Shulou(Shulou.com)11/24 Report--

CTOnews.com, July 26, 2023, 10:50, China used the long March 2d carrier rocket from the Taiyuan Satellite launch Center and successfully launched four satellites, namely, the four elephants 01303 and the Galactic Space Spacer 03. The satellite entered the scheduled orbit smoothly, and the launch mission was a complete success.

According to the Galaxy Aerospace official, the Galaxy Aerospace Galaxy 03 satellite is independently developed by the Galaxy Aerospace Company, and the satellite is equipped with a millimeter wave beam digital load with a capacity of tens of gigabits per second. It is used to verify the next generation Leo broadband satellite communication and technologies such as super-large energy, active thermal control, industrial integrated molding structure, multi-star stack compression and release, and so on. This is also the first time that China has verified the multi-satellite stack launch technology in orbit. It will provide technical support for the rapid deployment of giant low-orbit communication constellations in China.

▲ Galactic Space Telescope 03 star stack compaction state, Tuyuan Galaxy Aerospace official is worth paying attention to is that this satellite is the first satellite in China to use flexible solar wings. " The flexible wing is very thin, and the thickness of the single-layer flexible solar panel is only about 1 mm. It can be folded like an ancient "playbook". When installed in a rocket, it is folded, with a main body thickness of less than 5 cm; when working in orbit, the "wing" is about 9 meters long and more than 2.5 meters wide.

Galaxy Aerospace said that this "flexible wing" has the characteristics of small envelope, light weight, and modularization, which is easier to receive, has a larger area under the same mass, can absorb more solar energy, and is suitable for large-scale satellite stacking and launching. it is of great significance to accelerate the construction of satellite Internet.

▲ Galaxy Space Telescope 03 star flexible solar wing deployment state, it is understood that the main function of this satellite is low-orbit broadband communications, the "digital payload" of the satellite can be understood as the installation of an intelligent "brain" by the satellite, which enables the satellite to flexibly deploy its own communication resources and automatically carry out calculations and beam deployment according to business needs.

From the point of view of the shape, the configuration of the satellite is like the chassis of the car, and it is also the first satellite with integrated satellite main structure in China, which adopts integral casting technology, which makes it easier for follow-up mass production. The satellite adopts an open structure, and the stand-alone equipment is directly exposed to the space environment without a "shell" package, which has higher requirements for space environment protection and temperature control of satellite electronic products.

Therefore, the satellite is equipped with an active thermal control fluid loop, which is equivalent to an "air conditioner" for the satellite to actively adjust and make it work at a comfortable temperature. According to the external thermal environment perceived by the satellite in orbit, and combined with its own temperature state, the liquid flow in the pipeline is driven by the circulating pump to maintain the temperature stability of the single machine.

Zhu Zhengxian, chief technology officer of Galaxy Aerospace, said that the follow-up company will accelerate the batch development of stackable flat-panel satellites, tackle core technologies such as phased array antennas for mobile phone directly connected satellites, on-board big energy, and digital processing payloads, and join hands in the upstream and downstream of the industrial chain. accelerate the construction of satellite Internet.

CTOnews.com learned from the Galaxy Aerospace website that Galaxy Aerospace, a satellite Internet solution provider and satellite manufacturer, is the first unicorn company in China's commercial aerospace field. The company is committed to independent research and development of communication payload, core stand-alone and satellite platform and low-cost mass production, building supporting research and development capabilities of communication payload, core stand-alone and solar wings in Xi'an, Chengdu and Beijing respectively, and building a new generation of intelligent satellite manufacturing plant in Nantong, which has realized the mass production capacity of 100 satellites.

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