Longyun (rocket engine)

Lingyun
Country of origin	China
Manufacturer	Jiuzhou Yunjian
Status	Under development
Liquid-fuel engine
Propellant	LOX / CH4
Performance
Thrust, vacuum	770.2 kilonewtons (173,100 lbf)
Thrust, sea-level	686.5 kilonewtons (154,300 lbf)
Throttle range	30%~100%
Specific impulse, vacuum	350s
Specific impulse, sea-level	290s
Dimensions
Dry weight	880 kg (1,940 lb)
References
Notes

The Longyun (Chinese: 龙云; pinyin: Lóngyún, lit. Dragon Clouds) is a gas-generator cycle rocket engine burning liquid methane and liquid oxygen under development by Jiuzhou Yunjian.

History

In 2018, the gas generator test for the Longyun engine was completed.^[2] The engine completed multiple start-up hot test runs in May 2021.^[3] In October 2021, launch startup Rocket Pi signed a deal to use the Longyun engine to power its Darwin-1 reusable launch vehicle.^[4]

Space Epoch conducted a ground test of a 4.2-meter stainless steel stage powered by the Longyun engine in January 2023.^[5]

References

^ "Longyun Engine JiuZhou Cloud Arrow (Beijing) Space Technology Co., Ltd". en.jzyjspace.com.
^ Jones, Andrew (12 August 2019). "Chinese Linkspace reaches 300 meters with launch and landing test". SpaceNews. Retrieved 15 March 2024.
^ "JiuZhou YunJian "LongYun" engine has completed multiple start-up hot test runs_JiuZhou Cloud Arrow (Beijing) Space Technology Co., Ltd". en.jzyjspace.com. Retrieved 15 March 2024.
^ Jones, Andrew (31 October 2021). "New Chinese launch firm signs deal for reusable rocket engines". SpaceNews. Retrieved 15 March 2024.
^ Alaieva, Liliia (20 January 2023). "The Chinese are preparing to launch a "miniature Starship"". The Universe Magazine. Retrieved 15 March 2024.

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[1] "Longyun Engine JiuZhou Cloud Arrow (Beijing) Space Technology Co., Ltd". en.jzyjspace.com.

[2] Jones, Andrew (12 August 2019). "Chinese Linkspace reaches 300 meters with launch and landing test". SpaceNews. Retrieved 15 March 2024.

[3] "JiuZhou YunJian "LongYun" engine has completed multiple start-up hot test runs_JiuZhou Cloud Arrow (Beijing) Space Technology Co., Ltd". en.jzyjspace.com. Retrieved 15 March 2024.

[4] Jones, Andrew (31 October 2021). "New Chinese launch firm signs deal for reusable rocket engines". SpaceNews. Retrieved 15 March 2024.

[5] Alaieva, Liliia (20 January 2023). "The Chinese are preparing to launch a "miniature Starship"". The Universe Magazine. Retrieved 15 March 2024.

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