Neptune

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Engine Model: Neptune. Designer: ONERA. Gross Mass: 500 kg (1,100 lb). Empty Mass: 150 kg (330 lb). Propellants: Solid. Thrust(vac): 20.000 kN (4,496 lbf). Burn time: 32 sec. Diameter: 0.39 m (1.27 ft). Length: 3.20 m (10.40 ft). Country: USA. Neptune used on Rocket Stages Used on stage: Neptune. on launch vehicle: Antares. 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 - 2008 except where otherwise noted.