**4. Conclusion**

In the current chapter, we present an integrative approach to study the aerodynamics of free-flying insects. This proposed novel approach combines high-speed photogrammetry, 3D surface reconstruction, and computational fluid dynamics and is capable of measuring the wing kinematics and surface deformation and simulating its aerodynamic performance. Four different species of insects, including dragonfly, damselfly, butterfly, and cicada, were investigated to demonstrate the capability of the current method. From these collected data, we provide insight into the understanding of flapping wing mechanism and revealing the underlying flow physics for future MAV designs and applications.
