AECC AP(SH:600893) Ren Min Ri Bao·2026-01-09 22:11Core Viewpoint - The successful test flight of China's first 3D-printed turbojet engine marks a significant advancement in domestic aerospace technology, filling a gap in the application of 3D printing in engine manufacturing [1] Group 1: Engine Development and Testing - A new type of turbojet engine, measuring 3.3 meters in length and 2.1 meters in wingspan, successfully completed its first single-engine flight test, reaching an altitude of 6000 meters and a maximum speed of 0.75 Mach [1] - The test results confirmed that the engine operated stably, meeting all design parameters without any damage or failure of components, thus validating its reliability in high-altitude and complex environments [1] Group 2: Challenges of 3D Printing in Aerospace - Manufacturing aircraft engines using 3D printing presents significant challenges compared to conventional products, including the need for high-temperature alloys and precise tolerances, as well as the ability to withstand extreme loads without cracking [2] - The complexity of aerospace engine manufacturing requires overcoming the gap between consumer-grade manufacturing and extreme engineering manufacturing [2] Group 3: Advantages of 3D Printing Technology - 3D printing offers unique advantages such as a material utilization rate exceeding 90%, the ability to create intricate cooling channels, and the potential for rapid prototyping and customization, which can reduce development cycles by over 30% [3] - The technology allows for flexible design changes without the need to adjust production lines, enabling small-batch production [3] Group 4: Overcoming Technical Challenges - Despite the advantages of 3D printing, challenges such as increased engine vibration due to the loss of traditional connection parts' damping effects have been identified, prompting the development of multidisciplinary optimization techniques [4] - The new turbojet engine has surpassed similar products in performance, with reduced fuel consumption, improved thrust-to-weight ratio, and a 60% reduction in the number of parts, simplifying maintenance and lowering costs [4] Group 5: Future Prospects - The company aims to continue optimizing 3D printing parameters, advance model testing, and strengthen collaborations with downstream enterprises to accelerate the large-scale and industrial application of the new turbojet engine [4]