IUS-2 IUS Credit - NASA Gross Mass: 3,919 kg (8,639 lb). Empty Mass: 1,170 kg (2,570 lb). Thrust (vac): 78.413 kN (17,628 lbf). Isp: 304 sec. Burn time: 103 sec. Propellants: Solid. Isp(sl): 200 sec. Diameter: 1.61 m (5.28 ft). Span: 1.61 m (5.28 ft). Length: 2.08 m (6.82 ft). Country: USA. No Engines: 1. Engine: SRM-2. Cost $ : 30.000 million. First Flight: 1982. Last Flight: 2005. No Launched: 58. Used as: Shuttle, Titan 34D. Other designations: TOS. 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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