Tsyklon-4

Tsyklon-4
FunctionCarrier rocket
Manufacturer
Country of originUkraine
Size
Height39.95 m (131.1 ft)
Diameter3.0 m (9.8 ft)
Mass198,250 kg (437,070 lb)
Stages3
Capacity
Payload to {{{to}}}
Associated rockets
FamilyR-36 / Tsyklon
ComparableZenit
Launch history
StatusCancelled
Launch sitesAlcântara ACS Pad
First stage – 11K69
Powered by1 × RD-261 + RD-855 Vernier engine
Maximum thrust2,970 kN (303 tf)
Specific impulse300.4 s (2.946 km/s)
Burn time119 seconds
PropellantN2O4 / UDMH
Second stage – 11S692
Powered by1 × RD-262 + RD-856 Vernier engine
Maximum thrust995 kN (101.5 tf)
Specific impulse314 s (3.08 km/s)
Burn time162 seconds
PropellantN2O4 / UDMH
Third stage
Powered by1 × RD-861K
Maximum thrust76 kN (7.8 tf)
Specific impulse325 s (3.19 km/s)
Burn time450 seconds
PropellantN2O4 / UDMH

The Tsyklon-4, also known as Tsiklon-4 and Cyclone-4, was a Ukrainian carrier rocket which was being developed for commercial satellite launches. Derived from the Tsyklon-3, it had a new third stage, a larger payload fairing, and a modernised flight control system compared to its predecessor.[1] The control system had been developed by JSC Khartron.[2][3]

  1. ^ "Cyclone-4 Launch Vehicle". NPO InterCoS.
  2. ^ "Control systems for intercontinental ballistic missiles and launch vehicles". Archived from the original on 2010-02-05. Retrieved 2010-06-14.
  3. ^ Krivonosov, Khartron: Computers for rocket guidance systems