The burning areas are the carbon/epoxy cascades, part of the thrust reverser.
The inlet, fan cowls, most of the thrust reversers all departed. Not good. This is not supposed to happen in a fan blade out event. Though its not clear what part of the engine failed.
I don't think it was a fan blade or compressor cutting loose . Technically all that stuff that's missing can depart and its still classed as a contained failure. But I agree not good.... But could have been much much worse.
They have a colossal bypass so the core is only about the size of that black dome on the front of the fan.
I once saw a video of the test of the titanium ring around the main fan simulating a fan blade failure. The ring visibly moved and hence although it has apparently done its job and contained the fan blade that event may have disturbed the cowling enough to allow air in and rip it off.
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To be honest I would call that a failure but colossal success nothing hit the aircraft.
Although I bet the crew are happy it happened just after departure and not in the middle of a 180 mins ETOPS segment.
I love watching the engine tests. The icing tests are not as spectacular as the fan blade failures but the abuse they can put up with and still produce power is amazing.
An engineering success, I think. Nothing is 100% reliable and this was one of the worst kind of failures for a jet engine and it ended without any injury.
Brad Waybright
The more you know, the more you know you don't know.
They pretty much always do come off though. And if they didn't the shear bolts would go and the whole pod would come off due to vortex shedding vibration.
As long as a blade doesn't come out and bang through the hull pretty much every pilot would count it as a success.
Well there is that 'band' of Kevlar that they wrap the fuselage with, inline with the primary fan wheel of the engines. That's why there's always at least one missing window (I hate it when I get stuck in the 'windowless' seat).
They do that on turboprops and that's for ice coming off the blades. And its like a shotgun going off when it hits the plane.
And if the compressor disk goes it comes out supersonic and goes straight through the hull. Kevlar or not. I think you actually mean the compressor disk not the Fan.
There was a 737-800 that happened to in 2018 I think.