Carrier Rockets of the World: Tsyklon (Russia/CIS),
NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
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The Tsyklon was developed in the mid-1960s based on the SS-9 Scarp ICBM. It belongs to the Sheldon systems F family of medium-sized carrier rockets. Of these, the F-1-r SL-10 Tsyklon 1 has been retired, and the F-1-m SL-11 Tsyklon 2 and F-2 SL-14 Tsyklon 3 are still in service. The load capacity of the Tsyklon carrier rocket is greater than that of the Cosmos but less than that of the Soyuz rocket, and thus it fills the gap in load capacity between these two and makes the former Soviet Unions carrier rocket series more complete. The Tsyklon carrier rocket was developed by the Yangel design bureau now Ukraines NPO Yuzhnoye. The SL-10 was a two-stage liquid propellant carrier rocket, and was originally a component of the former Soviet Unions outer space weapons program, the Fractional Orbit Bombardment System FOBS. The r in its Sheldon code name stands for its retro-rocket stage. This carrier rocket was launched for the first time on September 17, 1966 from the Baikonur Tyuratam Cosmodrome and ended service in 1972. All that were launched carried military and experimental payloads.