Saturn MS-IVB-1
Gross Mass: 120,500 kg (265,600 lb). Empty Mass: 13,900 kg (30,600 lb). Thrust (vac): 1,031.600 kN (231,913 lbf). Isp: 421 sec. Burn time: 475 sec. Propellants: Lox/LH2. Isp(sl): 200 sec. Diameter: 6.61 m (21.68 ft). Span: 6.61 m (21.68 ft). Length: 18.08 m (59.31 ft). Country: USA. No Engines: 1. Engine: J-2. Status: Study 1965.

Marshall studies, 1965: S-IVB structurally strengthened to handle larger payloads, otherwise unchanged


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