RE: Rotodyne autogyro
Just if anyone is interested...
Rotodyne used its wing engines to drive compressors behind the engines to provide high pressure air out to the tip jets. Fuel was also passed out to the tips for combustion with this compressed air. Take-off and Landing was performed as a helicopter but the compressors were disengaged from the engines for flight as an autogyro. Speeds in excess of 190 mph which for the time were impressive.
I think an autogyro would be successful however you will need the aft tilt to make it work. Personally i would use only direct control in roll coupled to ailerons on the wings. Pitch by normal elevator only. I forget the link but a chap in australia did build one sucessfuly
Sean