Gross Mass: 176,600 kg.
Empty Mass: 17,800 kg. Thrust (vac): 142,900 kgf. Isp: 447 sec. Burn time: 489 sec. Propellants: Lox/LH2Isp(sl): 200 sec. Diameter: 6.6 m. Span: 6.6 m. Length: 23.1 m. Country: USA. No Engines: 1. HG-3Status: Study 1965. Comments: Douglas Studies, 1965: S-IVB with 315 k high pressure 3000 psia engine, 350,000 pounds propellant.