Smile! Dimples boost your mileage
Trucks covered with tiny indentations, like those on golf balls, experience less friction
By Sid Perkins, 13:22 PM May 27, 2013
Part of the energy used to move a car, truck or plane is spent overcoming the friction posed by air. The force caused by that friction is known as aerodynamic drag — and it can really hold a vehicle back. Over the years, researchers have developed ways to cut that drag. Now, an 18-year-old engineer has come up with a new approach. It’s specifically designed to boost the fuel efficiency of large trucks. And her solution: Just add lots of tiny dimples.
When air slams into an object, it has now...
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