Whale flipper windmill

Preliminary tests show that bumpy-edged windmill blades, modeled after the flipper of humpback whales, can be angled more steeply than traditional blades without stalling. Designers say this turbine is more efficient.

of stories this month > Get unlimited stories
You've read  of 5 free articles. Subscribe to continue.

Unlimited digital access $11/month.

Get unlimited Monitor journalism.