Core Viewpoint - The article pays tribute to Liu Daxiang, a prominent figure in China's aerospace industry, highlighting his dedication and contributions to the development of domestic aviation engines, emphasizing his lifelong commitment to the field and the importance of nurturing future generations [2][7][34]. Group 1: Personal Background and Achievements - Liu Daxiang, born in October 1937, is an academician of the Chinese Academy of Engineering and a professor at Beihang University, recognized as a pioneer in China's independent research and development of aviation engines [7]. - He has led significant projects, including the establishment of a world-leading high-altitude simulation test platform for aviation engines, and has been instrumental in the development of China's third, fourth, and fifth-generation aviation engines [7][27]. Group 2: Challenges and Determination - Liu Daxiang faced numerous challenges, including a lack of resources and technical barriers, particularly during the construction of the high-altitude simulation test platform, which was crucial for the development of domestic aviation engines [17][19]. - Despite facing setbacks, including a significant reduction in funding from over 10 million yuan to 800,000 yuan annually, Liu remained committed to the project, famously stating he would rather "die in Songhua Ridge" than abandon the effort [22][24]. Group 3: Contributions to Aviation Technology - Under Liu's leadership, China became the fifth country to possess a large-scale continuous gas source high-altitude test platform, achieving a breakthrough from "0 to 1" in aviation engine technology [27]. - Liu emphasized the need for China to transition from "measuring and imitating" to "independent research and development" of aviation engines, which has led to the successful development of medium and large thrust fourth-generation engines [32][33]. Group 4: Future Aspirations - At 88 years old, Liu Daxiang continues to advocate for advancements in aviation technology, including the development of next-generation hybrid engines and a vision for an aviation rescue system, aiming to make significant strides in the industry [34][36]. - He has established an educational fund to support future generations in the aerospace field, reflecting his commitment to nurturing talent and ensuring the continuity of innovation in China's aviation sector [34].

Core Viewpoint - The AES100 engine, a domestically developed 1000 kW class advanced civil turboshaft engine in China, has received a production license and signed sales contracts, marking a significant milestone in the country's aviation engine industry [1][3]. Group 1: Engine Specifications and Applications - The AES100 engine is characterized by high safety, good economy, easy maintenance, and wide environmental adaptability, suitable for 5-6 ton dual-engine helicopters and 3-4 ton single-engine helicopters, as well as tilt-rotor aircraft for various missions including transport, sightseeing, and rescue [3]. - The production license indicates that the industrial manufacturing capability of the AES100 engine has received airworthiness approval [3]. Group 2: Future Developments and Contracts - In addition to the production license, China Aviation Engine Group has signed sales and leasing contracts for the AES100 engine, which will serve as the core power unit for the 6-ton tilt-rotor unmanned transport platform "Lan Ying R6000," with delivery planned for 2026 [6]. - The industry is rapidly advancing towards a full spectrum of general aviation engines, with multiple domestically developed advanced aviation engines expected to achieve their first flights and certifications within the next year [6]. Group 3: Additional Engine Projects - Based on the AES100, researchers have developed the AEP100, a 900 kW class turboprop engine designed for 3-10 ton drones, which has completed its first flight and meets international performance standards for its class [6]. - A 200 kW class turboshaft engine, the AES20, is also under development for light aircraft, with expected first flight by the end of 2025 and airworthiness certification by 2026 [6].