CZ-4B was launched at Taiyuan Satellite Launch Center on July 25, 2020, and succeeded in sending ZY-3-03 to the preset orbit, and launching its on-board Lobster-eye X-ray Exploration Satellite and Tianqi Constellation-10, achieving a huge success

CZ-4B executing this launch mission is the Grade III normal-temperature liquid carrier rocket developed by Shanghai Academy of Spaceflight Technology as the coordinator, andis equipped with the capacity to launch various satellites, single satellite and multiple satellites in accordance with different orbit requirements, and its carrying capacity in sun-synchronous circular orbit can reach 2.5 tons (orbit height: 700km)

This is thesecond successive launch of CZ-4Bin a month, and release is granted by quality assurance system in place of the review meeting in the filling phase, and then jointly promoted and executed by the model and launching site. Quality assurance links are set based on time, classification and system in combination with the model launching site procedures, characteristics and technical risks of the mission, and then integrated with “technology, production assurance and plan” procedures at the launching site, to decompose necessary and sufficient conditions supporting the release criteria before filling into 32 quality assurance items, which shall be supported by corresponding site checklist, audited and confirmed as per procedures in time, and finally form conclusions meeting the release criteria before filling. The quality assurance system applied at the launching site hasimproved quality management efficiency, and fulfilled responsibilities effectively, stressed the importance to realize working objectives and make confirmation in time, and promote quality management to convert from post hoc summary to in-process control.

The launched ZY3-03 is developed by China Academy of Space Technology as the coordinator, and is mainly used to carry out land resource investigation and monitoring, etc. ZY3-03 will realize networked operation with 01, 02 and GF-7, to provide stable satellite data sources for surveying and mapping business in China.

This launch carried the Lobster-eye X-ray Exploration Satellite and Tianqi Constellation-10 developed by Shanghai ASES Spaceflight Technology Co., Ltd. as the coordinator, the wholly-owned subsidiary of Shanghai Academy of Spaceflight Technology.

As the world’s first exploration satellite of space science that applies new lobster-eye bionics techniques,Lobster-eye X-ray Exploration Satellite is designed to verify ultra-field focus imaging technologies, and further detect dark matter signals in X-ray energy sections during in-orbit operation, creating an innovative approach to carrying out space scientific research by low-cost micro-nano satellites, with huge significance to boost the space science development in colleges.

Based on the platform load integrated design idea, Tianqi Constellation-10 carries multi-band IOT load system,and will be engaged in the on-orbit verification of key space-based IOT technologies, and provide advanced technical verification for the construction and application of narrow space-based IOT constellation. The low-orbit IOT constellation formed by several low-orbit satellites will realize global seamless coverage, and become an effective approach to solving insufficient coverage capacity of ground IOT in marine, mountain areas, deserts, etc.

This is the 341^st launch of Long March Series Launch Vehicle, and also the 119^th flying test of Long March Series Launch Vehicle developed by Shanghai Academy of Spaceflight Technology as the coordinator.