Sapwood SS-6 8K71PS
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| Sapwood SS-6 8K71PS | ||
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| 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