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Dave99 wrote:
Thanks for the help. Actually, I built a monitoring antenna and was just trying to figure out the basic wind area. So it's not critical or anything, I was just curious. Thin rods are kind of tricky.. they have a drag that is much more than one would expect from their cross-sectional area, depending on the diameter and wind speed (i.e. the Reynolds number). Cd could be anywhere from 0.4 to almost 2.0 (this is the aerodynamic curse that afflicts old planes using exposed wires as structural members) Dave |
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