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| Vostok | SL -1 | A | Relatively unmodified R-7 ICBM test vehicles used to launch first two Sputniks |
| Vostok | SL -2 | A | Modified R-7 ICBM used to launch Sputnik 3 |
| Department of Defence Designation | SL -1 & SL - 2 | |
| Library of Congress Designation | A | |
| Manufacturer's Designation | R 7 | |
| Stages | Two | |
| First Stage | Engines | 4 x RD-107 |
| Fuel | Kerosene | |
| Oxidiser | Liquid Oxygen | |
| Second Stage | Engines | 1 x RD-108 |
| Fuel | Kerosene | |
| Oxidiser | Liquid Oxygen | |
| Launch Capability | ||