So for the C929 and the C939, what is COMAC going to do to make them more competitive with Airbus and Boeing planes that are going to be flying in the same period? The C919 is already lagging behind in performance compared to similar narrow body passenger jets of today.
And in the 2030s and 2040s, it's expected that Airbus and Boeing are going to be making some major design changes to the traditional passenger jet design in a bid to improve fuel efficiency and performance, from next generation engine designs like open prop engines, to major design changes to the wings and air frame like truss-braced wings, blended body designs, foldable wings etc etc- some of this may or may not work out, but it could be likely be the case that in the 2040s, simply building a larger traditional wide body passenger jet isn't going to cut it.
Is there any plans for more radical new technology being developed to be integrated onto the C939, or is it just going to be a larger but still traditional widebody with minor iterative improvements over the C929?