Vostok (rocket Family) - Vostok 8K72K

Vostok 8K72K

• Stage Number: 1 - Strap-on Boosters; 4 x Vostok 8K72K-0
  • Gross Mass: 43,300 kg
  • Empty Mass: 3,710 kg
  • Thrust (vac): 4 x 99,000 kgf (971 kN) = 3.88 MN
  • Isp: 313 s (3.07 kN·s/kg)
  • Burn time: 118 s
  • Isp(sl): 256 s (2.51 kN·s/kg)
  • Diameter: 2.68 m
  • Span: 8.35 m
  • Length: 19.00 m
  • Propellants: Lox/Kerosene
  • Engines: 1 x RD-107-8D74-1959 per booster = 4

• Stage Number: 2 - Core stage; 1 x Vostok 8K72K-1
  • Gross Mass: 100,400 kg
  • Empty Mass: 6,800 kg
  • Thrust (vac): 912 kN
  • Isp: 315 s (3.09 kN·s/kg)
  • Burn time: 301 s
  • Isp(sl): 248 s (2.43 kN·s/kg)
  • Diameter: 2.99 m
  • Length: 28.00 m
  • Propellants: Lox/Kerosene
  • Engine: 1 x RD-108-8D75-1959

• Stage Number: 3 - Final stage; 1 x Vostok 8K72K-2
  • Gross Mass: 7,775 kg
  • Empty Mass: 1,440 kg
  • Thrust (vac): 54.5 kN
  • Isp: 326 s (3.20 kN·s/kg)
  • Burn time: 365 s
  • Diameter: 2.56 m
  • Span: 2.56 m
  • Length: 2.84 m
  • Propellants: Lox/Kerosene
  • Engine: 1 x RD-0109