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UR-500 Polyblock Stage 1P
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Gross Mass: 378,900 kg (835,300 lb). Empty Mass: 26,900 kg (59,300 lb). Thrust (vac): 8,989.700 kN (2,020,965 lbf). Isp: 310 sec. Burn time: 119 sec. Propellants: N2O4/UDMH. Isp(sl): 280 sec. Diameter: 4.10 m (13.40 ft). Span: 7.40 m (24.20 ft). Length: 21.20 m (69.50 ft). Country: USSR. No Engines: 4. Engine: 8D43 + 11D43. Status: Design 1962. Original 'Polyblock' design for Proton first stage. This was selected configuration; although somewhat greater in dry mass, it had the advantages of shorter length.
Used on Launch Vehicles:
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© Mark Wade, 1997 - 2007 except where otherwise noted.
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