BF-20

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

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.

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]

References

^ Zhang, Xiaoping; Zhou, Yaqiang; Wei, Yan (2023-01-17). "Current State of LOX/Methane Engine Development - 液氧甲烷发动机发展现状". d.wanfangdata.com.cn (1): 126–133. doi:10.3969/j.issn.1674-5825.2023.01.017. Retrieved 22 May 2024.
^ Guo, Songjiao; Zhang, Yuhong (24 April 2024). "蓝箭样本：可重复使用火箭缘何选择液氧甲烷？". finance.sina.cn. Retrieved 22 May 2024.
^ Jones, Andrew (19 January 2024). "China's Landspace conducts first VTVL test for reusable stainless steel rocket". SpaceNews. Retrieved 22 May 2024.

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[lspaper-1] Zhang, Xiaoping; Zhou, Yaqiang; Wei, Yan (2023-01-17). "Current State of LOX/Methane Engine Development - 液氧甲烷发动机发展现状". d.wanfangdata.com.cn (1): 126–133. doi:10.3969/j.issn.1674-5825.2023.01.017. Retrieved 22 May 2024.

[2] Guo, Songjiao; Zhang, Yuhong (24 April 2024). "蓝箭样本：可重复使用火箭缘何选择液氧甲烷？". finance.sina.cn. Retrieved 22 May 2024.

[3] Jones, Andrew (19 January 2024). "China's Landspace conducts first VTVL test for reusable stainless steel rocket". SpaceNews. Retrieved 22 May 2024.

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