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Monoblock UR-500-1M
Part of Polyblock UR-500-1P Family
N2O4/UDMH propellant rocket stage. Original conventional 'Monoblock' design for Proton first stage.

AKA: UR-500 Monoblok Stage 1M. Status: Design 1962. Thrust: 8,989.70 kN (2,020,965 lbf). Gross mass: 367,360 kg (809,890 lb). Unfuelled mass: 25,560 kg (56,350 lb). Specific impulse: 310 s. Specific impulse sea level: 280 s. Burn time: 115 s. Height: 30.00 m (98.00 ft). Diameter: 6.20 m (20.30 ft). Span: 6.20 m (20.30 ft).

No Engines: 4.



Country: Russia. Engines: 8D43 + 11D43, 11D43. Launch Vehicles: Monoblock UR-500. Propellants: N2O4/UDMH.

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