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#10
August 11th 13, 06:19 PM
posted to rec.aviation.soaring
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When are thermals not circular and do thermal helpers assume that they are?
What are you trying to say. Seems to me that the airmass is carrying the
thermal along and the glider with it. With that premise, circling in calm air or in a wind makes no difference. I've thermalled straight up and with a 20+ kt drift down wind. I never had to hold heading into a wind to maintain center in a thermal. Or do I misunderstand what you're saying? If that's the case, please elaborate. "jfitch" wrote in message ... On Saturday, August 10, 2013 8:43:05 AM UTC-7, Dan Marotta wrote: Your glider is drifting with the wind, too... Unfortunately, the earth, and the GPS system that tracks with it, is not..... 
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