速度提高62.5%！中国科学家突破世界难题

Core Viewpoint - The team from Nanjing University of Aeronautics and Astronautics has achieved a significant breakthrough in the field of aviation technology by enhancing the critical speed of aeroelastic flutter by 62.5%, setting a world record in this area [1][3]. Group 1: Research Achievements - The team has developed a four-degree-of-freedom dynamic model for rigid-elastic coupling flutter, clarifying the mechanism of flutter and revealing the influence of sensitive parameters on flutter characteristics [3]. - An innovative modeling method that integrates flight mechanics and aerodynamic elasticity has been created, leading to the development of a proprietary rigid-elastic coupling flight mechanics modeling software, breaking foreign monopolies in this field [3]. Group 2: Application and Impact - The team has successfully designed a flexible wing layout unmanned aerial vehicle (UAV) with a span-to-chord ratio exceeding 10, which has been validated through flight tests demonstrating the enhanced flutter critical speed [3].