Sapwood SS-6 8K71PS

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Sapwood SS-6 8K71PS
Missing image
SS6_Sapwood_launch_vehicle.png
SS-6 rocket. (NASA)

Stages 1 1/2
0 - Strap-on Boosters Engines 4 x RD-107
Thrust 4 x 99,000 kgf = 396 Mgf (3.89 MN)
Burn time 118 seconds
Fuels LOX/kerosene
1 - Core Stage Engines 1 x RD-108
Thrust 912 kN
Burn time 301 seconds
Fuels LOX/kerosene
Launch Vehicle 1st Launch October 4, 1957
Payload LEO 65-degree 500 kg

Sapwood SS-6 8K71PS was an ICBM used as a launch vehicle by the Soviet Union to launch Sputnik 1 and Sputnik 2. No other rocket stages were added to the ICBM to launch the satellites. The SS-6 8K71PS is essentially a modified R-7 ICBM. It was also known under the name "semiorka".

Sapwood SS-6 8K71PS specifications

  • Stage Number: 0 - Strap-on Boosters; 4 x 8K71K-0
    • Gross Mass: 43,300 kg
    • Empty Mass: 3,710 kg
    • Thrust (vac): 4 × 99,000 kgf = 396 Mgf (3.89 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: 9.76 m
    • Length: 19.00 m
    • Propellants: Lox/Kerosene
    • Engines: 1 x RD-107-8D74-1959 per booster = 4
  • Stage Number: 1 - Core stage; 1 x 8K71K-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
  • Total Mass: 267,000 kg
  • Total Liftoff Thrust: 3.89 MN
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