Beijing Zhongke Aerospace Exploration Technology Co., Ltd. is the first domestic aerospace enterprise with mixed ownership, and it is also the target enterprise that Oriental Aerospace Port focuses on introducing. Relying on the scientific research strength and resource advantages of the Institute of Mechanics of the Chinese Academy of Sciences and the Aerospace Flight Technology Center of the Chinese Academy of Sciences, China Aerospace Science and Technology has been committed to the research and development and integration of space technology and aerospace vehicles as a platform for the transformation of major national scientific research projects, as well as the transformation and provision of technological achievements. Aerospace launch service. The Lijian-1 rocket project also adds a brand-new name card to the Oriental Space Port, which will surely promote the construction of the Oriental Space Port to take a solid step forward.
The Lijian-1 Y11 carrier rocket has completed its final assembly and testing as planned at the CAS Space Industrialization Base and successfully passed the factory acceptance review. It is scheduled to launch nine satellites in one launch from the Jiuquan Dongfeng Commercial Aerospace Innovation Test Zone in the near future.
The Lijian-1 is a four-stage solid-propellant launch vehicle developed by the Institute of Mechanics of the Chinese Academy of Sciences and with the participation of China Aerospace Science and Technology Corporation. It uses a solid-fuel engine, has a takeoff weight of 135 tons, a takeoff thrust of 200 tons, a total length of 30 meters, a core stage diameter of 2.65 meters, and a payload capacity of 1,500 kg to a 500 km sun-synchronous orbit . It features rapid launch and low-cost networking capabilities. [The rocket has made breakthroughs in several key technologies, including overall optimization design of large-tonnage solid launch vehicles, advanced power systems and thrust vector control, centralized-distributed modern aerospace electronics technology, low-cost rocket body structure and separation technology, intelligent flight control technology, ground use and hot launch technology of large-tonnage solid rockets. The number of products on the rocket is reduced by 50% compared with traditional rockets, and the ground launch process only requires two computers to complete the automated control
System Composition
Overall Design
The “Lijian-1” carrier rocket is the largest solid-propellant carrier rocket in China in terms of launch capacity. It features flexible and rapid launch methods and is mainly used for single and multiple satellite launches of small and medium-sized spacecraft into sun-synchronous orbit and other low-Earth orbits.
The “Lijian-1” carrier rocket has a series of outstanding advantages, such as large carrying capacity, high orbital accuracy, high inherent reliability, fast response speed, high launch efficiency, low support requirements, low launch cost, flexible and convenient use, and good environmental adaptability. It is suitable for low-cost and rapid networking launch of medium/low orbit satellite payloads.
The Lijian-1 rocket has a lift-off thrust of 200 tons and its main function is to launch satellites into sun-synchronous orbit and low Earth orbit . It is a four-stage solid-propellant launch vehicle that has entered the ranks of the world’s advanced solid-propellant launch vehicles in terms of payload capacity, orbital accuracy, design reliability, and cost-effectiveness.
It boasts six key technologies, 13 of which are being used for the first time in China. The first-stage engine has a propellant load of 71 tons and a thrust of 200 tons. This is the first time such a large, integrally packed propellant charge (weighing 70 kg) has been used. The entire combustion chamber is constructed from T700 carbon fibre . It exhibits strong rapid response capabilities, employing a “three-horizontal-one-vertical” assembly and transport method, ensuring the entire rocket is transported horizontally. It has minimal reliance on the launch tower, allowing for launch within hours in emergency situations. In terms of advancement, it is fully comparable to mainstream international solid-propellant rockets.
Low-cost and flexible launch is suitable for rapid satellite networking. Among the various innovative technologies, the integrated onboard avionics design and new ground-based telemetry and control method adopted by the Lijian-1 rocket can significantly reduce launch costs and simplify the launch process, making it very suitable for low-cost and rapid networking launch of small and medium-sized satellite payloads in low and medium orbits.
Design parameters
The Lijian-1 launch vehicle is a four-stage solid-propellant launch vehicle with a takeoff weight of 135 tons, a takeoff thrust of 200 tons, a total length of 30 meters, a core stage diameter of 2.65 meters, a fairing diameter of 2.65 meters in its first flight state, and a payload capacity of 1500 kg to a 500 km sun-synchronous orbit
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