Status: Study NASA February 1962. Thrust: 1,031.98 kN (231,999 lbf). Gross mass: 204,044 kg (449,840 lb). Unfuelled mass: 22,671 kg (49,980 lb). Specific impulse: 425 s. Specific impulse sea level: 306 s. Burn time: 695 s. Height: 22.86 m (74.99 ft). Diameter: 6.61 m (21.68 ft). Span: 6.61 m (21.68 ft).