Bionic deployable wing design based on Asian ladybird beetle

Asian ladybird beetle (Harmonia axyridis) is a kind of tiny flapping insects whose hind wings can be deployable for flight. The folding/unfolding mechanism of the hind wing gives inspiration to design the bionic deployable wing for flapping-wing micro air vehicles (FMAVs). The main veins of H. axyridis are hollow that are helpful for the deformation including hind wing folding and unfolding process. Based on the veins structure morphologies observed by slicing test and inverted fluorescence microscopy, the three-dimensional (3-D) model of wing frame of folding/unfolding wing can be designed for FMAVs and will be static analyzed next. The main wing frame is designed as hollow structure which can decrease the mass of wing and is useful for folding. The static analysis results show the significant factors of the wing structure optimized for FMAVs.