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There is an interesting article on wing shape in the current issue of Flying --Jan 2003 issue --Pg 79, Technicalities : Rectangular wings , by Peter Grrison...pointing out that the hershey bar Cherokee wing is almost optimum for performance....but maybe not looks.... The rectangular wing attains the best performance and cost of construction because in performance it atttains the optimum shape for a wing which seems to be an elipse.......Interesting that the Ercoupe wing is so shaped, and Fred Weick apparently thought the additional cost of building an elipitical wing was worth the expense over a rectangular wing he and Thorp approved for the Cherokee... Interesting stuff! ,...but not STOL..... However utilizing the parameters of the original 415 C and landing speeds, the Ercoupe almost reached STOL....setting a comprimise that was acceptable. The "D" model performance was not, except for modern days with paved runways, where arrival at 75 mph is OK.... Fly Safe - Have Fun REgards, Harry Francis Blacksburg, VA. N-93530 s/n 853 ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm
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