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Wind Shear's Full Scale Rolling Road, Automotive Wind Tunnel (Concord, North Carolina)
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Wind Shear's Full Scale Rolling Road, Automotive Wind Tunnel (Concord, North Carolina) : ウィキペディア英語版
Wind Shear's Full Scale Rolling Road, Automotive Wind Tunnel (Concord, North Carolina)

In January 2008 Wind Shear, a division of US machine tool builder Haas Automation, completed construction of the wind tunnel. The full scale tunnel is located adjacent to Concord Regional Airport in Concord, North Carolina. The commercial operation was designed for vehicles from stock car, formula one, indy car, drag racing, as well as production car industries.
Wind Shear's tunnel is a closed air circuit, temperature controlled system built around a rolling road. The rolling road, akin to a giant treadmill, is 3 meters wide by 9 meters long and accommodates full size cars. Air and rolling road speeds are coordinated up to . Air temperature, critical to repeatable data collection, is maintained at a constant ), plus or minus one degree. Air is moved through the massive air circuit at the maximum rate of per second by a motor and 29 carbon fiber blades in diameter.
In the wind tunnel industry, size is everything. The blockage effect is the condition where air flow in the wind tunnel is partially blocked by the vehicle. The blockage becomes more critical as the cross section of the test vehicle increases relative to the size of nozzle and airstream. As the vehicle increases in size relative to the nozzle, test data become less reliable as increased blockage affects the quality of the actual windstream.() Windshear's solution was to build a sufficiently large air circuit. Nozzle size is a relatively large 180 square feet (16.7 square meters).
==See also==

*Wind shear

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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