| Popis: |
An aeroelastic analysis for hover-capable, bio-inspired flapping wings was developed. Bio-Inspired flapping-pitching mechanisms reported in literature, usually operate in oil or water at very low flapping frequencies. In contrast, the mechanism used in this study operated in air, at relatively high frequencies. Because of this, the light-weight and highly flexible wings used in this study had significant aeroelastic eects which need to be investigated. In this paper, a finite element based structural analysis of the wing is described, along with an unsteady aerodynamic analysis based on indicial functions. Analytical results for aluminum-mylar and composite-mylar wings were compared with the thrust measured on the bioinspired flapping-pitching mechanism. A parametric study was also carried out to investigate the eect of wing stiness on thrust generation. This parametric study showed that a large increase in thrust could be obtained by suitably adjusting the wing stiness. |
