Antares 1A Gross Mass: 1,225 kg (2,700 lb). Empty Mass: 294 kg (648 lb). Thrust (vac): 60.497 kN (13,600 lbf). Isp: 256 sec. Burn time: 39 sec. Propellants: Solid. Isp(sl): 233 sec. Diameter: 0.78 m (2.55 ft). Span: 0.78 m (2.55 ft). Length: 3.38 m (11.08 ft). Country: USA. No Engines: 1. Engine: X-254. Cost $ : 4.000 million. First Flight: 1960. Last Flight: 1978. No Launched: 45. No Failed: 1. Used on Launch Vehicles: Blue Scout 1. Blue Scout 2. Blue Scout Junior. Scout X-1.                   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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