New
understanding of bat wings could lead to advances in aviation
If
you've ever seen a bat in flight, then you'll know how quickly and precisely
they can maneuver. Scientists from Johns Hopkins University, Columbia University
and the University of Maryland have now uncovered one of the key factors that
allows them to do so - and it could have applications in the design of
aircraft.
Led
by Johns Hopkins neuroscientist Prof. Cynthia F. Moss, the researchers studied
the sensory receptors of the big brown bat. More specifically, they studied an
array of those receptors, which are clustered in groups around the base of tiny
hairs on the bat's wings. As the animal is in flight, those hairs are ruffled by
changes in airflow. The receptors allow the bat to feel those changes through
its sense of touch, so it can respond by adjusting its flight path as
needed.
In
order to test this observation, the scientists subjected bats' hairs to short
puffs of air. The animals' primary somatosensory cortex responded with very
focused but also quick bursts of activity, suggesting that the system is
optimized for making very fast maneuvers. It is now hoped that the findings
could be applied to guidance systems for aircraft such as autonomous drones,
allowing them to avoidance obstacles by reading the air turbulence flowing
around them.
A
paper on the research was recently published in the journal Cell Reports.
The
video below from Columbia University Medical Center discusses the
findings.
Video: http://tinyurl.com/pzskrf9
Video: http://tinyurl.com/pzskrf9
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