Fan blade formed by weaving fibers and provided with corrugated structures with different sizes on surface

• Main Authors: HE HONGBIN, YU DONGHUI, KANG ZHENYA, ZHAO ZHI-QI, ZHAO CHANGYU, LI GUANGCHAO, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 21.11.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention discloses a fan blade with corrugated structures with different sizes on the surface formed by weaving fibers, and belongs to the technical field of aero-engine fan blade pneumatics. According to the fan blade of the different-scale corrugated structure on the surface, the fan blade is integrally formed by weaving the fibers through the metal framework and the light resin, the internal structure of the fan blade is the 3D-printed metal framework, and the fibers with the tensile property are attached to the metal framework to conduct three-dimensional net-shaped weaving; and light resin is filled in gaps among the fibers formed by netted weaving. Fiber is attached to a metal framework for three-dimensional weaving of different layers, corrugated structures of different scales are formed on the surface of the fan blade, transition of a boundary layer from layer to turbulent flow is accelerated, radial undercurrent on the surface of the blade is weakened, and flow loss of the boundary layer is redu