RD-107
RD-107 engine on display at the Museum of Space and Missile Technology in Saint Petersburg. | |
| Country of origin | Soviet Union Russia |
|---|---|
| Designer | OKB-456 |
| Manufacturer | JSC Kuznetsov |
| Application | Booster/first stage |
| Associated LV | R-7 family |
| Predecessor | RD-105 |
| Status | In production |
| Liquid-fuel engine | |
| Propellant | LOX / RP-1 |
| Cycle | Gas-generator |
| Performance | |
| Thrust, vacuum | 1,020 kN (230,000 lbf) |
| Thrust, sea-level | 839 kN (189,000 lbf) |
| Specific impulse, vacuum | 320.2 s (3.140 km/s) |
| Specific impulse, sea-level | 263.3 s (2.582 km/s) |
| Dimensions | |
| Dry mass | 1,190 kg (2,620 lb) |
| References | |
| References | |
| Notes | Performance figures are for RD-107A |
The RD-107 (Russian: Ракетный Двигатель-107, romanized: Raketnyy Dvigatel-107, lit. 'Rocket Engine 107') and its sibling, the RD-108, are a type of rocket engine used on the R-7 rocket family. RD-107 engines are used in each booster and the RD-108 is used in the central core. The engines have four main combustion chambers (each with a nozzle) and either two (RD-107) or four (RD-108) vernier chambers.
The engines were first developed in the mid-1950s to launch the R-7 Semyorka, the first intercontinental ballistic missile. The R-7 was later adapted into space launch vehicles and the engines have been improved over several generations. The most recent versions are the RD-107A and RD-108A engines are used to launch the Soyuz-2, which is in active service as of 2024.