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Longyun Engine

"Longyun" is the second large thrust, recyclable liquid rocket engine launched by Jiuzhou Yunjian. The "Longyun" engine has a sea-level design weight-to-weight ratio> 75, sea level thrust of 70 tons, vacuum version of thrust of 80 tons, and thrust adjustment The range is 30% ~ 110%. At present, the "Longyun" engine has completed the gas generator hot test evaluation and passed the customer review. It will complete the whole machine test evaluation in 2021 and will be officially launched into the aerospace market.
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Longyun Engine

 
 

70 Ton Liquid Oxygen/Methane Rocket Engine

 

"Longyun" is the second large thrust, recyclable liquid rocket engine launched by Jiuzhou Yunjian. The "Longyun" engine has a sea-level design weight-to-weight ratio> 75, sea level thrust of 70 tons, vacuum version of thrust of 80 tons, and thrust adjustment The range is 30% ~ 110%. At present, the "Longyun" engine has completed the gas generator hot test evaluation and passed the customer review. It will complete the whole machine test evaluation in 2021 and will be officially launched into the aerospace market.

 

 

Ground thrust: 686.5kN

Vacuum thrust: 770.2kN

Ground specific impulse: 290s

Vacuum version specific impact: 350s

Engine weight : 880kg

The maximum swing angle of the engine: ± 8 °

Thrust adjustment range: 110% -30%

Ability to start multiple times in a single task: ≥3

Single working time: ≥200s

Repeated use times: ≥30

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