Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing

Birds and bats frequently reconfigure their wing planform through a combination of flapping local sweep morphing, suggesting possible approach for improving the performance micro aerial vehicles. We explore effects combined morphing on aerodynamic by employing bio-inspired two-jointed with morphing. The consists inner outer sections, which flap around root joint (shoulder) midspan (wrist), respectively. forces unsteady vortex structures are evaluated numerically solving incompressible Navier–Stokes equations. results show that can significantly enhance performance. In particular, average lift coefficient is 1.50 times greater than simple gliding single Combined also have relatively high pitch moment shift center position backward, producing advantages in terms maneuverability/agility stability. find associated motion feature vortices, arise from leading-edge vortices contribute to enhanced kinematics be further optimized if captured wing.