May 13th, 2015, 03:30
In the original photo, there are two red struts. One is short and horizontal, and holds the wing at the folded angle as you say. The other is vertical, and is on the folded portion holding the wing segments, presumably to add the strength missing without being latched to the fixed portion that has the fixed upright. What I'm saying is that the fixed upright on the model is depicted on the folding portion instead of the fixed portion as shown in the photo.