http://autospeed.com.au/cms/title_The-Fusion-Intercooler/A_110772/article.html
Here’s an interesting article on phase change intercooling… basically you take a regular air to water type cooler, fill the water passages full of melted wax, cap off the (wax) ports, and you’re done. The idea is that it takes a significant amount of heat energy to melt the wax, and while that melting is going on the temperature of the wax stays constant at about 120 F. You won’t get as dense a charge as you would from intercooling with dry ice, but there is a whole lot less maintenance involved.
You’d have to size the thermal mass of the wax so you could have it last for a burnout, staging, and a pass… interesting design problem.