Tsyklon-4
| Function | Carrier rocket |
|---|---|
| Manufacturer | <templatestyles src="Plainlist/styles.css"/> |
| Country of origin | Ukraine |
| Size | |
| Stages | 3 |
| Associated rockets | |
| Family | R-36, Tsyklon |
| Comparable | Zenit |
| Launch history | |
| Status | Cancelled |
| Launch sites | Alcântara Baikonur Site 90 Plesetsk Site 32 |
| First stage - 11K69 | |
| Engines | 1 RD-261 + RD-855 Vernier engine |
| Thrust | 3,032 kilonewtons (682,000 lbf) |
| Specific impulse | 298.21 sec |
| Burn time | 119 seconds |
| Fuel | N2O4 / UDMH |
| Second stage - 11S692 | |
| Engines | 1 RD-262 + RD-856 Vernier engine |
| Thrust | 941 kilonewtons (212,000 lbf) |
| Specific impulse | 313.5 sec |
| Burn time | 162 seconds |
| Fuel | N2O4 / UDMH |
| Third stage | |
| Engines | RD-861К |
| Thrust | 7,91 ts |
| Specific impulse | 330 sec |
| Burn time | 450 sec |
| Fuel | N2O4 / UDMH |
The Tsyklon-4[1] or Cyclone-4, also known as Tsiklon-4, is a Ukrainian carrier rocket which is being developed for commercial satellite launches. Derived from the Tsyklon-3, it has a new third stage, a larger payload fairing, and a modernised flight control system compared to its predecessor.[2] Control system has been developed by JSC Khartron.[3][4]
Contents
Specifications
Tsyklon-4 is a three-stage-to-orbit expendable launch system built on the successful Tsyklon-3 rocket and it uses its first two stages. The new features are mostly concentrated in the newly developed third stage:
- The third stage has a three times larger propellant capacity;
- The new rocket engine RD-861K with multiple ignition capability (3 to 5 times);
- A modern western-like control system capable of precise orbit injections;
- A new fairing derived from Ariane 4 is under development. It has a diameter of 4 meters, controlled temperature and cleanness conditions inside.
Tsyklon-4 will also improve the fueling system, allowing safe capture of toxic vapors from the Tsyklon's hypergolic propellant.
The new system, operated from a near-equatorial launch facility, will be able to deliver 5,300 kg into low Earth orbit, or up to 1,600 kg into a geostationary transfer orbit.[5]
Launch facilities
Tsyklon-4 will be launched primarily from the Baikonur and Plesetsk Cosmodromes. A preliminary attempt to develop a Ukrainian-Brazilian rocket launching center ended up in a big fiasco. Due to severe financial problems in the South American developing country and to strong political pressures from Russia, the project was cancelled in 2015.[citation needed]
Development history
Lua error in package.lua at line 80: module 'strict' not found. Development began in 2002, with the maiden flight aimed for 2006. Following a series of production delays, this has slipped, and is now scheduled for sometime after 2015.
The planned payload capacity of the Tsyklon-4 is 5,500 kilograms (12,100 lb) to a 500 kilometre circular low Earth orbit, or 1,700 kilograms (3,700 lb) to geosynchronous transfer orbit.[6]
The project was terminated by the Brazilian government in 2015.[7]
See also
References
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Control systems for intercontinental ballistic missiles and launch vehicles
- ↑ Krivonosov, Khartron: Computers for rocket guidance systems
- ↑ http://www.alcantaracyclonespace.com/phocadownload/cyclone4_users_guide.pdf
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
