Kyushu Yunjian | Longyun Engine Reliability Test Exceeds 10,000 Seconds!
Release Time:
2023-11-29
As of now, the Longyun engine has completed more than 120 start-up tests, with reliability testing time exceeding 10,000 seconds!
Recently, Longyun Engine successfully completed the reliability verification test and evaluation!
As of now, the Longyun engine has completed over 120 start-up tests, with reliability testing time exceeding 10,000 seconds. Specifically, a single engine has achieved continuous operation for up to 3,700 seconds and undergone a maximum of 30 start-up cycles. Comprehensive assessments have been conducted on key features related to the engine's reusability, including wide-range thrust modulation (from 100% to 32%), three consecutive start-ups, simplified operational maintenance procedures, and reliable ignition under low-inlet-condition scenarios. Based on overall reliability requirements, the engine has successfully completed evaluations covering projects such as supercooled propellant handling, pump cavitation resistance, thermal sway tests, off-design condition operations, and mission profile simulations.
▲ Engine 10,000-Second Test Drive Compilation
Recent News
On May 29, 2025, at 4:40 a.m., the Longyun liquid oxygen-methane engine developed by Kyushu Cloud Arrow successfully completed its sea-state flight recovery test at the Dongfang Spaceport in Haiyang, Shandong. The test achieved complete success!
2025-06-17
Jiuzhou Yunjian | Longyun Vacuum Version Successfully Completes Series of Hot Tests!
Recently, the Longyun Engine Vacuum Version successfully passed a series of hot testing assessments!
2025-06-17
At 9:30 a.m. on April 30, Anhui Province held a grand ceremony in Hefei to celebrate the "May Day" holiday and honor recipients of the Provincial May Day Labor Awards and Worker Pioneer Titles, presenting medals and certificates of honor to the distinguished individuals and teams. Comrades Huang Shiqi and Hu Zhiqiang from Jiuzhou Yunjian were awarded the "Anhui Provincial May Day Labor Medal."
2025-06-17
The Longyun Engine Vacuum Version (LY-70V) has successfully completed a cumulative thermal test run lasting over 1,000 seconds, marking a complete success for the series of test trials!
2025-03-27
After evaluation by the Leading Group for the Bengbu Dayu Talent Selection Program, Huang Shiqi, Co-founder of Jiuzhou Yunjian, has been honored with the title of "Dayu Talent" Innovation Leader in the third batch of Bengbu City's talent program!
2025-03-27
Jiuzhou Yunjian | Debuts at the 15th Zhuhai Airshow!
On November 17, the 15th China International Aviation & Aerospace Exhibition (hereinafter referred to as "Airshow") successfully concluded in Zhuhai. During the event, Kyushu Cloud Arrow showcased its Longyun engine, highlighting its innovative propulsion system for commercial aerospace applications.
2024-12-05
Jiuzhou Yunjian (Beijing) Space Technology Co., Ltd. is a national high-tech enterprise integrating liquid rocket engine design and development, assembly and testing, as well as comprehensive end-to-end flight support services.
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