Originally Posted by
Dream Buster
Feathered,
At the risk of thread drift, I understood that the B787 will use bleed air ONLY for de / anti icing. BTW the real reason for no longer using bleed air for air conditioning is NOT fuel economy.
Does anybody know the facts on this? Apologies for any drift caused.
DB
787 doesn't use bleed air for
anything - because there isn't any. The Trent 1000 is a bleedless engine.
Must admit I did a double take when I was first told that, but it is correct.
What the precise design reasons are for it I don't know, but clearly someone thought it was a benefit. Plenty of people doubt it will have any effect on fuel economy, so maybe the alternative electrical systems are hoped to be easier / cheaper to build & maintain.