NAA P-51D Mustang: Wing Geometry
Started work today on the wing geometry and ordinates.
This is the last ordinate data-set drawing I have in my P-51 archive and probably the most challenging, thus perhaps the reason why I left it until last!
The interpolated data is derived through the use of various techniques within Excel, including polynomial curve formulas to determine the values I need from the known data.
So far this has worked out rather well enabling me to make a start on a geometry plan for the wing which will verify the relative dimensions of the Leading Edge, Front Spar and the 25% Chord line.
This drawing is still “work in progress”, which is shown for reference.
The spreadsheet shows verified values highlighted in blue, unknown values in yellow and the orange refers to values that don’t make any sense in the context of the wing ordinates.
I have revisited this spreadsheet to include generated excel profiles to check the ordinates and also to derive the XYZ coordinates for input into CAD, centered about the front spar position.