GCRC Gross Mass: 210 kg (460 lb). Empty Mass: 31 kg (68 lb). Propellants: Solid. Thrust(vac): 11.600 kN (2,608 lbf). Thrust(sl): 10.600 kN (2,383 lbf). Isp: 230 sec. Isp (sea level): 210 sec. Burn time: 31 sec. Diameter: 0.50 m (1.64 ft). Length: 2.00 m (6.50 ft). Chambers: 1. Country: USA. First Flight: 1957. Last Flight: 1959. Flown: 12. GCRC used on Rocket Stages Used on stage: Vanguard 3. on launch vehicle: Vanguard.                   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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