lightoutandarmed
31st May 2002, 01:28
...why are jet engines more efficient at hight altitude?
thanks
Checkboard
31st May 2002, 03:57
Hello, lightoutandarmed, welcome to Tech Log!
This subject has been discussed a few times before, so you will find a fairly good technical explanation on the "Why are jet engines more fuel efficient at high altitude? (http://www.pprune.org/forums/showthread.php?s=&threadid=48009&highlight=efficient)" thread.
As well as that, there is an interesting discussion on the "Why don't jets fly higher? (http://www.pprune.org/forums/showthread.php?s=&threadid=10735&highlight=efficient)" thread that you may find useful.