Yes, I believe that it is likely that the PAK-FA will try to fill both roles.

Russia still has a requirement for a heavy interceptor and given the decisions so far it seems
likely funding will someday be reserved for it. It will be ten or twenty years before there is
enough funding for it and it will have to compete with S-400 family SAMS. Russia needs such
interceptors for defending such a large frontier but they cost money. The Mig-31 weighs as much as
four unloaded Mig-29s and the fuel bills for it are shocking.

It will have to have very long range and will most likely (I am guessing here) could take two forms
either that of a low speed, extremely high altitude missile platform or a more costly fighter with
sprint speeds in combat of over mach 3.5! It is slightly possible that such a project could be based
off of the medium and heavy bombers (think T-60 and T-4MS) which will replace the Su-24 and Su-34.

Run a search on the mig project 7.01 to see the next stage above MFI!
-Jonas Weselake-George

forties wrote in message
oups.com...
Thank you. And does it means that russians will produce 2 types of
future a/c: MFI and LFI .. or they are still looking for the right
choice between two concepts to accept in in RAF then?