Tuesday, June 21, 2011

Bats' hairs are 'airspeed sensor'

Tiny hairs that cover bats' wings seem to act as a complex airspeed sensor, researchers report in Proceedings of the National Academy of Science.

Experiments showed that bats' brains distinguished between airflow direction when air flowed over them at low speed.

However, with the hairs removed, the bats executed fewer tight turns and flew at higher speeds.
The researchers suggest the hairs allow fine control over aerodynamics as airflow changes during manoeuvres.

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