Gross Mass: 8,617,000 kg.
Empty Mass: 680,000 kg. Thrust (vac): 12,649,000 kgf. Isp: 330 sec. Burn time: 203 sec. Propellants: Lox/KeroseneIsp(sl): 310 sec. Diameter: 42.4 m. Span: 20.1 m. Length: 36.6 m. Country: USA. No Engines: 4. L-6.55Status: Study General Dynamics 1963. Comments: Massed estimated based on tank volumes, total thrust, and first stage burnout conditions. Recoverable stage of ballistic shape; separation at 3,420 m/s at 93,900 m altitude; splashdown using retrorockets under 7 parachutes 1340 km downrange.