Astris Propellants: N2O4/Aerozine-50. Thrust(vac): 23.300 kN (5,238 lbf). Thrust(sl): 19.600 kN (4,406 lbf). Isp: 310 sec. Isp (sea level): 260 sec. Burn time: 330 sec. Mass Engine: 68 kg (149 lb). Diameter: 2.00 m (6.50 ft). Chambers: 1. Thrust to Weight Ratio: 35.00. Country: Germany. First Flight: 1964. Last Flight: 1971. Flown: 11. Astris used on Rocket Stages Used on stage: Europa-3. on launch vehicle: Europa.                   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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