I get the image of that Iron Eagle, arm out the window and all, did you back it up with a propellor on the same motor? Maybe 3x's the dia of the fan? For control purposes? My idea stems from an unusal stator design which might be best described as a turbine compressor wheel (model) stretched in depth or height to the same dia. The working turbine directly behind would would only occupy the area outlet of the conical stator in front of it. Low pressure behind the turbine would be created by a simple diffuser cone. Wow the more I type it out loud the more like a traditional jet turbine it sounds.