This is a start on the design for the Pitts S-2 and Christen Eagle airplanes. I have the spars at 20.5" apart (CL-to-CL) and the front spar 6" aft of the LE. What I need to complete this drawing set is the dimensions of the spars for both airplanes -- typically either the major and minor heights and the thickness or the major height, angle and thickness. The airfoils are somewhat independent of the board design since I'm over the spars with my pickup points. What I did for the preliminary design was to scale the S-1S ribs to 40" which should be close, at least for the S-2. I'll refine this as soon as I get the data on the spars.
UPDATE:
This file has been updated and is no longer the preliminary version. Please post any comments corrections, questions, etc.
View attachment 1130
UPDATE:
This file has been updated and is no longer the preliminary version. Please post any comments corrections, questions, etc.
View attachment 1130
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