Originally Posted by
Concours77
https://dynaimage.cdn.cnn.com/cnn/li...ef66c7bbdf.jpg
From the peeling forward of the lapped inner skin of the inlet and the clean departure of the honeycomb in circumferential and crisp fashion, I would think the structures were “blown out” forward. That would make a blade separation a result of, and not the cause of the severe damage....
Originally Posted by
DaveReidUK
How does the evidence of fatigue at the root of the departed blade fit in with that scenario ?
Also, Concours77, what do you think could "blow out" the front of the engine in such a way that it only damages part of the cowling, which is a relatively weak material, but then is also powerful enough to snap off a fan blade, which is very strong indeed unless there already is a fatigue crack.
The only think I know which "blows out" of the front of the engine would be a surge, but these rarely damage the engine, although they can be spectacular. I can't imagine that one would ever blow out a fan blade.
Bernd