03.1 - Aerodynamics – CFD Methods and Validation
OPTIMIZATION OF MORPHOLOGICAL AND KINEMATIC PARAMETER FOR FLAPPING WING IN FORWARD FLIGHT
D. Xue¹, Y. Gao¹, T. Wu¹, B. Song¹, W. Song¹; ¹Northwestern Polytechnical University, China
The paper conducted a optimization of morphological and kinematic parameters of flapping wings, based on the CFD method and surrogate optimization model. The optimization model considered the complex motion parameters of birds, including the proportion of flapping time, flapping, sweeping, and passive twisting, and the planar shape was divided into two segments to make the morphology and motion closer to the real geometric and motion patterns of birds. The optimization results showed that when maximizing thrust was the optimization goal, the optimized thrust could be increased by 20% compared with the baseline wing, with the proportion of downstroke time having the most significant effect. When maximizing lift was the optimization goal, the optimized lift could be increased by 20% compared with the baseline wing, the proportion of downstroke time and the area ratio of the inner and outer segments had the most significant effect. Twisting played an important role in both lift and thrust optimization processes, especially when the twist of the inner segment was maintained at an appropriate level; too much or too little twist would have negative effects on lift and thrust. The optimization model provides a useful tool for the design of complex motion and planar shapes of bird-inspired FWMAVs, promoting further improvement of the aerodynamic performance of flapping wings.
DOI: 10.71945/icas2026_0089