Gross Mass: 1,250,000 kg.
Empty Mass: 210,000 kg. Thrust (vac): 800,000 kgf. Isp: 455 sec. Burn time: 580 sec. Propellants: Lox/LH2Isp(sl): 337 sec. Diameter: 7.0 m. Span: 40.0 m. Length: 91.0 m. Country: Russia. No Engines: 4. RD-0120Status: Study 1974. Comments: Configuration: delta wing with wingtip vertical stabilizers and canards. Engine type and performance, empty weight estimated.