Fan-in-wing designs enclose all hover components in an aerodynamic way in cruise flight and therefore are likely to fulfill the promise for an efficient cruise flight.
The Ray design uses tilt-ducts attached to the stabilator far behind the center of gravity for a thrust-vectoring control around the lateral axis. This enables perfect control of the angle of attack in slow flight and especially in transition.
The Ray aircraft can take off and land vertically. It needs no runway - like a helicopter.
In comparison to near future helicopters the Ray has the following properties:
Lower price per service
Less noise & vibrations -inside & outside
Lower fuel consumption
The first series of Ray aircraft is designed for 4 passengers and one pilot.
The lift for vertical take off and landing is generated by the four wing-fans. For cruise flight the wings get closed. The Ray aircraft is as independent as a helicopter (=no runway needed) and almost as economic as a conventional aircraft.
This results in an extremly independent aircraft with a fast cruise speed and a long range for an acceptable price.