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Search: Posts Made By: Stumpy Grinder
Showing results 1 to 12 of 12
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Forum: Spectators Balcony (Spotters Corner)
4th Oct 2017, 22:47
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

1 blade, if the whole fan comes off then the...

1 blade, if the whole fan comes off then the imbalance (and hence vibration) is far less so 1 FBO is worst case in terms of dynamic vibration.


I'm seeing reports from passengers of high...
Forum: Spectators Balcony (Spotters Corner)
4th Oct 2017, 10:30
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

The post fan blade off (FBO) vibration is 2...

The post fan blade off (FBO) vibration is 2 phased, firstly a High Level Short Duration (HLSD) followed by (normally) Low Level Long Duration as the unbalanced engine windmills. All gas turbine and...
Forum: Spectators Balcony (Spotters Corner)
4th Oct 2017, 07:31
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

If it waddles like a duck and goes Quack then...

If it waddles like a duck and goes Quack then it's probably a duck......


That there is a fan blade, of that there can be no doubt.
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 21:26
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

Incorrect, there is an additional flange joint to...

Incorrect, there is an additional flange joint to the front of the compressor drum.
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 08:05
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

It's bolts first for me, if it had been hub then...

It's bolts first for me, if it had been hub then the fan would have lost its drive and slowed down.


So it's a fan - IP drum bolt failure leading to an unloading and extreme imblance of the...
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 02:46
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

Long shot, does the fin camera on an A380 record...

Long shot, does the fin camera on an A380 record live images?


If so I'd pay to see that.
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 01:15
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

This is the GP7200 bolted ring that attatches fan...

This is the GP7200 bolted ring that attatches fan - hub - IP Drum, where all the fasteners have disappeared.

OPen the below image and you can clearly see the fan hub retention nuts and Allen...
Forum: Spectators Balcony (Spotters Corner)
3rd Oct 2017, 00:42
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

Where the heck are all the fasteners on that...

Where the heck are all the fasteners on that flange?

Did this engine have a fan change recently?
Forum: Spectators Balcony (Spotters Corner)
1st Oct 2017, 23:47
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

That's because an electronic system is too slow...

That's because an electronic system is too slow on a small fan engine and red-line/rotor burst would be exceeded in the event of a shaft break, on RR BR series fuel flow is reduced to flameout via a...
Forum: Spectators Balcony (Spotters Corner)
1st Oct 2017, 23:34
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

As have all the BR700 series engines, and it...

As have all the BR700 series engines, and it works.
Forum: Spectators Balcony (Spotters Corner)
1st Oct 2017, 11:26
Replies: 559
Views: 590,463
Posted By Stumpy Grinder

Appears initially that the fan hub has failed.

Appears initially that the fan hub has failed.
Showing results 1 to 12 of 12


 
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