Status: Study 1960. Thrust: 3,330.00 kN (748,610 lbf). Gross mass: 177,000 kg (390,000 lb). Unfuelled mass: 29,000 kg (63,000 lb). Specific impulse: 830 s. Burn time: 355 s. Height: 77.70 m (254.90 ft). Diameter: 6.70 m (21.90 ft). Span: 10.10 m (33.10 ft).