A system for affecting the flow of a fluid medium relative to an object including a plurality of surface deviations disposed on the surface of the object. The deviations are grouped into at least one set and the sets are arranged into at least one predetermined pattern. The deviations cover only a portion...http://www.google.fr/patents/US4872484?utm_source=gb-gplus-shareBrevet US4872484 - System for controlling the flow of a fluid medium relative to an object
System for controlling the flow of a fluid medium relative to an object
