A numerical study on the effect of sweep angle on flapping-wing flight using fluid-structure interaction analysis

Dae-Kwan Kim; Jun-Seong Lee; Jae-Hung Han

doi:10.1117/12.824848

20 October 2009 A numerical study on the effect of sweep angle on flapping-wing flight using fluid-structure interaction analysis

Dae-Kwan Kim, Jun-Seong Lee, Jae-Hung Han

Author Affiliations +

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74931S (2009) https://doi.org/10.1117/12.824848
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

The sweep-back effect of a flexible flapping wing is investigated through fluid-structure interaction analysis. The aeroelastic analysis is carried out by using an efficient fluid-structure interaction analysis tool, which is based on the modified strip theory and the flexible multibody dynamics. To investigate the sweep-back effect, the aeroelastic analysis is performed on various sweep-back wing models defined by sweep-chord ratio and sweep-span ratio, and then the sweep-back effect on the aerodynamic performance is discussed. The aeroelastic results of the sweep-back wing analysis clearly confirm that the sweep-back angle can help a flexible flapping wing to generate greater twisting motion, resulting in the aerodynamic improvement of thrust and input power for all flapping-axis angle regimes. The propulsive efficiency can also be increased by the sweep-back effect. The sweep angle of a flapping wing should be considered as an important design feature for artificial flexible flapping wings.

Citation Download Citation

Dae-Kwan Kim, Jun-Seong Lee, and Jae-Hung Han "A numerical study on the effect of sweep angle on flapping-wing flight using fluid-structure interaction analysis", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74931S (20 October 2009); https://doi.org/10.1117/12.824848

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