At Aircraft info i saw that there will be 2 engines available for A380: The RR and the Engine Alliance PW+GE. Is this only for the A380 or also for boeing in the future?
The Engine Alliance GP7000 can
be used for 747 derrivatives and the A380 only
. That was the cachet of the EU agreement for the General Electric/Pratt Whittney partnership. Boeing wanted to use the GP7000 for the 767-400ERX, but after the concept was dropped, Boeing stopped lobying for its use in this way.
Or maybe a new Russian engine could be given a chance?
Nope, not a snowball's chance in hell. Perm and others build some decent engines, but I doubt they could throw their best against the might of GE
or Rolls Royce. Where would they have maintenance bases, where is their support infastructure, how would they distribute spares?
Looking at A380 and its weight issues, its low speed (to make range and payload targets), and its less than target overall performance (recognising there is still time to go) future variants of the 744 platform may become more attractive
A direct 1:1 or slight growth of the 744 might please many of the airlines who are hesitant to replace a 744 with another 744 and are worried about the risk of moving up to the A380-800. Also, a 747-Adv would look much better (on paper) than a A380-700.