrust | 940 kN (211,410 lbf) |
| Specific impulse | 317 s |
| Burn time | 160 s |
| Fuel | N2O4/UDMH |
The Tsyklon (Циклон, "Cyclone", also known as Tsiklon), GRAU index 11K67, was a Soviet-designed expendable launch system, primarily used to put Cosmos satellites into low Earth orbit. It is based on the R-36 intercontinental ballistic missile designed by Mikhail Yangel and made eight launches, with seven successes and one failure. All of its launches were conducted from LC-90 at the Baikonur Cosmodrome. It is sometimes designated Tsyklon-2A, not to be confused with the later Tsyklon-2 rocket. It was introduced in 1967 and was derived from the R-36 ICBM (NATO designation SS-9 Scarp). It was retired in 1969.
It made its maiden flight on 27 October 1967. The booster's design was kept secret and no images or film clips of the complete vehicle were released to the public until after the collapse of the Soviet Union in part because of being used exclusively for military payloads and also because it was derived from an actively serving missile system. After 1991, the plant where the R-36/Tsyklon were manufactured ended up in newly-independent Ukraine.
Tsyklon was designed by the Yuzhnoye Design Bureau and manufactured by Yuzhmash (both in Dnipropetrovsk, Ukraine). Control system was designed at NPO "Electropribor" (Kharkiv, Ukraine). The last flown derivative, the Tsyklon-3 was retired in January 2009, however another derivative, the Tsyklon-4, is still under development.
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