Intrinsic Stability of a Body Hovering in an Oscillating Airflow
Bin Liu, Leif Ristroph, Annie Weathers, Stephen Childress, and Jun Zhang
Physical Review Letters
108,
068103 (2012).
Simulations:
- Hovering pyramid in an oscillating, wind-tunnel. Bin Liu and Jun Zhang (click here to run the movie)
- Vortex shedding (momentum downwash) around a pyramid strutcture
in an oscillating flow. Bin Liu and Jun Zhang (click here to run the movie)
- Vortex emission to the side, corresponds to the restoring torque
for the paper-bug when it is tilt. Bin Liu and Jun Zhang (click here to run the movie)
- A bottom-heavy paper bug fails down in an oscillatory
airflow. Leif Ristroph and Jun Zhang (click here to run the movie)
- A top-heavy paper bug restores its upright posture in an oscillatory
airflow. Leif Ristroph and Jun Zhang (click here to run the movie)
Press:
- Designing Stable Tiny Fliers, NSF Science360, 2012
- Kate McAlpine, The Unusual Physics of Floating Pyramids, Science Now, Feb. 7, 2012
- Trevor Quirk, Why you shouldn't expect a hoverboard any time soon, The Christian Science Monitor, Feb. 13, 2012
- Lewis Page, Boffins claim breakthrough in hovering robothopter experiments, The Register (UK), Feb. 13, 2012
- New research could lead to hovering airplanes for the military, The State Column, Feb. 11, 2012
- Hovering isn't difficult if you're top heavy, Trent Nouveau, The TG Daily, Feb. 10, 2012
- Damon Poeter, Researchers Get Closer to Replicating Flapping-Wing Flight, PCMAG.COM, Feb. 13, 2012
- James Devitt, Top-heavy 'bugs' show how to hover, Futurity, Feb. 13, 2012
- Research Finds Top-Heavy Flying Objects Maintain Balance Best, Red Orbit, Feb. 13, 2012
|
