Saturn IB-B

American orbital launch vehicle. Douglas Studies, 1965: S-IB with 225 k lbf H-1's; S-IVB stretched with 350,000 lbs propellants and HG-3 high performance engine.

LEO Payload: 22,700 kg (50,000 lb) to a 185 km orbit at 28.00 degrees.

Stage Data - Saturn IB-B

• Stage 1. 1 x Saturn S-IB-A. Gross Mass: 448,600 kg (988,900 lb). Empty Mass: 41,600 kg (91,700 lb). Thrust (vac): 9,045.600 kN (2,033,532 lbf). Isp: 296 sec. Burn time: 128 sec. Isp(sl): 262 sec. Diameter: 6.52 m (21.39 ft). Span: 6.52 m (21.39 ft). Length: 24.48 m (80.31 ft). Propellants: Lox/Kerosene. No Engines: 8. Engine: H-1c. Status: Study 1965. Comments: Douglas Studies, 1965: S-1B with 225 k lbf H-1's.

• Stage 2. 1 x Saturn MS-IVB-2. Gross Mass: 176,600 kg (389,300 lb). Empty Mass: 17,800 kg (39,200 lb). Thrust (vac): 1,401.300 kN (315,025 lbf). Isp: 447 sec. Burn time: 489 sec. Isp(sl): 200 sec. Diameter: 6.61 m (21.68 ft). Span: 6.61 m (21.68 ft). Length: 23.12 m (75.85 ft). Propellants: Lox/LH2. No Engines: 1. Engine: HG-3. Status: Study 1965. Comments: Douglas Studies, 1965: S-IVB with 315 k high pressure 3000 psia engine, 350,000 pounds propellant.