 | Saturn IB-INT-27
Credit - © Mark Wade
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Orbital launch vehicle. Year: 1966. Family: Saturn I. Country: USA. Status: Study 1965. UA study, 1965. Saturn variant using various combinations of 156 inch rocket motors as first and second stages, with S-IVB upper stage.
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| Number of Strapon Motors | 4 | 3 | 2 | 2 |
| Number of Core Stage Motors | 1 | 1 | 1 | 0 |
| Payload with 4 Segment Motors | 79,000 | 68,000 | 54,000 | 36,000 |
| Payload with 3 Segment Motors | 70,000 | 59,000 | 45,000 | 29,000 |
| Payload with 2 Segment Motors | 57,000 | 47,000 | 36,000 | 24,000 |
| Payload with 1 Segment Motors | 45,000 | 39,000 | 27,000 | 18,000 |
Manufacturer: Von Braun. LEO Payload: 40,000 kg (88,000 lb). to: 185 km Orbit. at: 28.00 degrees. Liftoff Thrust: 65,813.000 kN (14,795,350 lbf). Total Mass: 3,068,800 kg (6,765,500 lb). Core Diameter: 6.61 m (21.68 ft). Total Length: 67.00 m (219.00 ft). Flyaway Unit Cost $: 200.000 million. in: 1985 unit dollars.
Stage Data - Saturn INT-27 - Stage Number: 1. 4 x Stage: UA 156 inch 4 Segment. Gross Mass: 725,500 kg (1,599,400 lb). Empty Mass: 49,250 kg (108,570 lb). Thrust (vac): 18,181.000 kN (4,087,251 lbf). Isp: 263 sec. Burn time: 94 sec. Isp(sl): 238 sec. Diameter: 3.96 m (12.99 ft). Span: 3.96 m (12.99 ft). Length: 38.00 m (124.00 ft). Propellants: Solid. No Engines: 1. Engine: UA-156. Status: Study 1965. 4 Segment version of basic 3-segment UA 156 motor.
- 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).
Bibliography and Further Reading - 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.
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