drag Archives – The Green Optimistic green tech news, since 2008 Sat, 27 Sep 2008 15:06:10 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 100 Year-Old Aerodynamics Problem Solved: Could Increase MPG Dramatically https://www.greenoptimistic.com/100-year-old-aerodynamics-problem-solved-could-increase-mpg-dramatically-20080927/ https://www.greenoptimistic.com/100-year-old-aerodynamics-problem-solved-could-increase-mpg-dramatically-20080927/#respond Sat, 27 Sep 2008 15:06:10 +0000 https://www.greenoptimistic.com/?p=939 MIT researchers discovered the solution to a problem put 100 years ago by Ludwig Prandtl. It refers to the situation when, for example, a car accelerates up and down a hill, then slows to follow a turn, and the airflow around it cannot keep up and separates from it. This aerodynamic phenomena creates an additional drag, slowing the car, and forcing you to push harder on the pedal, consuming more gas.

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]]> https://www.greenoptimistic.com/100-year-old-aerodynamics-problem-solved-could-increase-mpg-dramatically-20080927/feed/ 0 939 Aerodynamic Trucks Fight Diesel Rising Prices https://www.greenoptimistic.com/aerodynamic-trucks-fight-diesel-rising-prices-20080614/ https://www.greenoptimistic.com/aerodynamic-trucks-fight-diesel-rising-prices-20080614/#respond Sat, 14 Jun 2008 14:08:16 +0000 https://www.greenoptimistic.com/?p=304 While diesel is approaching $5 a gallon, researchers become more interested in finding a way to reduce fuel consumption on the heavy trucks at highway speeds. Now they have come up with an interesting idea: while there's little point in firstly modifying the engines to consume less, and spending a lot of money on upgrading them, the focus went on making the existing heavy weight trucks more aerodynamic.

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