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#3
February 21st 05, 12:53 AM
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On Sun, 20 Feb 2005 09:38:30 GMT, Marc Ramsey
wrote: Raved in particular about smoothness of wing skins (smoothest he's ever measured, and this one was several years old). Laminar flow nearly all the way to the trailing edge, top and bottom. Measured performance less than expected (~29:1 LD), taped on his trademark sheet aluminum wing fillets, performance noticeably better (~31.5:1), figures more improvement with properly designed fillets. Very impressed overall. Did he mention possible errors in his measurement? 7 points of missing L/D compared to the manufacturer's numbers is a universe (and looks extremely low for the Sparrowhawk's aspect ratio). Bye Andreas 
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