AKA: OOST ISI. Status: Study 1963. Thrust: 85,386.00 kN (19,195,536 lbf). Gross mass: 5,125,000 kg (11,298,000 lb). Unfuelled mass: 292,000 kg (643,000 lb). Specific impulse: 455 s. Specific impulse sea level: 365 s. Burn time: 248 s. Height: 57.90 m (189.90 ft). Diameter: 21.30 m (69.80 ft). Span: 21.30 m (69.80 ft).
Cost $ : 117.600 million. No Engines: 15.