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#1
January 28th 09, 06:59 PM
posted to rec.aviation.soaring
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L/D @ SPEED
Sailplanes have of necessity a polar with min sink at speeds where
circles can be small enough to center thermals, and L/Dmax only a few knots higher. Ballast is added to raise the L/D max perhaps 10Kts higher. What might a wing look like that was built for optimum L/D @ 80-100Kts? What kind of L/D might be possible? (will this winter never end?) Mark J 
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