How feasible to make a low-pressure wind tunnel for testing this? Doesn't need to be quite on the scale of the full hypobaric chamber.
Something like a tube of metal with a glass or polycarbonate window in it, in a circuit with a fan somewhere in it? Have a bulge in the viewing section large enough to put LOHAN. I hear RVK do some pretty neat inline ventilation fans with a quite formidable throughput. The 5" one I've played with creates a veritable hurricane at normal atmospheric pressures. Failing that, see if any model flyers have ducted fans you can borrow?
Add a variac (or if you're cheap, a dimmer switch) for adjustability in the case of the RVK. Standard speed controller if it's the model aeroplane ducted fan. Use stress sensors on the model mounts to see if there's any lift/control when the surfaces are moved? Perhaps use a smaller section made to be shaped like a part of LOHAN, if you can't fit it all in the tube at once.
But mostly, use a variac for the steampunk factor.