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Engine Model: 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.
Engine Model: X-259A. Manufacturer Name: X-259A. Other Designations: Antares 3A. Designer: Thiokol. Gross Mass: 1,637 kg (3,608 lb). Empty Mass: 352 kg (776 lb). Propellants: Solid. Thrust(vac): 80.800 kN (18,165 lbf). Isp: 295 sec. Burn time: 48 sec. Diameter: 0.76 m (2.49 ft). Length: 3.51 m (11.51 ft). Chambers: 1. Chamber Pressure: 48.00 bar. Area Ratio: 59.00. Country: USA. Status: Out of production. First Flight: 1979. Last Flight: 1994. Flown: 17.
X-259 used on Rocket Stages
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