YF-209
| Country of origin | China |
|---|---|
| Designer | Academy of Aerospace Liquid Propulsion Technology |
| Status | Active |
| Liquid-fuel engine | |
| Propellant | LOX / CH4 |
| Cycle | Gas-generator cycle |
| Configuration | |
| Chamber | 1 |
| Performance | |
| Thrust, vacuum | 825.3 kilonewtons (185,500 lbf) |
| Thrust, sea-level | 735 kilonewtons (165,000 lbf) |
| Specific impulse, vacuum | 329s |
| Specific impulse, sea-level | 293s |
| Used in | |
| Long March 12A | |
| References | |
| References | |
The YF-209 is a liquid cryogenic rocket engine burning liquid methane and liquid oxygen in a gas-generator cycle. The engine is designed for reusability and commercial use.