AKA: Kvant. Status: Design 1985. Thrust: 3,216.00 kN (722,985 lbf). Gross mass: 210,000 kg (460,000 lb). Unfuelled mass: 15,000 kg (33,000 lb). Specific impulse: 336 s. Specific impulse sea level: 298 s. Burn time: 195 s. Height: 23.00 m (75.00 ft). Diameter: 3.90 m (12.70 ft). Span: 3.90 m (12.70 ft).
No Engines: 4.