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I had some time this morning to do some checking on my last post that I did late last night.
Here are the templates for the development.
The developments for the truncated cylinder have a sine function profile for one side. To simplify the construction I have a 180° sine curve drawing file with a period of 1 and an amplitude of 1. It has 4 CVs and is very close to a true sine curve. It looks like this.
To use it I create a block from it and then scale it in x and y to meet the requirements of the drawing. For the bottom pattern the period is x = radius * pi = 1 * 3.14159... , and y = 2 , (2.81 -0.81).
The development for the truncated elliptical cone is pretty close. The width at the major ellipse axes is right on at 2.39. The width at the minr axes is sightly off with a value of 2.35. This should be closer to 2.32. The development was create from panles that were inscribed wthin the solid shape. Better results could be achieved by using panels that used an effective value between inscribed and circumscribed elliptical radii.
This was an interesting challenge.