YF-23 (rocket engine)

YF-23E
Country of origin	China
First flight	1974-11-05
Designer	Academy of Aerospace Liquid Propulsion Technology
Application	Vernier engine
Associated LV	Feng Bao 1, Long March 2, Long March 3 and Long March 4
Status	In Production
Liquid-fuel engine
Propellant	N2O4 / UDMH
Mixture ratio	1.57
Configuration
Chamber	4
Performance
Thrust, vacuum	47.1 kN (10,600 lbf)
Specific impulse, vacuum	297 seconds (2.91 km/s)
Burn time	300s
Used in
	Long March 2F, Long March 3A, Long March 3B, Long March 3C, Long March 4B and Long March 4C second stage.
References
References

The YF-23 is a liquid rocket vernier engine, burning N₂O₄ and UDMH.^[5] It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules.^[3]^[6]^[7]^[8]

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