Archimedes (rocket engine)
| Country of origin | United States New Zealand | 
|---|---|
| Designer | Rocket Lab | 
| Manufacturer | Rocket Lab | 
| Application | First- and second-stage engine | 
| Status | In development | 
| Liquid-fuel engine | |
| Propellant | LOX / CH4 | 
| Cycle | Oxidizer-rich staged combustion | 
| Configuration | |
| Chamber | 1 | 
| Performance | |
| Thrust, vacuum | 890 kN (200,000 lbf) | 
| Thrust, sea-level | 730 kN (165,000 lbf) | 
| Throttle range | 50–100% | 
| Specific impulse, vacuum | 365 s (3.58 km/s) | 
| Specific impulse, sea-level | 329 s (3.23 km/s) | 
| Used in | |
| Neutron | |
| References | |
| References | |
Archimedes is a liquid-fuel rocket engine burning liquid oxygen and liquid methane in an oxidizer-rich staged combustion cycle. It is designed by aerospace company Rocket Lab for its Neutron rocket.