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): Low Cost Booster, 260 inch solid motor, full length.

LEO Payload: 39,000 kg. to: 185 km Orbit. at: 28.0 degrees. Liftoff Thrust: 2,494,750 kgf. Total Mass: 1,843,900 kg. Core Diameter: 6.6 m. Total Length: 67.0 m.

• Stage Number: 1. 1 x Saturn LCB-SR Gross Mass: 1,678,300 kg. Empty Mass: 136,100 kg. Thrust (vac): 2,756,800 kgf. Isp: 263 sec. Burn time: 144 sec. Isp(sl): 238 sec. Diameter: 6.6 m. Span: 9.3 m. Length: 38.1 m. Propellants: Solid No Engines: 1. AJ-260X

• Stage Number: 2. 1 x Saturn IVB (S-IB) Gross Mass: 118,800 kg. Empty Mass: 12,900 kg. Thrust (vac): 105,200 kgf. Isp: 421 sec. Burn time: 475 sec. Isp(sl): 200 sec. Diameter: 6.6 m. Span: 6.6 m. Length: 17.8 m. Propellants: Lox/LH2 No Engines: 1. J-2

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