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Engine Model: S-520. Designer: ISAS. Gross Mass: 2,300 kg (5,000 lb). Empty Mass: 400 kg (880 lb). Propellants: Solid. Thrust(vac): 143.100 kN (32,170 lbf). Burn time: 29 sec. Diameter: 0.52 m (1.70 ft). Length: 5.90 m (19.30 ft). Country: Japan.



S-520 used on Rocket Stages


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