X-259 Manufacturer Name: X-259. Other Designations: Antares 2. Designer: Thiokol. Gross Mass: 1,400 kg (3,000 lb). Empty Mass: 300 kg (660 lb). Propellants: Solid. Thrust(vac): 93.100 kN (20,930 lbf). Thrust(sl): 74.000 kN (16,635 lbf). Isp: 293 sec. Isp (sea level): 233 sec. Burn time: 36 sec. Diameter: 0.78 m (2.55 ft). Length: 2.90 m (9.50 ft). Chambers: 1. Country: USA. First Flight: 1962. Last Flight: 1983. Flown: 92. X-259 used on Rocket Stages Used on stage: Antares 2. on launch vehicle: Scout A. Used on stage: Antares 2. on launch vehicle: Scout B. Used on stage: Antares 2. on launch vehicle: Scout D. Used on stage: Antares 2. on launch vehicle: Scout F. Used on stage: Antares 2. on launch vehicle: Scout X-2. Used on stage: Antares 2. on launch vehicle: Scout X-3. Used on stage: Antares 2. on launch vehicle: Scout X-4.                   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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