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#1
December 10th 10, 12:59 AM
posted to rec.aviation.soaring
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New Vent!
On Thu, 9 Dec 2010 13:27:59 -0800 (PST), Andy
wrote: I'm more interested in real performance numbers though. I don't mind getting the back of my head wet a couple of times a year for a gain 50 fpm at 90 kts. 0.001 fpm at 90 kts and maybe it's not worth the risk of getting wet. If Francisco de Almeida's (Hi pal!) math is correct, and ventilation at 100kts really costs 30W, then I believe we're talking about a potential reduction in drag between 0,5% and 0,1%. Well, my math isn't going to pass any tests... aldo cernezzi 
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