High Disk Loading on V-22/Similar Concept from Another Company
Regarding the statement in the article of the V-22 attaining VTOL and high speed, that's true, but the V-22 has very high disk loading, and so is limited in its gross weight. A large, single rotor would have much lower disk loading, and allow higher gross weights for the same power.
For a small bit of self-promotion, I work for a company that has a similar concept. We are aware of the Fairey Rotodyne and the problem of noise with tip jets, so we are using a more conventional gearbox & driveshaft system.
http://www.cartercopters.com/heliplane_overview.html