The effects of bio-inspired wing vein morphology on thrust generation in double-clap flapping-wing robots

Abstract

Wing design is a critical factor in the aerodynamic performance of flapping-wing (FW) robots. Inspired by the natural wing structures of insects, bats, and birds, we explored how bio-mimetic wing vein morphologies, combined with a bio-inspired double wing clap-and-fling mechanism, affect thrust generation. This study focused on increasing vertical force and payload capacity. Through systematic experimentation with various vein configurations and structural designs, we developed innovative wings optimized for thrust production. Comprehensive tests were conducted to measure aerodynamic forces, power consumption, and wing kinematics across a range of flapping frequencies. Additionally, wings with different aspect ratios, a key factor in wing design, were fabricated and extensively evaluated. The study also examined the role of bio-inspired vein layouts on wing flexibility, a critical component in improving flight efficiency. Our findings demonstrate that the newly developed wing design led to a 20% increase in thrust, achieving up to 30 g-force (gf). This research sheds light on the clap-and-fling effect and establishes a promising framework for bio-inspired wing design, offering significant improvements in both performance and payload capacity for FW robots.