Tsyklon-2 |
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| Function | Carrier rocket |
|---|---|
| Manufacturer | Yuzhmash |
| Country of origin | Soviet Union (Ukraine) |
| Size | |
| Height | 39.7 m (130.2 ft) |
| Diameter | 3 m (9.8 ft) |
| Mass | 182,000 kg (401,000 lb) |
| Stages | 3 |
| Capacity | |
| Payload to LEO | 2,820 kg (6,210 lb) |
| Associated rockets | |
| Family | R-36, Tsyklon |
| Comparable | Delta II |
| Launch history | |
| Status | Retired |
| Launch sites | Baikonur Cosmodrome LC-90 |
| Total launches | 106 |
| Successes | 105 |
| Failures | 1 |
| Maiden flight | 6 August 1969 |
| Last flight | 24 June 2006 |
| Notable payloads | IS-A/IS-P RORSAT EORSAT |
| First Stage - 11S681 | |
| Engines | 1 RD-251 |
| Thrust | 2,640 kN (593,4090 lbf) |
| Specific impulse | 301 sec |
| Burn time | 120 seconds |
| Fuel | N2O4/UDMH |
| Second Stage - 11S682 | |
| Engines | 1 RD-252 |
| Thrust | 940 kN (211,410 lbf) |
| Specific impulse | 317 sec |
| Burn time | 160 seconds |
| Fuel | N2O4/UDMH |
| Third Stage | |
| Engines | 1 RD-861 |
| Thrust | 77.96 kN (17,526 lbf) |
| Specific impulse | 317 sec |
| Burn time | 112 seconds |
| Fuel | N2O4/UDMH |
The Tsyklon-2, also known as Tsiklon-2 and Tsyklon-M, GRAU index 11K69, was a Soviet, and subsequently Ukrainian orbital carrier rocket. A derivative of the R-36 ICBM, and a member of the Tsyklon family, it made its maiden flight on 6 August 1969, and after 106 launches, made its final flight on 24 June 2006. At the time of retirement, it was the most reliable active carrier rocket in the world, having failed only once. It is the second most reliable carrier rocket overall, behind the Atlas II. It was retired in favour of future modern and all-Russian carrier rockets, such as the Angara.
Due to the covert nature of its missions, it is hard to be certain that it has been retired, however it has been reported that the Tsyklon family of rockets is now retired (except for the Tsyklon-4, which is currently (2011) under development).
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