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Thrust adjustment system media test, nozzle passed the suppression test

  • Categories:News Center
  • Time of issue:2020-07-07 14:43

(Summary description)In March 2019, Kyushu Yunjian ①The thrust adjustment system completed the medium test assessment, ②The thrust chamber nozzle passed the suppression test assessment, and the development of Lingyun engine took another solid step.

Thrust adjustment system media test, nozzle passed the suppression test

(Summary description)In March 2019, Kyushu Yunjian ①The thrust adjustment system completed the medium test assessment, ②The thrust chamber nozzle passed the suppression test assessment, and the development of Lingyun engine took another solid step.

  • Categories:News Center
  • Time of issue:2020-07-07 14:43
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In March 2019, Kyushu Yunjian ①The thrust adjustment system completed the medium test assessment, ②The thrust chamber nozzle passed the suppression test assessment, and the development of Lingyun engine took another solid step.
A major prerequisite for liquid rocket engines to be suitable for use in the commercial aerospace market is to have recycling and reuse capabilities. Through recycling and reuse, the launch cost can be reduced step by step, so that commercial applications can be gradually realized. At the beginning of the design of Lingyun engine, it aimed at the commercial aerospace demand of recyclable and reusable. After full demonstration, the thrust adjustment range of Lingyun engine was determined to be 30%~100%. The key to achieve large-scale adjustment of thrust is the thrust control valve system. Through the stepless adjustment of valve opening, the medium flow control of the engine is realized, so that the engine can change the thrust arbitrarily within the range of 30% to 100% to achieve the rocket's Recycling, it can be said that the thrust regulating valve and regulating technology of the pumped liquid rocket engine is definitely a black technology.

This test evaluated the control characteristics, flow characteristics and control logic of the thrust control valve, and fully verified the rationality of the design scheme, the adaptability of the variable thrust control logic, and the matching of the controller measurement acquisition system Sex. The thrust adjustment system successfully passed the medium test assessment, marking that Kyushu Yunjian has independently broken through another key link in the engine thrust depth adjustment. In the follow-up, the thrust adjustment control logic will be continuously optimized and improved, and the reliability of the thrust adjustment system will continue to be assessed by means of hardware-in-the-loop simulation, medium test, etc., in order to minimize the potential technical risks brought by the variable thrust system to the engine.

Medium test pressure closed loop adjustment curve
The function of the liquid rocket engine nozzle is to expel the high-temperature and high-pressure gas after expansion and acceleration, thereby generating a reaction force, which is the last link of the engine to generate thrust. In order to reduce the manufacturing dif