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Monoblock UR-500-2
N2O4/UDMH propellant rocket stage. Original Proton second stage design.

AKA: UR-500 Stage 2. Status: Design 1962. Thrust: 3,183.20 kN (715,612 lbf). Gross mass: 137,700 kg (303,500 lb). Unfuelled mass: 16,000 kg (35,000 lb). Specific impulse: 320 s. Burn time: 119 s. Height: 10.90 m (35.70 ft). Diameter: 4.10 m (13.40 ft). Span: 4.10 m (13.40 ft).

No Engines: 4.



Subtopics

UR-500-2 N2O4/UDMH propellant rocket stage. Proton UR-500 second stage. Flew only on two-stage version of Proton. Empty mass is correct; all other values estimated based on UR-500 Stage 2 original design and UR-500K stage 2 figures.

Proton K-2 Proton K stage 2.

UR-500MK-2 LOx/Kerosene propellant rocket stage. Empty mass estimated based on overall vehicle mass fraction. Length estimated based on total mass.

Country: Russia. Engines: RD-0213. Launch Vehicles: Monoblock UR-500, Polyblock UR-500. Propellants: N2O4/UDMH.

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