Originally Posted by
tdracer
First off, both the GP7000 and the Trent 900 were pretty much point designs for the A380 and are not really optimum for any of the big twins.
That's an interesting point, and clearly true in the case of those engines.
But there's no fundamental reason why an engine, or at least an engine family, can't be targeted at both big twins and 4-holers - the PW4000 and CF6 have done pretty well in both markets, for example, even arguably the GEnx.
The various members of the Trent series, on the other hand, are more akin to distant cousins than siblings.
