Abstract
The dragonfly wing is passively deformed under flapping and has the strength to withstand high flapping frequency simultaneously. These characteristics of vibration of wings are important for dragonfly flight. However, the effect of those on dragonfly flight has not been well understood. For the purpose of investigating an artificial wing suitable for flapping Micro Air Vehicle, we measured natural frequency and deformation of the wing and fabricated the artificial wing based on the results of that. From the results, the dragon fly wing has the high natural frequency of 120 Hz. The tip-side of the wing is greatly deformed. Then, we fabricated the deformable artificial wing which can deform in the same manner of dragonfly wings and measured aerodynamic force and power consumption under flapping. As a result, the power efficiency of aerodynamic force using the deformable wing is 5 times greater than the power efficiency using an undeformable wing.
