CEFOSKEY/IFMU, I gotta get me one of those!
Judging by trees/fence: Is that a full size mockup?
----
Dave, i've been quietly developing my own calc for rotor performance (based on Blade Element Momemtum Theory & Vortex Panel Method - but only capable of hover currently). I'm not convinced about the rotors not interfering in the intermeshing zone. For a given segment of air you are potentially doubling the lifting force, so that in practice induced velocity in this region will go up to reestablish stream function pressure equilibrium. Induced velocity will be far from uniform during hover, which will reduce benefit of greater rotor area.
Besides, my point still stands: During cruise the retreating side will still become unloaded - this is a limitation of stall BVI from vortex shedding. So intermeshing still needs a high hinge offset to work.
As long as ideas are kept practical, i have no problem with technical challenges. A good idea should be able to survive on its merits - X2 is a good idea...
