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Bat Flight

Bat Flight

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Bat Flight. “Is your mama a llama?” I asked my friend Dave . “ No, she is not,” is the answer Dave gave. “ She hangs by her feet, and she lives in a cave. I do not believe that’s how llamas behave.” “ Oh,” I said. “You are right about that. I think that your mama sounds more like a…”. - PowerPoint PPT Presentation

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Page 1: Bat Flight

Bat Flight

Page 2: Bat Flight

“Is your mama a llama?” I asked my friend Dave.

“No, she is not,” is the answer Dave gave.

“She hangs by her feet, and she lives in a cave. I do not believe that’s how llamas behave.”

“Oh,” I said. “You are right about that. I think that your mama sounds more like a…”

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A very articulate animal

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Kinematics of Flexible Membrane

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Particle Image Velocimetry

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Experiment Setup

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Complex Wing Flapping

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Eddy-one home? The Kelvin CirculationTheorem

a

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Stokes Theorem: Why we measure vorticity

Relates path integral of velocity to vorticity

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Get ready for lift-off

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Wake Up!

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Vorticity – one last look

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Strouhal Number

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Biomimic bat wing

Physics/EngineeringBiology/Physiology

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Straight from the horse’s mouth

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What features are being mimicked - or not?

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The arm bones connects to the elbow.. (sing along now!)

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Measuring lift and thrust

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BAT FLIGHT AND KINEMATICS Tian, Xiaodong, et al. "Direct measurements of the kinematics and dynamics of bat

flight." Bioinspiration & Biomimetics 1.4 (2006): S10. Hubel, Tatjana Y., et al. "Wake structure and wing kinematics: the flight of the lesser

dog-faced fruit bat, Cynopterus brachyotis." The Journal of experimental biology 213.20 (2010): 3427-3440

Hardi P, “Why can airplanes fly?” http://www3.kis.uni-freiburg.de/~peter/teach/hydro/hydro05.pdf

BIOMIMIC BAT WING Bahlman, Joseph W., Sharon M. Swartz, and Kenneth S. Breuer. "Design and

characterization of a multi-articulated robotic bat wing." Bioinspiration & biomimetics 8.1 (2013): 016009.

References