Core Viewpoint - The article highlights the significant advancements in China's aircraft strength research and verification over the past 60 years, emphasizing its critical role in ensuring the safety and performance of domestic aircraft like the C919 and AG600 [3][4][8]. Group 1: Development History - The strength research institute was established during the "Third Line Construction" period in 1964, marking a pivotal shift in China's aviation industry from repair to manufacturing and design [4][6]. - The first full-scale destruction test of the H-6 aircraft in 1968 demonstrated China's capability for large aircraft strength verification, marking a new phase in the country's aviation strength research [4][6]. - Over the past six decades, the institute has evolved from a single focus on strength testing to a multi-faceted approach that includes manuals, guidelines, standards, and tools [8]. Group 2: Testing Capabilities - The institute has developed a "building block" testing capability system that includes full-scale static, fatigue, and ground vibration tests, ensuring comprehensive validation of aircraft structures [6][7]. - It has completed hundreds of full-scale tests and thousands of large component tests, supporting the development of key aircraft such as the J-20, Y-20, C919, and AG600 [8]. Group 3: Climate Environment Laboratory - After 15 years of research, the institute established a climate environment laboratory that is internationally leading, capable of simulating extreme weather conditions for aircraft testing [9][10]. - This laboratory can recreate 12 types of extreme climate conditions, significantly enhancing the testing capabilities for aircraft adaptability [10][11]. Group 4: Software Development - The institute has developed the SABRE structural analysis software system, which supports various engineering and structural strength needs, breaking the reliance on foreign software [12]. - This software has been applied across multiple industries and has resolved numerous challenges in aircraft development [12]. Group 5: AG600 Aircraft Development - The AG600 amphibious aircraft, designed for both land and water operations, received its type certificate from the Civil Aviation Administration of China, marking a significant achievement in its development [16][19]. - The strength institute played a crucial role in verifying the structural integrity of the AG600, addressing unique challenges posed by its dual-environment functionality [19][20].

Core Viewpoint - The China Aircraft Strength Research Institute, established 60 years ago, has significantly contributed to the development of key national aircraft such as the J-20, Y-20, C919, and AG600, supporting the innovation and advancement of aviation weaponry [1][2]. Group 1: Historical Development - The Strength Research Institute, created in 1965, is the only center in China for aircraft strength research, verification, and certification, responsible for ground strength validation tests for new and modified aircraft [2]. - The completion of the H-6 aircraft destruction test in 1968 marked China's capability to conduct large aircraft strength verification, ushering in a new era for the country's aviation strength sector [2]. - Over the past 60 years, the institute has developed a comprehensive testing capability system covering various types of military and civilian aircraft [2]. Group 2: Innovations and Achievements - The institute has focused on meeting equipment development needs and has achieved several "firsts" in both domestic and international contexts, including the establishment of a large-scale climate environment laboratory for weapon systems [3]. - The climate environment laboratory is the largest and most complex of its kind globally, enabling the simulation of various environmental factors, thus enhancing the efficiency of equipment development [3]. - The laboratory has been instrumental in supporting the development of both military and civilian aircraft, including accelerating the airworthiness certification process for domestic large passenger aircraft [4]. Group 3: Specific Projects - The AG600 amphibious aircraft, the largest of its kind globally, successfully passed rigorous testing and verification, with the Strength Research Institute playing a crucial role throughout its development cycle [5]. - The C919 aircraft project has seen significant contributions from the institute, including overcoming technical challenges and conducting high-altitude tests in its climate environment laboratory [6]. - The institute pioneered the indoor testing of engine performance under snow conditions, marking a significant advancement in aircraft testing methodologies [6].