Thanks for the input with the deflector. That was just an oversized version of the Ankara-Deflector from the military Tunnel in Turkey, just for the first tests. We try several versions to find the best solution for this enviroment. Cheers B
Not at the bottom and not at the top. We have the fan there, where a regular formula one windtunnel has it, opposite to the test section. Gives a max distance upstream and downstream to the flight chamber. Cheers B