|UR-500 First Design - Initial design of the UR-500 Global Rocket was a straightforward cluster of UR-200 ICBM's. This was soon abandoned in favor of a more efficient design.|
Credit: © Mark Wade. 7,676 bytes. 61 x 437 pixels.
While Chelomei's OKB was still preparing the UR-200 draft project, it was proposed to use this as the basis for the UR-500 heavy universal rocket, with five times the payload capacity. These initial 1961 UR-500 studies for the GR-2 requirement at first consisted simply of 4 two-stage UR-200 rockets lashed together, the first and second stages working in parallel in clusters. A third stage would be modified from the UR-200 second stage. (Yangel proposed a similar solution, his R-56 rockets being composed of R-46’s clustered together). However study of this configuration, which included manufacturing of a dynamic test article (now in the Tsniimash museum), indicated that the payload capacity could not meet the military’s requirements. The payload of this configuration is said to be five times that of the UR-200 (ie around 10,000 kg) as opposed to the 12,000 kg payload calculated for the selected UR-500 polyblock configuration. The echo of this configuration in the final Proton design was in the upper stage engines, which were direct descendants of those on the UR-200.
LEO Payload: 10,000 kg. to: 200 km Orbit. Liftoff Thrust: 815,230 kgf. Total Mass: 571,050 kg. Core Diameter: 3.0 m. Total Length: 48.0 m.
The initial design consisted simply of 4 two-stage UR-200 rockets lashed together, the first and second stages working in parallel in clusters. A third stage would be modified from the UR-200 second stage.
|UR-100 and UR-500 - UR-100 and UR-500 Dynamic test models|
Credit: © Mark Wade. 57,367 bytes. 389 x 576 pixels.
|Universal Rockets - Chelomei's Universal Rocket Family. From left to right: 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 as flown. UR-500K configuration with Block D upper stage.|
Credit: © Mark Wade. 36,031 bytes. 630 x 351 pixels.