A joint project titled 'Key Technologies and Applications of Multi-Level Design and Manufacturing for Aviation Textile Composite Structures,' completed by Northwestern Polytechnical University, Yunlu Composites (Shanghai) Co., Ltd., Chengdu Aircraft Industrial (Group) Co., Ltd., Donghua University, and Chengdu Zongheng Dapeng UAV Technology Co., Ltd., has recently passed a technical appraisal organized by the China National Textile and Apparel Council. The overall technology has reached the international advanced level, marking a systematic breakthrough in technical barriers for China's aviation textile composite sector, with full-chain capabilities from basic research to engineering application now maturing.
Technical System: From Multi-Scale Modeling to Integrated Manufacturing
Textile composites, known for their high specific strength, high specific stiffness, and excellent fatigue and impact resistance, are becoming core candidate materials for next-generation UAV structures and critical aviation engine components such as casings and blades. However, their multi-scale, multi-component, and complex weave characteristics make mechanical response and damage failure mechanisms extremely complex, with traditional technologies struggling to achieve precise evaluation and high-consistency manufacturing.
The project team tackled these pain points by building a full-chain technical system covering material characterization, multi-scale modeling, structural design, and high-performance manufacturing. Specifically, the project achieved three key innovations:
- Developed a multi-scale predictive analytical model for the progressive failure behavior of textile composites in aviation equipment, forming a wide strain-rate mechanical property characterization and simulation method system. This allows more accurate prediction of material performance under extreme conditions during the design phase, significantly reducing trial-and-error costs.
- Constructed a multi-level performance design and evaluation method for textile composite structures, enabling precise prediction and assessment of key mechanical properties for full-scale aviation composite structures. For buyers, this directly translates to improved product reliability and shortened certification cycles.
- Established high-performance manufacturing and conformity verification methods for aviation textile composite structures, building an integrated platform covering design, collaborative weaving, online inspection, and VARI molding. This bridges the gap from lab to mass production.
Industry Impact: From Lab to Production Line
Currently, the project has established a flexible manufacturing production line for textile composites tailored to complex aviation structures, with products already applied in UAV intakes, engine casings, and containment rings. This not only demonstrates technological maturity but also directly drives collaborative upgrades across the upstream and downstream supply chain.
For upstream raw material suppliers, demand for high-performance fibers and preforms will grow significantly, especially for specialty fibers like carbon and aramid, with aviation usage expected to see a new wave of expansion. For midstream manufacturers, the localization of 3D braiding intelligent equipment and VARI molding processes will accelerate, reducing reliance on imported technology and equipment.
Notably, the project adopted a typical 'industry-university-research-application' collaboration model. Northwestern Polytechnical University's deep expertise in aerospace and mechanics, Donghua University's strengths in textile science and engineering, Chengdu Aircraft Industrial Group's engineering validation capabilities, and Yunlu Composites' specialization in 3D braiding equipment and product manufacturing together form a complete innovation ecosystem. The key insight for the industry is that single entities struggle to overcome full-chain challenges; cross-sector collaboration is the critical path to breaking technical barriers.