On 26/05/2021 20:12, The Natural Philosopher wrote:
On 26/05/2021 18:01, newshound wrote:
Actually I would not be surprised if washing machines had not done
that, and aero engine efficiency improvement is probably in double
digits over a decade.

Bless!

Quite the ArtStudent aren't you?

Gas turbine efficiency as such us where it was from the get-go - about
37%. Once you have made the transition to high bypass turbofans, that's
pretty much it.


Missing the point. We were not discussing GT thermal efficiency, we're
talking about fuel per passenger mile. Which goes down with each new
Trent (composites and aerodynamics helps too).