| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
In this study, we have proposed a morphing flapping wing, which can change the airfoil so as to have an optimal shape at every moment during a flapping cycle. We have developed two types of morphing system: active and passive control of airfoil. The active morphing flapping wing has a hinge connecting fore- and hindwings, which can achieve an appropriate camber in both the up- and downstrokes by actively controlling the hinge angle. The passive morphing system utilizes passive aeroelastic deformation of the flapping wing so that the system can be small size and light weight for the purpose of implementation in micro air vehicles. We experimentally and numerically clarified the effect of the morphing flapping wing on the aerodynamic characteristics and investigated optimal design parameters for high aerodynamic efficiency. The results show that the developed morphing wings successfully achieved an enhancement of lift without an increase of aerodynamic power.
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