Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): S-IC Technology Liquid Booster: 260 inch liquid booster with 2 x F-1 engines, recoverable/reusable

Manufacturer: Von Braun. LEO Payload: 39,000 kg (85,000 lb). to: 185 km Orbit. at: 28.00 degrees. Liftoff Thrust: 13,540.000 kN (3,043,910 lbf). Total Mass: 1,118,100 kg (2,464,900 lb). Core Diameter: 6.61 m (21.68 ft). Total Length: 65.00 m (213.00 ft).

• Stage Number: 1. 1 x Stage: Saturn S-IC-TLB. Gross Mass: 952,500 kg (2,099,900 lb). Empty Mass: 68,000 kg (149,000 lb). Thrust (vac): 15,532.700 kN (3,491,890 lbf). Isp: 304 sec. Burn time: 167 sec. Isp(sl): 265 sec. Diameter: 6.61 m (21.68 ft). Span: 10.58 m (34.71 ft). Length: 36.36 m (119.29 ft). Propellants: Lox/Kerosene. No Engines: 2. Engine: F-1. Status: Study 1967. Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): S-IC Technology Liquid Booster: 260 inch liquid booster with 2 x F-1 engines, recoverable/reusable

• Stage Number: 2. 1 x Stage: Saturn IVB (S-IB). Gross Mass: 118,800 kg (261,900 lb). Empty Mass: 12,900 kg (28,400 lb). Thrust (vac): 1,031.600 kN (231,913 lbf). Isp: 421 sec. Burn time: 475 sec. Isp(sl): 200 sec. Diameter: 6.61 m (21.68 ft). Span: 6.61 m (21.68 ft). Length: 17.80 m (58.30 ft). Propellants: Lox/LH2. No Engines: 1. Engine: J-2. Saturn IB version of S-IVB stage. Due to lower payload payload, 300 kg saving in structure compared to Saturn V version. Due to deletion of restart requirement, 700 kg saving in propulsion system (primarily reduction in helium for restart).

• Lowther, Scott, Saturn: Development, Details, Derivatives and Descendants, Work in progress. Availabe chapters may be ordered directly from Scott Lowther at web site indicated. Accessed at: http://www.webcreations.com/ptm.