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Tuesday, May 26, 2009

Aircraft surface cavities could cut friction drag by 40%

Friction drag could be cut by 40% with aircraft surfaces that have small cavities with shaped orifices to affect turbulence mechanisms, say researchers.

The orifices would be designed to direct oscillated air across the aircraft's surface perpendicular to the relative wind. It is this redirected air flow that is believed to affect near-wall turbulence mechanisms and reduce friction drag.

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