The Tilt Rotor has some scaleability issues too doesn't it?
OGE Hover performance for the V-22 remains a limiting factor in helicopter mode....and is quite modest considering the amount of horsepower the engines are capable for producing.
That comes from the compromise that must be made when combining helicopter and airplane performance using Prop-Rotors.
That being the Power Demand that is generated by the Rotor Design itself....hover performance demands huge amounts of power well in excess of that needed for cruise performance and that has been the problem for the Tilt Rotor in the past. The Bell Aircraft was eighteen months behind due to reworking the aircraft to accept 1800 horsepower engines as I seem to remember when preparing for the Demonstration Flights at Fort Rucker back in the Eighties.
The two aircraft used for that "competition" were not production aircraft but were instead technology demonstrators. The Army saw the ABC as having more potential as shown by their decision not to get involved in the Tilt Rotor Contract as did the Navy/USMC and USAF.
Which seems to be the bigger problem for the 97....stresses and weight issues in the Rotor Head/Mast or thrust being produced by the Pusher Prop?
The goal is 265 Knots Dash Speed is it not?