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Search: Posts Made By: Stumpy Grinder
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Forum: Tech Log
8th Dec 2021, 17:03
Replies: 1
Views: 961
Posted By Stumpy Grinder

737 MAx Approved Fuels

Anyone have the AFM for 737MAX, need to know the approved fuels list.

TIA
Forum: Rumours & News
17th Apr 2018, 22:08
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

LOL "considered to have" infinite energy and...

LOL

"considered to have" infinite energy and I retracted the explosion hypothesis, do keep up.

I apologise to BluSdUp if English is not your first language.
Forum: Rumours & News
17th Apr 2018, 21:56
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

Yes, indeed.

Yes, indeed.
Forum: Rumours & News
17th Apr 2018, 21:48
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

....and we'd call it an A340-200/300..........

....and we'd call it an A340-200/300..........
Forum: Rumours & News
17th Apr 2018, 21:41
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

Incorrect, a turbine blade release is considered...

Incorrect, a turbine blade release is considered as having infinite energy and is not contained - see Qantas QF32 A380 as an example. For cert compliance you have to show that no catastrophic event...
Forum: Rumours & News
17th Apr 2018, 21:33
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

Want to correct what I said above, I was...

Want to correct what I said above, I was comparing the wrong pictures, the failure effect does indeed look similar.

Any idea what was concluded on the previous incident? How did CFM address the...
Forum: Rumours & News
17th Apr 2018, 21:18
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

I checked, I'm not convinced that it's the same...

I checked, I'm not convinced that it's the same failure. My rationale (and I accept it is early days and may change as the facts change) massive damage to the inlet forward of the fan (blades go...
Forum: Rumours & News
17th Apr 2018, 21:08
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

My apologies for the mis-understanding, I'll...

My apologies for the mis-understanding, I'll check it out and get back to you.
Forum: Rumours & News
17th Apr 2018, 21:03
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

If you mean the A380 incident then you're...

If you mean the A380 incident then you're incorrect, the fan departed company from the hub in that instance.
Forum: Rumours & News
17th Apr 2018, 21:02
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

The broken window position seems odd, 4 rows...

The broken window position seems odd, 4 rows behind the overwing emergency exit, adjacent to trailing edge????
Forum: Rumours & News
17th Apr 2018, 20:44
Replies: 466
Views: 526,131
Posted By Stumpy Grinder

Very curious, fan looks intact (albeit from poor...

Very curious, fan looks intact (albeit from poor images) I'm sad to say that my first instinct is an explosion of some kind.
Forum: Spectators Balcony (Spotters Corner)
26th Oct 2017, 23:55
Replies: 7
Views: 3,770
Posted By Stumpy Grinder

Program is in serious fiscal trouble, hearing on...

Program is in serious fiscal trouble, hearing on the grapevine about hundreds of lay-offs over last 6 weeks, rumours of 2 hrs notice, don't come back after lunch diktats.
Forum: Rumours & News
9th Oct 2017, 03:07
Replies: 304
Views: 165,264
Posted By Stumpy Grinder

Half the story, modules are manufactured in USA...

Half the story, modules are manufactured in USA but C Series GTF engine is assembled in Mirabel Quebec.
Forum: Spectators Balcony (Spotters Corner)
4th Oct 2017, 22:47
Replies: 559
Views: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
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: 590,086
Posted By Stumpy Grinder

Appears initially that the fan hub has failed.

Appears initially that the fan hub has failed.
Showing results 1 to 25 of 25


 
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