Tiantong No.1 02 was successfully launched. What are the characteristics of this satellite compared with the last one?

Tiantong-1 02 successfully launched? China successfully put Tiantong-1 02 into the scheduled orbit by Long March 3B in xichang satellite launch center. ?

This satellite was developed by China Academy of Space Technology under China Aerospace Science and Technology Corporation. The key technologies have independent intellectual property rights, and provide full-time and stable mobile communication services, including voice calls, short messages and data services, to users in China and its surrounding areas and most parts of the Pacific Ocean and Indian Ocean. This satellite optimizes the satellite platform and load according to the use requirements, enhances the flexibility, improves the utilization rate of resources, and realizes the technical breakthrough of integrated management of satellite-ground resources and multi-satellite joint control.

After the successful launch of Tiantong-1 02 satellite, Tiantong-1 0 1, which has been running stably for 4 years, and subsequent satellites will form the Asia-Pacific regional satellite mobile communication system. Taking advantage of the wide coverage of satellite communication and supplementing the ground mobile communication, this communication system will also serve as the basic network core of China's emergency satellite communication and improve China's ability to deal with emergencies.

The successful launch of this satellite is inseparable from the conscientious scientists behind it. On the penultimate day before the satellite launch 1 1, the cryogenic power director heard an abnormal sound after the test equipment was running. After supplementary testing, it was found that the place where the air leakage occurred was the hydrogen vent. He quickly reported to the launch site command, and the command immediately made a judgment. By analyzing the data, it was proved that the equipment was unreliable, and the valve was replaced overnight, which solved the quality problem of the equipment. Later, when this process was continued, an unexpected situation appeared: the leakage rate of the pressure measuring check valve of No.3 supercharger was too large. This problem is very serious. If this happens again before launch, the connector will fall off, causing fuel to overflow, which may lead to explosion in case of sparks, and the operator may be poisoned by inhaling unsymmetrical dimethylhydrazine. After discussion, the headquarters decided to strictly check, replace the seven-tube connector socket, do the relevant tests, and efficiently complete the secondary insulation disposal, electrical test verification and accuracy test of the satellite power controller to ensure that the products on the rocket are in good condition and eliminate many hidden dangers. This meticulous spirit and efficient cooperation with scientists and headquarters enabled the satellite to be successfully launched. ?