| ONE MAIN ENGINE, OF A TOTAL OF FIVE, USED ON THE R-7 ROCKET. FOUR RD-107 ENGINES FOR THE PARALLEL STAGES + ONE RD-108 ENGINE FOR THE CENTER STAGE. |
| ONE MAIN ENGINE, OF A TOTAL OF FIVE, USED ON THE R-7 ROCKET. FOUR RD-107 ENGINES FOR THE PARALLEL STAGES + ONE RD-108 ENGINE FOR THE CENTER STAGE. |