九州云箭（北京）空间科技有限公司
Jiuzhou Yunjian Space Technology Co., Ltd. (JZYJ), also known as China Cloud Arrow, is a Chinese rocket engine design and production startup founded in 2017 and based in Beijing. It specializes in methalox liquid rocket engines, like the Lingyun and Longyun, with capabilities such as multiple starts and variable thrust. The company partners with commercial launch providers in China, such as Linkspace and Rocket Pi, supplying engines for their launch vehicles and contributing to reusable rocket technology.
All verified mentions of this organization in source documents.
AS-1’s first stage will use nine Longyun engines from Jiuzhou Yunjian and generate about 700 tons of thrust.
Jiuzhou Yunjian's liquid rocket engine industrialization project has been approved.
Jiuzhou Yunjian's Longyun engine powered the December 22, 2025 second-stage test and generated 80 tons of thrust.
Astronstone plans to conduct a static fire of the AS-1 second-stage to verify its design and engine choice, possibly using Jiuzhou Yunjian’s Longyun engine producing 70 tons of thrust.
Astonestone plans a static fire of the AS-1 second stage to verify its design and the company’s engine choice, possibly Jiuzhou Yunjian’s Longyun engine generating 70 tons of thrust.
Space Epoch tested 3.0- and 4.0-meter-diameter propellant tanks and conducted engine tests using methane-liquid oxygen engines supplied by Jiuzhou Yunjian.
CASC’s Shanghai Academy of Spaceflight Technology (SAST) proposed a 4.0-meter-diameter launcher that would be able to launch up to 6,500 kg to 700-kilometer sun-synchronous orbit and would use engines developed by commercial engine maker Jiuzhou Yunjian.
Space Epoch conducted hot fire tests earlier in 2023 on a development test article using a 4.2-meter-diameter stainless steel propellant tank and methalox engines developed by Jiuzhou Yunjian.
Jiuzhou Yunjian signed a deal in October 2021 to supply its Longyun and smaller Lingyun engines to launch vehicle maker Rocket Pi for the Darwin-1 launcher.
Jiuzhou Yunjian signed a deal with startup Rocket Pi to supply engines to power the Darwin-1 reusable launch vehicle in October of the prior year.
Jiuzhou Yunjian signed a deal to provide 10-ton and 80-ton thrust Lingyun methalox engines to the launch startup Rocket Pi.
Linkspace signed an agreement with Jiuzhou Yunjian for 10-ton thrust methane-LOX engines to power a larger test vehicle.
Rocket Pi signed a deal with Jiuzhou Yunjian for supply of engines to power its Darwin-1 reusable launch vehicle.
Jiuzhou Yunjian signed a contract with Linkspace in 2019 to supply 10-ton-thrust engines following Linkspace’s 300-meter-altitude hop test.
Linkspace signed a deal with Jiuzhou Yunjian for engines for an orbital launcher after its 2019 VTVL test.
The RLV-T6 will be powered by ‘Lingyun’ 10-ton-thrust methalox engines developed by Jiuzhou Yunjian.
Jiuzhou Yunjian tested a newly developed ‘Lingyun’ 10-ton-thrust methalox motor that demonstrates deep throttling and restart capabilities.
Jiuzhou Yunjian completed a combustion-chamber test in March for the smaller 10-ton variable-thrust 'Lingyun' engine.
Jiuzhou Yunjian Space Technology Co., Ltd., founded in 2017 and headquartered in Beijing, tested the gas generator for an 80-ton-thrust (vacuum) liquid methane–liquid oxygen 'Longyun' rocket engine.
Jiuzhou Yunjian performed a successful combustion chamber test in March as part of developing a methalox engine named Lingyun.