中大联合完成国内首次百公里级在线轨迹优化闭环制导飞行试验

Core Viewpoint - The successful flight test of the reusable launch vehicle's return guidance technology conducted by Sun Yat-sen University and China Aerospace Science and Technology Corporation marks a significant milestone in China's efforts to develop key technologies for reusable launch vehicles [1][3]. Group 1: Flight Test Details - The "Lihong" No.1 rocket successfully launched and reached a maximum altitude of approximately 120 kilometers before beginning a powered return [3]. - The return phase utilized a no-power working mode, focusing on verifying the feasibility and reliability of online trajectory optimization guidance methods under complex conditions [3][4]. - This flight test is noted as the first domestic closed-loop guidance flight test for online trajectory optimization at a height of 100 kilometers [3]. Group 2: Technology and Innovation - The "Shensi" No.2D system used in the test is composed of 100% domestically produced components and integrates an online trajectory optimization algorithm developed by the university's aerospace intelligent unmanned systems research team [4]. - The algorithm addresses engineering challenges such as strong nonlinear aerodynamic characteristics and resource constraints on the rocket, achieving real-time guidance under high dynamic flight conditions [4]. - The successful test results indicate that the algorithm can be adapted for various types of launch vehicles and experimental aircraft, supporting the development of low-cost space access technologies in China [4]. Group 3: Team and Collaboration - The project represents a collaborative effort between the university and industry, with several students appointed as model engineers, contributing to algorithm development and testing [4]. - The team has produced thousands of lines of algorithm code and completed numerous ground tests, culminating in the successful flight test [4]. - Professor Chen Hongbo emphasized the importance of this success as a key milestone in the exploration of reusable launch vehicle return guidance technology and the need for continued innovation and collaboration in the field [4].