On November 9th, the Lijian-1 Yao-9 carrier rocket was launched into space from the Dongfeng Commercial Aerospace Innovation Test Zone, successfully sending the Chutian-2 Technology Test 01 and 02 satellites into their designated orbits. The flight test mission was a complete success. As of now, the Lijian-1 carrier rocket has successfully launched 75 satellites into space, with a total payload mass exceeding 10 tons. Shi Xiaoning, the chief designer of Lijian-1, introduced that Lijian-1 is mainly aimed at the small and medium-sized satellite launch market, covering a carrying capacity of 1.5 to 2 tons in low orbit through carpooling launch. The rocket mainly improves cost-effectiveness and flight reliability through highly integrated design and fast and agile usage mode. For satellite launch missions with a total payload of less than 2 tons per launch, the price per kilogram can be reduced to less than $10000. In this mission, the development team of Lijian-1 adopted a new approach to improving reliability, such as utilizing a large amount of testing and flight data from previous launches to form a product data envelope, and conducting envelope analysis to promptly detect anomalies in product production and testing data. ”Shi Xiaoning said. Hu Xiaowei, the commander-in-chief of Lijian-1, stated that in the initial design stage, the Lijian-1 carrier rocket adopted a de tasking design, and the entire rocket development was also a universal, serialized, and combined mode, which efficiently connected the entire process of rocket production, testing, and launch, achieving mass production of rockets, standardization of testing processes, and flight based launch services. Currently, with the continuous increase in launch mission density, the maintenance cycle of the ground launch support system equipment of the Lijian-1 carrier rocket is also constantly shortening, and rapid recovery has been achieved to ensure efficient progress of various tasks. ”Hu Xiaowei said. Sun Liangjie, the deputy chief designer of Lijian-1, introduced that in order to avoid the generation of space debris in this orbit and the long-term impact on satellite safety, Lijian-1 carrier rocket innovatively adopts an open lid separation scheme. After the separation of the first satellite, the front module rotates and opens, and after a period of time, it is locked in place. After the attitude stabilizes, the separation of the second satellite is carried out, and the final stage is timely deorbited according to the prescribed timing. The development team conducted multiple experimental assessments and verifications on this structural form to ensure the safety and reliability of separation and locking. (New Society)