![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/RD-107_Vostok.jpg/640px-RD-107_Vostok.jpg&w=640&q=50)
RD-107
Russian rocket engine / From Wikipedia, the free encyclopedia
The RD-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 a with nozzle) and either two (RD-107) or four (RD-108) vernier chambers.
Quick Facts Country of origin, Designer ...
![]() RD-107 engine on display at the Museum of Space and Missile Technology in Saint Petersburg. | |
Country of origin | ![]() ![]() |
---|---|
Designer | OKB-456 |
Manufacturer | JSC Kuznetsov[1] |
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 | [2][3][4][5][6] |
Notes | Performance figures are for RD-107A |
Close
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[update].