The problem as I see it from my fluid dynamics days, is getting something like laminar flow in such a short distance. First, you would have to have the same size opening as chamber size (or larger) Remember that fans have to have frames and motors and that can account for up to 50% of their area. Once you have the air intake, you need to clean it up. This can be done with a honeycomb lattice work but once again you have the area trouble.
It is still hurricane season, just park somewhere with a hurricane and video the tufts from a safe location.
