"Lingyun" is the first liquid rocket engine launched by Kyushu Yunjian for the commercial aerospace market. It is the first liquid engine product in the domestic aerospace field that has multiple start-ups, deep variable thrust capabilities, and supports rocket recycling and reuse. Excellent multiple starting ability and 20% -100% measured variable thrust performance, through multi-stage parallel connection can meet the launch, recovery and reuse of small liquid rockets, suitable for a variety of loads, scenarios, and in the upper stage of the rocket has a broader demand. At present, the "Lingyun" engine has completed the deep variable thrust thermal test evaluation and passed the customer review.
"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.