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N1 Block R
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Gross Mass: 23,000 kg (50,000 lb). Empty Mass: 4,300 kg (9,400 lb). Thrust (vac): 73.500 kN (16,523 lbf). Isp: 440 sec. Burn time: 1,080 sec. Propellants: Lox/LH2. Diameter: 4.10 m (13.40 ft). Span: 4.10 m (13.40 ft). Length: 8.70 m (28.50 ft). Country: Russia. No Engines: 1. Engine: RD-56. Status: Development ended 1971. Designed 1965-1971 as replacement for N-1 Blok D. Cancelled 1971 in favor of Blok Sr; revived and developed in 1974-1976. First static test Oct 12 1976. Two stages tested 1976-1977. Strangely never replaced Blok D on Proton.
Used on Launch Vehicles:
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© Mark Wade, 1997 - 2007 except where otherwise noted.
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