Status: Study 1963. Thrust: 30,685.00 kN (6,898,262 lbf). Gross mass: 8,526,000 kg (18,796,000 lb). Unfuelled mass: 172,000 kg (379,000 lb). Specific impulse: 428 s. Specific impulse sea level: 310 s. Burn time: 500 s. Height: 73.80 m (242.10 ft). Diameter: 25.90 m (84.90 ft). Span: 25.90 m (84.90 ft).