Comparison of orbital rocket engines
This page is an incomplete list of orbital rocket engine data and specifications.
Current, upcoming, and in-development rocket engines
| Engine | Origin | Designer | Vehicle | Status | Use | Propellant | Power cycle | Specific impulse | Thrust | Chamber pressure | Mass | Thrust:weight ratio | Oxidizer:fuel ratio | ||||
| Aeon-R |  United Statesnts|1,147,000Retired and canceled rocket engines
|