The Long March 4 C-Yao 51 carrier rocket ignited and lifted off at Taiyuan Satellite Launch Center. Photo courtesy of photochina Aerospace Science and Technology Group
At 6: 41 on March 10, 2023, the Long March-4 C-51 carrier rocket blasted off from Taiyuan Satellite Launch Center, and successfully put Tianhui-6 A/B star into the scheduled orbit with one arrow and two stars. The launch mission was a complete success.
The Paper reporter learned from the Eighth Academy of China Aerospace Science and Technology Corporation that the Long March 4 C carrier rocket carrying out this launch mission is a three-stage liquid carrier rocket at room temperature developed by the Eighth Academy. According to different types of satellites, the Long March 4 rocket can adopt flexible launch schemes, and has the ability to launch various types of satellites with different orbital requirements. It can launch one arrow, one satellite or multiple satellites, and its solar synchronous circular orbit carrying capacity can reach 3 tons (orbital height is 700 kilometers). The satellite launched this time was developed by Dongfanghong Satellite Co., Ltd., which belongs to the Fifth Academy.
Transshipment of canopy assembly
This launch is the first launch mission in the field of transportation in the Eighth Hospital after the Spring Festival, and it is also the first flight of Chang-4 model with attitude control and full redundancy design. In order to complete the task under the current high-density launch situation with higher quality and efficiency, Chang-4 model upgraded the attitude control engine products from the aspects of manufacturability, reliability and safety, and at the same time realized the redundancy of three-channel attitude control actuators in the nonlinear section, and the reliability was further improved.
Taiyuan in March is experiencing a late spring cold, and the lowest temperature once reached -21℃. With the strong cooperation of the launch site, the model test team has done a good job in thermal insulation measures for the arrow body and staff by sealing the bottom tower, increasing the air supply temperature, and sticking thermal insulation layers on the fairing and transition cabin.
For the first time, the model characteristic logo was published on the body of this rocket. One horizontal arrow is a landmark building in Shanghai, representing the birthplace of the rocket.
It is worth mentioning that the model characteristic logo is also disclosed for the first time on the arrow body of this invention, and the Arabic numeral "4" full of design sense shows the unique imprint of this gold medal rocket. Among them, yiheng is a landmark building in Shanghai, representing the birthplace of rockets; A vertical outline of the shape of the Changsi rocket; The two are connected by a beautiful three-stage trajectory of the Changsi rocket, which represents the characteristics of the model three-stage rocket; The two stars represent the honor that Changsi model won the national special prize for scientific and technological progress twice.
This launch is the 97th launch of cz-4, the 183rd launch of the Long March series of launch vehicles developed by the Eighth Academy, and the 465th launch of the Long March series of launch vehicles.