Okay, I'll ask. In the b/w photo of the engine being run -- what's the stream of smoke/water/whatever being emitted by the little tub at the front of the photo and into the tunnel? I doubt that it's a smoke trail to look for bumps in the aero, and if it's cooling water -- why not all around the engine?
Otherwise -- geez, what a project. Thanks for the photos and updates. We're all watching - with interest and fascination.