Shape optimisation and performance analysis of flapping wings
MetadataShow full item record
In this paper, we consider the shape optimization of flapping wings in forward flight. This analysis is performed by combining a gradient-based optimiser with the unsteady vortex lattice method. The objective is to identify a set of optimised shapes that maximise the propulsive efficiency under lift, thrust, and area constraints. The geometry of the wings is modelled using B-splines. The flow simulations using the optimal wing shapes indicate that changes in the shape have significant effects on averaged quantities. The optimal shape configuration substantially increases the time averaged thrust while, at the same time, it acquires a larger input of aerodynamic power. Increasing the number of variables (i.e., providing the wing shape with a greater degree of spatial freedom) enables increasingly superior designs. This study should provide better guidance for shape design of engineered flying systems. © Civil-Comp Press, 2012.
Showing items related by title, author, creator and subject.
Inoue, Madoka (2012)This thesis examines infant feeding practices, including knowledge and attitudes towards breastfeeding, factors that influence the duration of breastfeeding, and breastfeeding outcomes in relation to postpartum women’s ...
Source to sink zircon grain shape: Constraints on selective preservation and significance for Western Australian Proterozoic basin provenanceMarkwitz, V.; Kirkland, Chris (2016)© 2017 China University of Geosciences (Beijing) and Peking University. The effect of selective preservation during transportation of zircon grains on the detrital age spectrum is difficult to quantify and could potentially ...
Liu, Wing Yee; Wong, C.; Chung, K.; Jiang, J.; Leung, F. (2013)The Enterobacter cloacae species includes an extremely diverse group of bacteria that are associated with plants, soil and humans. Publication of the complete genome sequence of the plant growth-promoting endophytic E. ...