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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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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…”
A very articulate animal
Kinematics of Flexible Membrane
Particle Image Velocimetry
Experiment Setup
Complex Wing Flapping
Eddy-one home? The Kelvin CirculationTheorem
a
Stokes Theorem: Why we measure vorticity
Relates path integral of velocity to vorticity
Get ready for lift-off
Wake Up!
Vorticity – one last look
Strouhal Number
Biomimic bat wing
Physics/EngineeringBiology/Physiology
Straight from the horse’s mouth
What features are being mimicked - or not?
The arm bones connects to the elbow.. (sing along now!)
Motors/actuation
Measuring lift and thrust
Going batty (?)
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