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Tsyklon 2-1
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Gross Mass: 122,300 kg (269,600 lb). Empty Mass: 6,400 kg (14,100 lb). Thrust (vac): 2,640.000 kN (593,490 lbf). Isp: 301 sec. Burn time: 120 sec. Propellants: N2O4/UDMH. Isp(sl): 269 sec. Diameter: 3.00 m (9.80 ft). Span: 3.00 m (9.80 ft). Length: 18.90 m (62.00 ft). Country: Ukraine. No Engines: 1. Engine: RD-251. Status: In production. Cost $ : 6.000 million. First Flight: 1969. Last Flight: 2006. No Launched: 106. Other designations: 11S681. SL-11; 11K68;R-36M
Used on Launch Vehicles:
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