BF-20

The BF-20 (Chinese: 蓝焱-20; pinyin: Lányàn-20, lit. Blue Flame 20) is a full-flow staged combustion cycle rocket engine burning liquid methane and liquid oxygen under development by LandSpace.

BF-20

Country of origin	China
Manufacturer	LandSpace
Status	In development
Liquid-fuel engine
Propellant	LOX / CH4
Mixture ratio	3.6 (±8%) (adjustable)
Cycle	Full-flow staged combustion
Performance
Thrust, vacuum	2,366 kilonewtons (532,000 lbf)
Thrust, sea-level	2,200 kilonewtons (490,000 lbf)
Throttle range	40%~120%
Chamber pressure	26 MPa (3,800 psi)
Specific impulse, vacuum	353.16s
Specific impulse, sea-level	328.47s
Used in
ZQ-3
References
Notes	[1]

History

In 2021, LandSpace initiated the development of BF-20 for its Zhuque-3 rocket. As of 2024, the technical design of the engine has been completed, and a hot fire test is scheduled for 2025, with the goal of achieving flight readiness by 2027.^[2][3]