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Originally Posted by Tesla
Outside everything else you wrote which is full of aha! moments and I always get more insight,
That last part, 2.5:1 template over the top and 4:1 down the sides, pretty much throws us back into the range of the bluefin tuna and other aquatic kin.
Thee 0039 equation & spreadsheet has been great to be able to throw numbers in and study the outcomes and angles and that's why I was looking for an equation to work with, just think it's much easier to take a set of numbers out, mark them on the sectional areas, then cut and join up than trying to set angles as you go.
I do need to go back and revise the spreadsheet to allow the use of different curvature for the x & y coordinates, with the new knowledge that I have absorbed.
I think you are half right with the rosetta stone, but no doubt, once you have whaqt you think is the "perfect form", another stone will be turned over to reveal even more details of perfection.
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Yeah,it's a bit of a joke to presume that for so many types of vehicles manufactured that there would ever be a one-size-fits-all template.
What is a big help for us though,are a number of remarkably efficient vehicles of different types which have already been 'pulled off,' which we can consider when looking at a specific project.
FYI,if you haven't seen a copy of Wing Theory,by Abbott and von Doenhoff, it's full of location vectors for hundreds of wing sections.You could construct anything NACA ever looked at.Nearly.