NDLI: Quantification of the benefits of a compliant foil for underwater flapping wing propulsion

Content Provider	IEEE Xplore Digital Library
Author	Lock, R.J. Peiris, B.H.P.M. Bates, S. Burgess, S.C. Vaidyanathan, R.
Copyright Year	2011
Description	Author affiliation: Department of Mechanical Engineering at the University of Bristol, BS8 1TR, UK (Lock, R.J.; Peiris, B.H.P.M.; Bates, S.; Burgess, S.C.) \|\| Department of Mechanical Engineering at Imperial College London, SW7 2AZ, UK (Vaidyanathan, R.)
Abstract	This paper presents results detailing the performance of a flexible wing for use on a vehicle capable of both aerial and aquatic modes of locomotion, with primary focus on the aquatic substrate. The motivation for the research stems from the ability of avian species within the natural world demonstrating this multi-modal capability, utilsing a flapping mechanism as a means of propulsive generation. The fundamental aim is to capture the beneficial traits of a flexible wing and quantify any potential improvements in performance. We present a simplified numerical model which acts as an initial design tool prior to the fabrication of a flexible wing. This model aids in wing geometry selection so that under key kinematic parameters the wing passively deforms during aquatic operations in a beneficial manner, in an attempt to increase the maximum lift coefficient of the foil. Using the model we have fabricated a flexible wing and experimentally evaluated its performance in a range of tests, varying kinematic parameters relating to the flapping motion and forward velocities and compared this with a rigid wing model to investigate if the passive chord-wise flexibility leads to an increase in propulsive efficiency. We present the initial data set making this comparison, showing that the flexible wing was found to exhibit higher propulsive efficiencies at specific kinematic parameter sets. This modeling and experimental study will provide a foundation for the design of future vehicles capable of swimming and aerial locomotion, and help quantify the benefits of passively compliant structures in flapping wing propulsion.
Starting Page	898
Ending Page	903
File Size	336030
Page Count	6
File Format	PDF
ISBN	9781457708381
ISSN	21596255
e-ISBN	9781457708398
DOI	10.1109/AIM.2011.6027097
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-03
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vehicles Numerical models Kinematics Mathematical model DC motors Testing Equations
Content Type	Text
Resource Type	Article

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