A few days ago, the Long March II carrier rocket was successfully launched, which also means that Taiyuan Satellite Launch Center successfully completed the 100 space launch mission. During this meaningful journey, the small satellite APSCO-SSS -2A (SJTU Siyuan-1) independently developed by Shanghai Jiaotong University was successfully launched into orbit at Taiyuan Satellite Launch Center.
Shanghai jiaotong university's first student satellite
SSS-2A, with folding solar wings, weighs only 3.7 kg, and 80% of the single machine is independently developed by students. The whole satellite design broke through the energy limitation of cubic satellite, and the reliability of satellite was significantly improved. It can not only automatically identify the information of surface ships in space, but also verify the new technology of inter-satellite self-organizing communication in space.
Satellite telemetry data show that after the separation of the satellite and the arrow, the satellite ultraviolet antenna, AIS antenna and solar array are deployed smoothly according to the established program control program. The satellite completes the satellite velocity damping in a short time and turns to the sun orientation mode. At present, the satellite flight is normal, the whole satellite voltage is normal, the attitude is stable, and all functions work stably and normally. Subsequently, the SSS-2A satellite team will continue to carry out on-orbit tests to ensure the stable operation of the satellite.
SSS-2A was developed by the team of Intelligent Satellite Technology Center, School of Aeronautics and Astronautics, Shanghai Jiaotong University. Led by Professor Wu, an academician of the International Academy of Astronautics, the center mainly studies intelligent satellite technology and on-orbit mission planning of large constellations. The core personnel of the team have participated in the research and development of the first batch of cube satellite networking tasks STU-2 cube test satellite, China's first software-defined satellite SDS- 1 satellite and XXX small satellite. At the same time, in terms of basic pre-research, the project team has undertaken a number of projects, such as civil aviation and aerospace, military port 863, final assembly pre-research fund, national major projects, Shanghai Aerospace Fund and so on. He has accumulated a good scientific research foundation in many related research directions and published more than 100 high-level papers.
SSS-2A satellite is equipped with on-board AIS receiver and inter-satellite communication module, which realizes the information collection of surface ships and the verification of new inter-satellite self-organizing communication technology, and expands the on-orbit application of nano-satellites. At the same time, the satellite is equipped with MEMS air conditioner micro-thruster and double folding deployable solar panels independently developed by Shanghai Jiaotong University, which breaks through the energy limitation of cubic stars, improves the on-orbit maneuverability and expands the on-orbit application scenarios. In terms of reliability, the dual-backup satellite computer, dual-backup measurement and control stand-alone computer, specially designed attitude control computer, redundant interface design, hardware design for expanding energy, and intelligent algorithm software developed in the laboratory are adopted, which significantly improves CubeStar's on-orbit autonomous decision-making and on-orbit fault diagnosis capabilities.
As the first student satellite of Jiaotong University, nearly 20 students participated in the satellite development. The average age of these young astronauts is only 24. They tackle key problems step by step and run through the whole cycle of satellite development, from satellite overall design and index decomposition to satellite product development, single-machine test and verification, satellite integration and environmental experiment verification. Every iteration of a printed circuit board (PCB), every adjustment of satellite structure and every elimination of software bugs, they strive for perfection. In the end, this student satellite, with a self-research rate of 80%, successfully completed research and development and passed the acceptance.
Huang Yixin, the head of the student team's integrated electronic system and a doctoral student majoring in aerospace science and technology at Jiaotong University, said: "It is a great achievement to design and manufacture a satellite in the student days! The biggest difficulty in this process is not to be the satellite itself, but to always maintain an attitude of Excellence-knocking on every line of code, installing every device, and even screwing every screw requires full attention, because details determine success or failure. " As the head of the ground station, Jiang Yifei, a doctoral student, monitored the first signal of satellite orbit in Kashgar, Xinjiang. This launch mission, as the student leader of the communication subsystem and geodetic subsystem, he needs a person to be stationed at the monitoring station in Xinjiang.
Caption: Jiang Yifei stands alone at a monitoring station in Xinjiang.
"I feel that the biggest difficulty here is loneliness. One person faces the endless Gobi Desert, one person operates complex instruments, and one person solves all the difficulties encountered in the work process. But scientific research is lonely, and this loneliness has brought me more expectations. When I saw the satellite signal captured by the instrument, I felt that the universe was talking to me, and all these efforts and efforts were rewarded. "
Practice and educate people to inherit the space spirit.
"The sky is a bed, a tent is set up in Anjiashan gully, three stones are used to make a pot, and potatoes and cabbage are used as dry food." The jingle circulating in Crane describes the scene of the older generation of space entrepreneurs fighting against the sky. After more than 50 years' efforts, Taiyuan Satellite Launch Center has finally achieved today's achievements. Teacher Zhu Xinyuan, member of the Standing Committee of the Party Committee and Vice President of Shanghai Jiaotong University, came to Taiyuan Satellite Launch Center to observe the satellite launch with the satellite development team and the teachers and students of the social practice group of "Flying after Dreams, Serving the Country" and get a close look at the great achievements made by China's space industry.
Cultivating people with aerospace spirit has always been a fine tradition of Jiaotong University. The school has organized many educational practice groups for the industry of "Realizing Dreams for Aerospace", with students from the Institute of Aeronautics and Astronautics as the main body, and went to Wenchang, Xichang, Jiuquan and other places to carry out practice. More than 0/00 students from Jiaotong University/KLOC witnessed the rocket breaking through the sky and successfully taking off on the first line of satellite launch. Previously, the social practice group of "Dreaming for Space" went to observe the launch of Beidou navigation satellite, Long March 5, Tianwen No.1 Mars probe, Chang 'e No.5 lunar probe, Tianhe core module of China Space Station and Shenzhou 12 manned spacecraft. Carry out "great ideological and political course" in the front line of the industry, and take "aerospace spirit" and "aerospace culture" as ideological and political education to cultivate new people. Through long-term institutionalized practice, we will constantly establish the lofty ideal of students serving the country in space and cultivate the feelings of industry serving the country.