BE-4

The Blue Engine 4, or BE-4 is a staged-combustion rocket engine under development by Blue Origin. The BE-4 is being developed with private funding, the engine is "being developed without any government assistance". The engine has been designed to produce 2,400 kilonewtons (550,000 lbf) of thrust. Both first-stage and second-stage versions of the engine are planned. First flight is expected no earlier than 2019.

BE-4

The Blue Engine 4, or BE-4 is a staged-combustion rocket engine under development by Blue Origin. The BE-4 is being developed with private funding, the engine is "being developed without any government assistance". The engine has been designed to produce 2,400 kilonewtons (550,000 lbf) of thrust. Both first-stage and second-stage versions of the engine are planned. First flight is expected no earlier than 2019.