"Steve R." wrote in
:

Hi!

Am I getting this anywhere near right? I hope this makes sense.
Thanks for
any replies! :-)

Fly Safe,
Steve R.





Sorry to wade into this discussion without a bit more prep but having read
your reply to the post something occurred to me that might help.

The way turbine engines work mean that as the air gets colder (perhaps due
to low surface temp or climbing to higher alt for example) they become more
efficient and generate more power for a given power setting. The 'laymans'
(i.e. my!) logic for this is that since turbines work by heating air, the
cooler the air at the intake, the more the air can be heated by the engine
thus producing greater thrust.

I suspect that the reason for the lower fuel burn is due to this effect,
rather than the lower drag.

toad.