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astronautix.com R-56 Block O
R- 56 Stage 3
R- 56 Stage 3 -

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Gross Mass: 32,000 kg. Empty Mass: 2,000 kg. Thrust (vac): 55,500 kgf. Isp: 327 sec. Burn time: 190 sec. Propellants: N2O4/UDMH Diameter: 4.0 m. Span: 4.0 m. Length: 7.0 m. Country: Ukraine. No Engines: 1. RD-0213 Other designations: Orbital Block. Comments: Empty mass estimated (rounded figures given in source material indicates impossible 31 tonnes gross with 30 tonnes propellant).
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Last update 12 March 2001.
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© Mark Wade, 2001 .