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On the shape optimization of flapping wings and their performance analysis
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.
2014 (English)In: Aerospace Science and Technology, ISSN 1270-9638, E-ISSN 1626-3219, 274-292 p.Article in journal (Refereed) Published
Abstract [en]

The present work is concerned with the shape optimization of flapping wings in forward flight. The analysis is performed by combining a gradient-based optimizer with the unsteady vortex lattice method (UVLM). We describe the UVLM simulation procedure and provide the first methodology to select properly the mesh and time-step sizes to achieve invariant UVLM simulation results under mesh refinement. Our objective is to identify a set of optimized shapes that maximize the propulsive efficiency, defined as the ratio of the propulsive power over the aerodynamic power, under lift, thrust, and area constraints. Several parameters affecting flight performance are investigated and their impact is described. These include the wingʼs aspect ratio, camber line, and curvature of the leading and trailing edges. This study provides guidance for shape design of engineered flying systems.

Place, publisher, year, edition, pages
Elsevier, 2014. 274-292 p.
National Category
Subatomic Physics
Research subject
Theoretical Physics
URN: urn:nbn:se:uu:diva-287796DOI: 10.1016/j.ast.2013.10.010OAI: oai:DiVA.org:uu-287796DiVA: diva2:923569
Available from: 2016-04-26 Created: 2016-04-26 Last updated: 2016-04-26

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S1270963813001983

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Niemi, Antti
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