Hey woketman,
Since you work in the area where they do the Space Shuttle external tank, I thought I would ask you a question. A few weeks ago I got in touch with a couple of people at Marshall and asked them if they would check with the engineers to see if they have considered laminating Kevlar cloth over the tank insulation in the critical areas to keep it from coming off, with wrinkles for expansion and contraction, if necessary. I haven't heard back from them. What do you think of the idea? Could it work, and if not why not?