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Bat Flight

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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Bat Flight

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  1. Bat Flight

  2. “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…”

  3. A very articulate animal

  4. Kinematics of Flexible Membrane

  5. Particle Image Velocimetry

  6. Experiment Setup

  7. Complex Wing Flapping

  8. Eddy-one home? The Kelvin CirculationTheorem a

  9. Stokes Theorem: Why we measure vorticity Relates path integral of velocity to vorticity

  10. Get ready for lift-off

  11. Wake Up! 

  12. Vorticity – one last look

  13. Strouhal Number

  14. Physics/Engineering Biology/Physiology Biomimic bat wing

  15. Straight from the horse’s mouth

  16. What features are being mimicked - or not?

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

  18. Motors/actuation

  19. Measuring lift and thrust

  20. Going batty (?)

  21. References 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, Cynopterusbrachyotis." 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.

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