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Longyun (rocket engine)

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Lingyun
Country of originChina
ManufacturerJiuzhou Yunjian
StatusUnder development
Liquid-fuel engine
PropellantLOX / CH4
Performance
Thrust, vacuum770.2 kilonewtons (173,100 lbf)
Thrust, sea-level686.5 kilonewtons (154,300 lbf)
Throttle range30%~100%
Specific impulse, vacuum350s
Specific impulse, sea-level290s
Dimensions
Dry mass880 kg (1,940 lb)
References
Notes[1]

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

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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]

In April 2024, Longyun passed a long duration hot firing test with the servo mechanism rotating to the maximum angle of ±8°. The engine has also reportedly passed the customer acceptance test.[6]

References

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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.
  6. ^ "九州云箭 70 吨级"龙云"火箭发动机高压泵后热摇摆试验圆满成功". www.ithome.com. ithome.