| N1 Block V-III |
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Model: N1 Block V-III. Gross Mass: 325,000 kg (716,000 lb). Empty Mass: 35,000 kg (77,000 lb). Thrust (vac): 2,350.000 kN (528,300 lbf). Isp: 440 sec. Burn time: 510 sec. Propellants: Lox/LH2. Diameter: 8.00 m (26.20 ft). Span: 8.00 m (26.20 ft). Length: 27.00 m (88.00 ft). Country: Russia. No Engines: 6. Motor: RD-57. Status: Study 1965. First Flight: 1967. Last Flight: 1971. No Launched: 2. N1 improvement study, 1965. Lox/LH2 replacement for Block V third stage. Pursued into 1966 and later, but later efforts concentrated on Block S, R, and SR cryogenic stages. Used on Launch Vehicles:
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