my country's new generation manned rocket completes important tests to the initial development stage

The reporter learned from the First House of China Aerospace Science and Technology Group on the 28th that the 702 of the hospital's 702 has successfully completed the new generation of manned carrier -carrier rockets and the joint test of the new generation of manned carrier -carried carrier rockets, which strongly supports the smooth transfer of the rocket development to the initial development stage.

This experiment is an important test to verify the new generation of manned carrier rocket multi -machine parallel and key technologies for the bottom of the box. It is an iconic work that has been transferred to the initial development stage. Wang Xiaohui, director of 702, said that the successful completion of the test marks the first time that my country breaks through the large -load static joint test technology. It is an important innovation of testing methods and testing capabilities. A solid foundation.

"This is the largest scale, the highest technical difficulty, and the most complicated test process in the field of mechanical experiments in my country." Zhu Xiquan, deputy chief designer of 702, introduced that the test needs to break through the static thrust of multiple engines under actual flight conditions under actual flight conditions. Combined with the vibration load, involving key test technologies such as vibration elastic boundary simulation, nearly 1,000 tons of static load loading, multi -dimensional vibration control and loading under the static load.

The new generation of manned carrier rocket basic -level module is 5 meters in diameter and installed multiple 120 tons engines. Zhu Xiquan said that the multi -machine parallel technology of the large thrust engine is the first time that my country's carrier rockets have been adopted, bringing the static and dynamic coupling effects of complex structures and nonlinear transmission problems under the action of joint load. One of the key technologies for deepening research. In order to analyze and solve this problem and verify the effectiveness of the design scheme, the technical team design implemented the first multi -machine parallel and joint test of my country.

Since 2019, 702 have demonstrated the test technology solution with relevant units. Based on the scheme, the team has successively broke through the key technologies required by the test. This year, it developed a static load of 28 sets of 50 -ton oil and gas support system, multiple sets of 20 -ton sensing vibration tables, and 1000 -ton vibration elastic boundary system. Joint loading test system.

Hou Jingfeng, the person in charge of the test system design, introduced that the four oil and gas support systems and a inductive vibration platform constitute a set of static joint incentive systems that can simulate the engine's incentive for the rocket structure. Multiple sets of systems can simulate the incentive load of multiple engines to the Rockets. The test system constitutes complex and involves multiple sub -systems. The team integrates the intellectual research, and iterates the design of the scheme and the principles of sub -systems, overcome a number of key technologies, and turns complex technical solutions into engineering reality.

In response to the difficulty of lining the test technology, technical personnel carried out research on the combination of false and reality, and ensured that the test scheme was successful through digital process simulation and virtual trials. Bi Jingdan, the person in charge of the test, introduced the digital process simulation technology to effectively guide the test virtual installation process, and optimize, inspect and verify the assembly and debugging process of test products and test system equipment.

In addition, there are unknown scientific mechanism problems in multiple segments, the structural carrying capacity of the combination, complex boundary and environment, and the load transfer law and structural response. According to Yang Rong, the person in charge of the test split system, the test team innovative adopting digital test verification ideas combined with physical tests and virtual experiments, and modifying the simulation calculation model with actual testing data to identify the integrated structure design of the virtual model identification structure. Then obtain the load and environmental conditions of the real working conditions, and then evaluate the complicated structural transmission and response laws through simulation to verify the structure of the tail compartment structure.

Source: Science and Technology Daily

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