[cscottm]

This is a mighty fine question, and Talon Robotics has no idea.
We have built two field specification Airships for our week zero event.
We hope that some of the Minnesota offseason events make use of them, or even as practice fields for our state championship (we brought our field last year too).
Fact remains, we will salvage all the polycarbonate from it, but we are at a bit of a loss in regards to the steel.