Interesting. In all these years I've not pondered the differential pressure across the sides of the intake.
They were perhaps still in the climb at 30k' before maximum ram air.
Given the 777 gulps a tonne of air a second in the cruise, I'd not be surprised if this wasn't a major factor.
So, all those pretty girls standing in engines for promotional photos have heel protectors?.
Last edited by Loose rivets; 29th Aug 2016 at 11:35.