On December 16, 2024, China successfully launched the Satellite Internet Low Earth Orbit 01 group of satellites into the scheduled orbit at the Wenchang Space Launch Site in Hainan Province using the Long March 5B carrier rocket and the upper stage of the YZ-2. The successful launch of this mission marks the phased results of China's satellite Internet constellation deployment and provides key support for the construction of the global satellite communication network. The mission also marks the successful conclusion of the launch of 45 satellites of the China Aerospace Science and Technology Corporation in 2024.
1. Technical highlights and mission details
Long March 5B Carrier Roket
Long March 5B is China's new generation of large launch vehicle, with a strong carrying capacity of 25 tons in low earth orbit, a core stage with a diameter of 5 meters and four boosters with a diameter of 3.35 meters to provide more than 1,000 tons of take-off thrust. As one of the most powerful rockets in China at present, this mission once again demonstrated its high reliability and efficiency.
Since its commissioning, the Long March 5B has successfully performed many key missions, especially in the satellite networking stage, providing strong support for the deployment of China's low-orbit satellite constellation.
TZ-2
As a hydrodynamic orbit change platform independently developed by China Aerospace Science and Technology Corporation, the upper stage of YZ-2 has strong orbit change and multi-target launch capabilities.
1. Multi-satellite delivery: It can carry multiple satellites at one time and accurately send them into different orbits, greatly improving the launch efficiency.
2. Fuel saving: Its accurate orbit adjustment ability effectively reduces the satellite's own fuel consumption and prolongs the working life of the satellite.
3. High adaptability: It is mature with the Long March 5B rocket to ensure the stability and efficiency of the launch mission.
Figure: China Satellite Internet Low Orbit 01 Satellite Group 01 was successfully launched, and 45 satellites were successfully completed
The satellite Internet low-orbit 01 group of satellites
is developed by the Fifth Academy of Aerospace Science and Technology Group, and this group of satellites adopts advanced miniaturization and modular design, and has high-performance communication functions. These low-orbit satellites will serve as an important part of China's satellite Internet constellation, comprehensively improving global communication coverage.
1. One rocket and multiple satellites: This mission carries multiple satellites, marking the beginning of the batch deployment stage of China's constellation network.
2. Target orbit: The satellite has successfully entered a low-Earth orbit of about 500 kilometers, and has the ability to transmit data quickly and with low latency.
Task execution and data
1. Rocket type: Long March 5B
2. Equipped with an upper stage: Expedition II
3. Constellation deployment: Satellite Internet Low Earth Orbit 01 Group
4. Launch time: December 16, 2024
5. Number of missions: The 552nd launch of the Long March series rockets
2. Expert Views & Technical Analysis
Zhu Haiyang: Zhu Haiyang,
senior engineer of China Aerospace Science and Technology Corporation (CASC), pointed out that the launch laid the foundation for the subsequent batch networking of low-orbit satellite constellations. In the next few years, China will continue to promote the launch and deployment of low-orbit communication satellites, and eventually achieve global Internet coverage, providing core support for telecommunications, emergency rescue, smart cities, etc.
Zhang Xinyu: Advantages of YZ-2
Zhang Xinyu emphasized that the upper stage of Yuanzheng-2 has a strong orbit change ability, which can carry multiple satellites and complete multi-target launch in the same mission. This not only reduces the cost of the mission, but also shortens the time for the satellite to be put into orbit, enabling the satellite to carry out data transmission and other work faster.
Global competition and China's strategic position
With the advancement of projects such as Starlink in the United States, the global satellite Internet has become the focus of a new round of technological competition. China's successful deployment of low-orbit 01 satellites through this mission demonstrates its strong competitiveness in the field of global satellite Internet. This achievement will also help China occupy a more important position in the future space economy.
3. Application prospect and strategic significance
The advantages of the low-orbit satellite Internet constellation of global communication services lie in wide coverage and low communication delay, especially suitable for remote areas, oceans, deserts and other areas that are difficult to be covered by terrestrial networks. The successful launch of the satellite will provide efficient and low-latency broadband communication services around the world, and promote the popularization of information technology around the world.
National Strategy & Emergency Telecommunications
1. National security: LEO satellite communications can be used as a backup to the terrestrial network to ensure smooth communication at critical moments.
2. Emergency rescue: In emergencies such as natural disasters, satellite communication can quickly provide network support to ensure rescue command and information transmission.
Satellite Internet for commercial and industrial applications
will provide a solid communication foundation for the Internet of Things, smart agriculture, intelligent manufacturing and other fields. The launch will further promote the independent R&D and production capacity of Chinese enterprises in the industrial chain links such as satellite communications and terminal equipment, and provide more high-performance solutions for domestic and foreign markets.
4. Concrete figures and achievements
Figure: Specific data and achievements of this launch mission
5. Conclusion
The successful launch of the low-orbit 01 group of satellites of China Satellite Internet is another milestone achievement in China's space industry. This not only enhances China's position in the global satellite communication network, but also demonstrates China's advanced level in the field of launch vehicles, upper stage and low-orbit satellite technology. With the further deployment of satellite constellations, China is expected to provide more efficient and stable communication services for users around the world.
In the future, with the continuous progress of technology and the continuous expansion of applications, China's satellite Internet will become an important support for the global digital economy, helping mankind move towards a more intelligent and interconnected future.
