Originally Posted by
mgnostic
Will all of the wing ribs have the built up structure? If the ribs were just cut from sheet I would suggest the old RCM wing jig. A wing jig needn't be expensive in money. You will have to do some geometry but you can calculate the amount needed to raise the trailing edge of the outermost rib to get the desired washout. From there you can cut a triangle shaped brace, the length of which is the span of the wing panel. The tip will be 2 degrees high and the root will be at 0 degrees. Your wing spars should help to hold everything in alignment.
Yes, ribs are built up truss except the root and first three. The RCM jig, as described, wouldn't work so good for truss style ribs imo. But, the concept is adaptable by allowing the spars to do the job intended for the rods. A simple shim on the jig at the tip of the aft spar will set the washout. I'd forgotten about the RCM jig and, while reviewing your comment, remembered reading about it some time ago. Thank you for jogging my memory and offering your insight. So, it's off to the drawing board to design a universal wing jig based on the RCM concept.
Hank