Status: Study 1965. Thrust: 912.00 kN (205,025 lbf). Gross mass: 195,000 kg (429,000 lb). Unfuelled mass: 36,300 kg (80,000 lb). Specific impulse: 421 s. Specific impulse sea level: 200 s. Burn time: 707 s. Height: 18.08 m (59.31 ft). Diameter: 6.61 m (21.68 ft). Span: 6.61 m (21.68 ft).