IUS-1 IUS Credit - NASA Gross Mass: 10,841 kg (23,900 lb). Empty Mass: 1,134 kg (2,500 lb). Thrust (vac): 181.501 kN (40,803 lbf). Isp: 296 sec. Burn time: 152 sec. Propellants: Solid. Isp(sl): 220 sec. Diameter: 2.34 m (7.67 ft). Span: 2.34 m (7.67 ft). Length: 3.52 m (11.54 ft). Country: USA. No Engines: 1. Engine: SRM-1. Cost $ : 40.000 million. First Flight: 1982. Last Flight: 2005. No Launched: 58. No Failed: 1. Used as: Shuttle, Titan 34D. Other designations: Orbus 21D. Used on Launch Vehicles: Titan 34D. Titan 4. Titan 4B.                   Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2007 except where otherwise noted.

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