Status: Study 1956. Thrust: 406.77 kN (91,446 lbf). Gross mass: 12,400 kg (27,300 lb). Unfuelled mass: 2,100 kg (4,600 lb). Specific impulse: 297 s. Burn time: 73 s. Height: 2.90 m (9.50 ft). Diameter: 2.14 m (7.02 ft). Span: 2.14 m (7.02 ft).