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Search: Posts Made By: RatherBeFlying
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Forum: Spectators Balcony (Spotters Corner)
11th Oct 2017, 15:02
Replies: 559
Views: 590,463
Posted By RatherBeFlying

Why not replace pylon?

Why put a good engine on a compromised pylon? Engine and pylon will have to be removed at destination anyway. Then good engine and pylon will have to be reinstalled.

If there's any concern for...
Forum: Spectators Balcony (Spotters Corner)
5th Oct 2017, 19:24
Replies: 559
Views: 590,463
Posted By RatherBeFlying

What failed first?

We know one blade detached from the hub - perhaps more. The rotational forces may have overloaded the flange.

Or the flange failure resulted in blades rubbing the containment ring and initiating...
Forum: Spectators Balcony (Spotters Corner)
4th Oct 2017, 02:42
Replies: 559
Views: 590,463
Posted By RatherBeFlying

Possibly a fan blade, but can't say for sure from...

Possibly a fan blade, but can't say for sure from the available photos. Cowl pieces are the other possibility, some fragments in the vanes look like composite.
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 17:13
Replies: 559
Views: 590,463
Posted By RatherBeFlying

There's a lot of rotational energy in the fan....

There's a lot of rotational energy in the fan. Once the flange failure began its progress, the fan would wobble and remove whatever beside the containment ring that was in the way, mostly cowl.
...
Forum: Spectators Balcony (Spotters Corner)
2nd Oct 2017, 17:22
Replies: 559
Views: 590,463
Posted By RatherBeFlying

I had a look at a GP7200 cutaway. Interestingly...

I had a look at a GP7200 cutaway. Interestingly it seems the first 5 or 6 compressor stages turn with the fan.

The failure seems to be where the fan attaches to its end of the LP shaft.

Let's...
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