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#11
February 21st 15, 01:27 PM
posted to rec.aviation.soaring
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Open Class
On Saturday, February 21, 2015 at 1:49:46 AM UTC-5, Bruce Hoult wrote:
On Saturday, February 21, 2015 at 5:09:07 PM UTC+13, Bob Kuykendall wrote: On Friday, February 13, 2015 at 9:49:02 PM UTC-8, Bruce Hoult wrote: ...but they lose badly to the new thin airfoils at high speed... It's kind of a nitpick, but there's really nothing new about thin airfoils. What has changed in the last decade and a half is the cost-effectiveness of the structure required to implement them in competitive sailplanes. Sure, carbon spars enabled them. Spars AND skins. Torsional stiffness is a big consideration in these structures. UH 
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