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Proceedings Paper

A numerical study on the effect of sweep angle on flapping-wing flight using fluid-structure interaction analysis
Author(s): Dae-Kwan Kim; Jun-Seong Lee; Jae-Hung Han
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Paper 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.

Paper Details

Date Published: 20 October 2009
PDF: 8 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74931S (20 October 2009); doi: 10.1117/12.824848
Show Author Affiliations
Dae-Kwan Kim, Korea Aerospace Research Institute (Korea, Republic of)
Jun-Seong Lee, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Jae-Hung Han, Korea Advanced Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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