I think the unstarts were one of the more serious problems, I think...Thanks for your feed back. By the way I was in the hanger and the smiulator at dryden.
I just happen to have a front row seat on this subject. I just want to share with you that I have been in the hanger with this hot bird(kindly speaking) and also in the actual sr71 flight simulator (at dryden) that all space shuttle pilots have to take and pass.
@eightlines14 Its called a dam, used by nasa for research , also They would fit nose with composites for hot flights.