Xichang, 5 May (Zhongxin Net) -- On 17 May, the 5th satellite of the Beidou Satellite Navigation System was successfully launched at the Xichang Satellite Launch Center. The reporter learned that when the satellite arrived in Xichang from Beijing, it was transported to Xichang for the first time using a domestically produced Y-17 aircraft for whole satellite transportation.
At 5:17 on May 10, China successfully launched the 49th Beidou navigation satellite with the Long March-<>B carrier rocket at the Xichang Satellite Launch Center. Photo by Zhu Lei
The Beidou satellite launched this time is a GEO satellite (geostationary orbit satellite), which will be stationed in space 36000,<> kilometers above the earth, undertaking the important mission of providing enhanced services for the technical indicators of the Beidou global navigation system, and is affectionately known as "Jixing".
On April 4, the satellite arrived in Xichang from Beijing after completing its work in Beijing Aerospace City. This is also the first time that the Beidou-2 satellite has used a domestically produced Y-20 aircraft for whole satellite transportation.
At 5:17 on May 10, China successfully launched the 49th Beidou navigation satellite with the Long March-<>B carrier rocket at the Xichang Satellite Launch Center. Photo by Yang Zhiyuan
In view of the characteristics of the internal space of the Y-20 aircraft, the General Assembly and Environmental Engineering Department of the Fifth Academy of China Aerospace Science and Technology Corporation designed a new whole star packaging box with vibration damping outside the box, which can maximize the use of the internal space of the domestic aircraft. In addition to transporting the Beidou-<> satellite, the box also integrates the air freight needs of other types of satellites.
In view of this transportation work, the development team has successively overcome the difficulties of transportation fixation and high risk in the process of loading aircraft, and successfully completed the transportation assembly work. Compared with renting foreign transport aircraft, the use of domestically produced Y-20 aircraft for transportation improves the independent controllability of China's whole star transportation link and saves considerable transportation costs.
In addition, the R&D team also actively adopts automation means to apply a large number of intelligent equipment to the final assembly of this satellite, using science and technology to achieve human-machine collaboration and promote the efficient operation of the development process.
The staff said that the robot cabin panel opening and closing system with independent intellectual property rights integrates many "black technologies" in many applications of intelligent equipment. Among them, flexible force control, human-machine collaborative conversion and other technologies have applied a large number of patents and technical know-how; The on-site application effect is obvious, and the manual needs to spend 2 hours of cabin panel work, and it can be accurately completed within 30 minutes after using the robot. The application of self-developed flexible force control and other technologies overcomes the problems of unstable operation and excessive reliance on personnel experience in the process of opening and closing the cabin plate, and improves the quality of satellite docking and assembly.
The satellite automatic attitude adjustment system greatly improves the automation level of precise adjustment of posture in large-scale component installation, module precision docking, solar wing docking deployment test, antenna docking deployment test and other projects. The system is installed on the satellite turntable, which can realize the precise adjustment of the attitude of the satellite in 6 degrees of freedom in any attitude, and meet the automatic conversion of satellites between different attitudes. After using the system, the satellite solar wing installation has been reduced from the original 5 to 1 person to operate, and the satellite attitude adjustment time has been reduced from 2 hours to 15 minutes, which greatly improves the final assembly efficiency. (End)