<A Secret Tool for the U.S. Swim Team ⁄ >

Around the time that the swimwear company Speedo was calling on NASA scientists to help create the now famous LZR Racer suit--an enhanced skin that many people credit for more than a dozen world records broken by swimmers so far this week in Beijing--a scientist in New York began working on a different tool for the swimmer's armory. Over the past five years, Tim Wei, a mechanical and aerospace engineer at Rensselaer Polytechnic Institute, has revamped an established technique in fluid dynamics to study human movement for the first time. The method allows scientists and coaches to study how fast and hard a swimmer pushes the water as she moves through it. Swim coach Sean Hutchison, who put two athletes on the Olympic swim team, says that he used Wei's insights as the basis for every technical change he made with swimmers leading up to the Olympic trials and games this year.



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