BE-4
Type: Lower Stage Engine
Country of Origin: United States
Manufacturer: Blue Origin
First Flight: January 8, 2024
Status: Active
Propellant (O/F): Liquid Oxygen/Liquid Methane
Mixture Ratio (O/F by mass):
Cycle: Oxygen-rich Staged Combustion
Thrust (vac.):
Thrust (s.l.): 2450 kN
Throttle: 40% to 100%
ISP (vac.): 340s
ISP (s.l.):
Chamber Pressure: 1950 psi
Nozzle Ratio:
Burn time:
Mass:
Length:
Diameter:
Used in: New Glenn, Vulcan
Links: