On July 12, Zhuque-2 Yao-2 carrier rocket was successfully launched at Jiuquan Satellite Launch Center, becoming the first liquid oxygen methane rocket successfully put into orbit in the world. In this task, the rocket intelligent "steering wheel" is from the high-power electric Thrust vectoring servo system developed by the 33 Institute of the Third Academy of Aerospace Science and Industry of China. The development of this key equipment has lasted five years. As the core component for adjusting the rocket attitude, the servo system is arranged in the rocket engine compartment, responsible for receiving control commands, pushing and pulling the rocket engine to generate corresponding angle changes, and achieving precise control of the rocket attitude. Its reliability and performance are directly related to whether the rocket can accurately send the satellite into the predetermined orbit. The launch site of the Zhuque 2 Yao 2 carrier rocket. The Zhuque II carrier rocket provided by LandSpace is a dual cryogenic liquid oxygen methane carrier rocket independently developed by LandSpace Technology Co., Ltd. and has independent intellectual property rights. It has strict requirements on the low cost and high performance of the servo system. Dr. Huang Jian, Technical Director of the Servo System at Institute 33 of the Third Academy of Aerospace Science and Technology of China, stated that the research and development team has devoted 5 years to developing this intelligent product. Firstly, it is high precision, which means it can accurately execute the given actuation instructions of the system, with an error of only five thousandths. Secondly, it is high dynamic, which not only needs to be executed accurately, but also needs to be executed quickly enough, with the instructions and execution being exactly the same in frequency. Thirdly, it is high power to weight ratio, which means that although the size is small and exquisite, it can burst out powerful energy. Finally, it is strong anti-interference, facing the strong impact generated during flight And various complex disturbances outside the system, still maintaining a stable working state Huang Jian said. Little known is that the success of these achievements allowed the R&D team to deeply experience the hardships of the pioneers, reaching the brink of collapse at one point. At the beginning of the 2019 project, the mainstream electric servo system in China had a capacity of only 10 kilowatts, while the required power for rockets was 30 kilowatts. This 300% capacity leap was achieved, leaving only 4 months for the manufacturing team. Huang Jian and his colleagues clearly remember that it took them three years to set the product power at 5 to 10 kilowatts. Commercial aerospace is a vast expanse of space, with seemingly unattainable cliffs adorned with endless scenery that has never been appreciated before. At first, they were greeted by burnt circuit boards, smoking capacitors, and interference signals that could not be eliminated from the spectrum... Repeated failures were impacting their almost shattered willpower. In their laboratory, young people born in the 1990s are not qualified to show off their gray hair. Ten consecutive days and nights of "closed door cultivation" are not considered boastful capital. They persevere in desperate situations and strive to use scientific spirit and innovative thinking to forge ahead. Huang Jian told the reporter that the team has established an accurate mathematical model for each component of the system, and used dynamics, Kinematics and multidisciplinary simulation platforms to carry out analysis, from which weak points were found and constantly improved. Gradually, they found the right path to solve the problem, and the new servo configuration was constantly improved through iteration. The team was also released from a state of oppression, and various professions were advancing separately. Originally
Edit：XiaoWanNing Responsible editor：YingLing
Source：China Youth News
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