This page no longer updated from 31 October 2001. Latest version can be found at N1 Block V-II

Gross Mass: 805,000 kg. Empty Mass: 115,000 kg. Thrust (vac): 800,000 kgf. Isp: 440 sec. Burn time: 380 sec. Propellants: Lox/LH2 Diameter: 10.0 m. Span: 10.0 m. Length: 50.0 m. Country: Russia. No Engines: 4. NK-15VM Status: Design 1965. Comments: N1 improvement study, 1965. Lox/LH2 replacement for Block B second stage.
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Last update 12 March 2001.
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© Mark Wade, 2001 .