Gross Mass: 25,810 kg.
Empty Mass: 2,400 kg. Thrust (vac): 62,500 kgf. Isp: 322 sec. Burn time: 113 sec. Propellants: N2O4/UDMHDiameter: 2.2 m. Span: 2.2 m. Length: 10.0 m. Country: Russia. No Engines: 1. RD-0205Status: Hardware. Other designations: 8K81 Stage 2. Comments: Tsniimash has 1:10 structural simulation model. Developed 1960-1965. Orevo has sectioned hardware. All data accurate except empty mass prorated between first and second stages.