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Folding in and out motion of a bat wing during fight [5].

Folding in and out motion of a bat wing during fight [5].

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Fig. 1: Bat wing regions [3]
Fig. 2: Folding in and out motion of a bat wing during fight [5].
Fig. 7: Drag Versus Advance Ratio
The Effect of Wing Margin Shape Generalisation on the Aerodynamic Performance of a Bat Inspired Wing
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  • Jan 2018
Bio-inspiration is a method of design that uses findings and observation from the field of biology and applying them in mechanical applications. In this study, bio-inspiration was used to develop a flapping wing for a Micro Air Vehicle. This is done by producing a wing geometry by tracing the margin shape of the wing. The trace was then used to gen...
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... bat flight ranges from 3Hz to 7 Hz. In that study it was also shown that the flapping motion is more complex than a simple sinusoidal flap- ping motion. A natural bat wing flaps in a folding in and out mo- tion with the wing area almost double during the downstroke mo- tion and the wing area contracts during the upstroke motion (as can be seen in Fig. 2). This is because it is to minimize the nega- tive lift forces of the upstroke motion while maximizing the posi- tive lift of the downstroke motion. These observations done by previous works will be the basis for the bio-inspiration done in this study. ...