This episode is a conversation with Dieter Schimanski, the Manager Test & Operations of the European Transonic Windtunnel. In late June of 2011 I had the chance to visit the facility. The episode starts out with a one hour conversation about aerodynamics and the concepts behind the ETW. The rest of the episode is essentially an audio report of the tour I took of the facility. To better grasp the magnitude of the facility, I recommend you take a look at the picture gallery.