
The BE-4 is our fourth-generation liquid rocket engine, made to take us into orbit and beyond.
America's next Rocket Engine
The first ox-rich staged combustion engine made in the U.S. will power two vehicles in the next generation of American orbital rockets.
BE-4 Engine
BE-4 is the most powerful liquefied natural gas (LNG) fueled rocket engine ever developed. Using an oxygen-rich staged combustion cycle, BE-4 is capable of producing 2,400 kN (550,000 lbf) thrust with deep throttle capability.


The BE-4 engine
BE-4 In The Market
The first ox-rich staged combustion engine made in the U.S. will power two vehicles in the next generation of American orbital rockets.
Moving Towards Full Rate Production
BE-4 is currently undergoing full-scale engine development testing at our facilities in Van Horn, Texas. Full rate production will occur in our new engine manufacturing facility in Huntsville, Alabama.
Multiple Customers
Seven BE-4 engines will power New Glenn’s reusable booster, and two BE-4 engines will drive the first stage of United Launch Alliance’s Vulcan launch vehicle.