This page no longer updated from 31 October 2001. Latest version can be found at GR-1 Stage 3

Gross Mass: 8,500 kg. Empty Mass: 1,000 kg. Thrust (vac): 6,800 kgf. Isp: 350 sec. Burn time: 380 sec. Propellants: Lox/Kerosene Isp(sl): 0 sec. Diameter: 2.4 m. Span: 2.4 m. Length: 4.6 m. Country: Russia. No Engines: 1. 8D726 Status: Development 1964. Other designations: 8K513 Blok V. Comments: Masses estimated based on total vehicle mass of 117 tonnes. This stage was a close cousin of that developed for the Molniya launch vehicle.
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Last update 12 March 2001.
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© Mark Wade, 2001 .