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Monoblock UR-500
Part of Proton
UR-500 Monoblock
UR-500 Monoblock
UR-500 conventional 'monoblock' configuration studied at the beginning of the program. This design was slightly lighter than the selected 'polyblock' configuration but had disadvantages in the missile role: difficult ground handling and payload access.
Credit: © Mark Wade
During UR-500 design studies, two variants of the first stage were considered: polyblock and monoblock. The monoblock approach was that the first stage be assembled from two separate modules with the same diameter: an upper oxidizer module and a lower fuel and engine block. In assembly trials of this design it proved difficult, because of the height of the first stage, to obtain access to the upper stages and payload atop the rocket. Although there was a payload advantage compared to the more compact polyblock design, this was relatively small and outweighed by the operational difficulties.

Status: Design 1962. Payload: 12,000 kg (26,000 lb). Thrust: 8,119.80 kN (1,825,404 lbf). Gross mass: 543,400 kg (1,197,900 lb). Height: 54.00 m (177.00 ft). Diameter: 6.20 m (20.30 ft). Apogee: 200 km (120 mi).

This variant was studied by Chelomei's Filial Number 1, Chief Designer V N Bugayskiy, under the lead engineer M S Mishetyan.

The design mass and engine performance figures for this version have been given. The calculated payload is 12,000 kg (26,000 lb) to a 200 km orbit.

Stage Data - Monoblock UR-500



Family: orbital launch vehicle. Country: Russia. Engines: 8D43 + 11D43, RD-0212, RD-0213, 11D43, 8D43. Stages: Monoblock UR-500-1M, Monoblock UR-500-2, Monoblock UR-500-3. Agency: Chelomei bureau.
Photo Gallery

Universal RocketsUniversal Rockets
Chelomei's Universal Rocket Family. From left to right: UR-100 (three variants) and UR-100N (three variants). UR-200. Original UR-500 configuration, composed of clustered UR-200's. Conventional UR-500 monoblock configuration. Selected UR-500 polyblock configuration. UR-500 two-stage configuration - ICBM version and as flown. UR-500K configuration with LK-1; with Block D upper stage and L1; with Block D upper stage for satellite launch. UR-700.
Credit: © Mark Wade



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