Bloomberg Businessweek (North America) - - Technique -

● Hump­back whale flip­pers have bumps called TU­BER­CLES along their edges, which al­low them to move ef­fi­ciently through wa­ter. En­vira-north Sys­tems is cre­at­ing in­dus­trial- size fan blades with whale­like tu­ber­cles to RE­DUCE DRAG. “What’s cool about it for wind tur­bines is that you can op­er­ate at lower wind speeds,” Benyus says. “That opens up the op­por­tu­nity for wind power in zones that are no-go now.”

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