On a bypass
(some air goes through combustion and most of it goes around the engine portion straigh out the back where it mixes with engine exaust making an awsome amount of thrust)
from what I can see all that happens is the rear portion of the shroud moves backward and that is it.
I dont see where air is diverted forward. All I can see that shroud doing is making the bypassed air going out sideways.
Photo © Daniel Werner
Can someone explain this to me.