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2025-08-04

Jiuzhou Yunjian | The sea splashdown recovery engine successfully completed its hot swing test.

This test marks the first domestic instance of re-igniting a sea-state recovery engine, demonstrating the Longyun engine’s adaptability to offshore splashdown and laying an important foundation for exploring new pathways in rocket recovery and reuse technology.

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2025-06-17

Up to the Sky and Down to the Sea | Longyun Engine Successfully Completes Sea-State Flight Recovery Test!

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!

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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!

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Jiuzhou Yunjian | Longyun Engine Vacuum Version Successfully Completes Long-Duration Thermal Testing and Evaluation

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

Jiuzhou Yunjian | Longyun Engine Completes Flight Profile Calibration Hot Test Run

Recently, Longyun Engine has successfully completed the flight profile calibration hot test run and is now ready for delivery to customers.

2024/03

Kyushu Yunjian | Longyun Engine Reliability Test Exceeds 10,000 Seconds!

As of now, the Longyun engine has completed more than 120 start-up tests, with reliability testing time exceeding 10,000 seconds!

2023/11

Kyushu Yunjian | Longyun Engine's First Round Reliability Hot Test Evaluation Successfully Concludes

Recently, the Longyun engine successfully completed its first round of reliability hot testing and evaluation. Currently, the cumulative test duration has exceeded 7,000 seconds.

2023/07

Kyushu Yunjian | Longyun Engine Successfully Completes Post-Heating Swing Test of High-Pressure Pump

Recently, the 70-ton-class "Longyun" engine developed by Jiuzhou Yunjian successfully completed two rounds of joint thermal swing tests involving both the engine and its servo mechanism at the Bengbu Power Test Center.

2023/04

Kyushu Yunjian | Stainless Steel + Liquid Oxygen-Methane Successfully Achieved!

The Kyushu Yunjian LY-70 Longyun engine has successfully completed its power system hot-fire test. This milestone marks a significant advancement in the application of the Longyun engine to Shangjian, following successful assessments such as thrust enhancement and reliability testing!

2023/04

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.

Contact Information

Phone:

086 10-67948968/9

zhaopin@jzyjspace.com

2nd Floor, Building 32, No. 109 Jinghai 3rd Road, Beijing Economic-Technological Development Area

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