This page no longer updated from 31 October 2001. Latest version can be found at Proton K-2

Gross Mass: 167,828 kg. Empty Mass: 11,715 kg. Thrust (vac): 244,652 kgf. Isp: 327 sec. Burn time: 206 sec. Propellants: N2O4/UDMH Isp(sl): 230 sec. Diameter: 4.2 m. Span: 4.2 m. Length: 14.0 m. Country: Russia. No Engines: 4. RD-0210 Status: Hardware. Other designations: 8S811K.
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Last update 12 March 2001.
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© Mark Wade, 2001 .