Hi Brendan,
I'm an 04' Purdue Grad. Anyways, there used to be two big corporate internships, and I know the one went wayside my junior year, but is Coca-Cola still doing theirs? As far as big ones doing such activities, I really don't know. Maybe you could get onto some of the fractional companies webpages and try contacting them to see if they offer anything. Honestly, if you have time this summer, I'd work on building some more dual-given time etc. If you're in the area, and it works out, I could offer you some turbine experience if the timing and conditions work out. I'm out of MIE, and feel free to PM me anytime. You need 10-15 posts though before you can do that on this site