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Search: Posts Made By: DevX
Showing results 1 to 35 of 85
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Forum: Passengers & SLF (Self Loading Freight)
11th Oct 2015, 20:03
Replies: 19
Views: 6,883
Posted By DevX

Dang! No tools? The missus will have to stay at...

Dang! No tools? The missus will have to stay at home then. :}
Forum: Tech Log
4th Oct 2015, 20:23
Replies: 23
Views: 8,191
Posted By DevX

Barit1, I've just read your post again, and I...

Barit1, I've just read your post again, and I quote: "........governors, one on each shaft, and either one may "take charge" to keep things within limits."
I think I misunderstood your terminology,...
Forum: Spectators Balcony (Spotters Corner)
29th Sep 2015, 21:34
Replies: 63
Views: 25,308
Posted By DevX

Another for the 787, 'Doomliner'.

Another for the 787, 'Doomliner'.
Forum: Rumours & News
23rd Sep 2015, 09:12
Replies: 746
Views: 791,007
Posted By DevX

Good spot N1 Vibes, and your explanation is bob...

Good spot N1 Vibes, and your explanation is bob on.
I remember during the development phase of those old 524's, special measures were taken to avoid re circulation within the test beds for exactly...
Forum: Rumours & News
19th Sep 2015, 20:55
Replies: 746
Views: 791,007
Posted By DevX

I would have thought they wanted a meeting with...

I would have thought they wanted a meeting with GE. :}
Forum: Tech Log
19th Sep 2015, 20:53
Replies: 7
Views: 3,283
Posted By DevX

Simply paint the glare shield white, job sorted!...

Simply paint the glare shield white, job sorted! :ok:
Forum: Rumours & News
17th Sep 2015, 19:56
Replies: 22
Views: 17,023
Posted By DevX

Shouldn't you wing bedecked type people be using...

Shouldn't you wing bedecked type people be using the correct terminology here? I thought thudding, thumping and backfiring were exclusive terms for the ill informed gutter press.
It's a 'surge'...
Forum: Rumours & News
13th Sep 2015, 04:35
Replies: 746
Views: 791,007
Posted By DevX

I'm well aware of the flash point of kero Ka-2b,...

I'm well aware of the flash point of kero Ka-2b, but that's not to say that it's guaranteed to combust every time at that point. In my personal experience of engine failures conditions have to be...
Forum: Rumours & News
12th Sep 2015, 18:18
Replies: 746
Views: 791,007
Posted By DevX

Ka-2b pilot, you said, and I quote: ".....which...

Ka-2b pilot, you said, and I quote: ".....which caused a lot of fuel to leak out from somewhere, probably onto the ground where it then started to vaporise and subsequently ignited".
I was simply...
Forum: Rumours & News
12th Sep 2015, 16:31
Replies: 746
Views: 791,007
Posted By DevX

Great pics, thanks. :ok:

Great pics, thanks. :ok:
Forum: Rumours & News
12th Sep 2015, 16:16
Replies: 746
Views: 791,007
Posted By DevX

Ka-2b pilot, kerosene's vapour is not flammable...

Ka-2b pilot, kerosene's vapour is not flammable like petrol's is. ;)

dsc810, many years ago we had a reheated Spey let go of it's HP disc and it exited at 7-0-clock, chopped through the test...
Forum: Tech Log
11th Sep 2015, 22:53
Replies: 23
Views: 8,191
Posted By DevX

I agree with musthafagander, the FMU/HMU is...

I agree with musthafagander, the FMU/HMU is controlled by the EEC (Trent engines), so nothing to do with governors on shafts. ;)
Forum: Rumours & News
10th Sep 2015, 22:20
Replies: 746
Views: 791,007
Posted By DevX

SeenItAll, surely the report means HP Turbine,...

SeenItAll, surely the report means HP Turbine, not HP compressor? In over 30 years of engine development test I've yet to see an uncontained HP compressor failure. In fact the only uncontained...
Forum: Tech Log
13th Jun 2015, 21:41
Replies: 6
Views: 2,746
Posted By DevX

Quote: "Gears are complicated, fallible lumps of...

Quote: "Gears are complicated, fallible lumps of suspect metal, with thousands of stress points..."

Strange then that every gas turbine has a gear box and an oil pump, all full of gears! :hmm:
...
Forum: Tech Log
8th May 2015, 12:06
Replies: 26
Views: 6,880
Posted By DevX

Quote by vilas: "The engines may surge and stall....

Quote by vilas: "The engines may surge and stall. It's futile discussion."

It's t'other way round. The airflow through the engine will be disrupted in severe side slip causing compressor stall...
Forum: Tech Log
12th Apr 2015, 19:06
Replies: 34
Views: 11,517
Posted By DevX

AKA the 'Doomliner'. :}

AKA the 'Doomliner'. :}
Forum: Tech Log
3rd Apr 2015, 19:36
Replies: 23
Views: 6,107
Posted By DevX

Not current on aircraft type, but current on all...

Not current on aircraft type, but current on all Trent engine types. :ok:
Forum: Tech Log
3rd Apr 2015, 15:59
Replies: 23
Views: 6,107
Posted By DevX

1.5T difference sounds a wee bit excessive purely...

1.5T difference sounds a wee bit excessive purely for T800 performance deterioration, unless there's a fuel leak of course.

This ESA PAD refers to one possible problem: ...
Forum: Tech Log
23rd Sep 2014, 11:52
Replies: 51
Views: 54,229
Posted By DevX

Larger two shaft engines are more prone to 'rotor...

Larger two shaft engines are more prone to 'rotor bow' than 3 shaft.
Read P&W, GE vs. R-R, but that's not to say that R-R engines don't also suffer sometimes.
Of course if there's a good blow on...
Forum: Tech Log
23rd Sep 2014, 11:42
Replies: 7
Views: 3,561
Posted By DevX

"It very well could be that the inlet was shiny...

"It very well could be that the inlet was shiny from thousands of hours of being polished by rain, bugs, and rampers' sweat. The difference between the two engines in question was enough to catch my...
Forum: Tech Log
22nd Sep 2014, 19:24
Replies: 7
Views: 3,561
Posted By DevX

The dull finish I've observed on intakes seems to...

The dull finish I've observed on intakes seems to be due to oxidisation. Thousands of miles at cruise will take the shine off most things! :}
Forum: Tech Log
4th Sep 2014, 14:44
Replies: 6
Views: 1,658
Posted By DevX

I did apologise in my post for making a non...

I did apologise in my post for making a non contributory answer, so why your post? You clearly don't have anything useful to add either. :hmm:
Forum: Tech Log
3rd Sep 2014, 17:01
Replies: 55
Views: 20,518
Posted By DevX

Nicely explained Hoppy, and then there are the...

Nicely explained Hoppy, and then there are the engines fitted with an electric starter/generator, known as a VFSG, or Variable Frequency Starter Generator. The GenEx and Trent 1000 engines use these...
Forum: Tech Log
3rd Sep 2014, 16:20
Replies: 6
Views: 1,658
Posted By DevX

Ok, with it now, but in some aircraft those...

Ok, with it now, but in some aircraft those smells would be impossible to detect due to the overpowering stench of burnt engine oil! :E

Apologies for the answer you didn't want, but I couldn't...
Forum: Tech Log
3rd Sep 2014, 14:03
Replies: 6
Views: 1,658
Posted By DevX

Smoke in the cockpit and cabin odour are two...

Smoke in the cockpit and cabin odour are two different things. Which one in particular are you referring to?
Forum: Tech Log
2nd Sep 2014, 14:10
Replies: 55
Views: 20,518
Posted By DevX

Here's a Trent 700 starter motor, IDG, anti icing...

Here's a Trent 700 starter motor, IDG, anti icing valve and external gearbox:
http://www.pprune.org/rumours-news/248980-emirates-a330-fan-blade-dxb-18-oct-4.html#post2944866

The starter motor is...
Forum: Tech Log
1st Sep 2014, 20:21
Replies: 55
Views: 20,518
Posted By DevX

TurbineD, you said, "As rotor speeds continue to...

TurbineD, you said, "As rotor speeds continue to increase the starter is disengaged......"

If I may elaborate a little to make it a bit clearer for AF330: The start air valve, which is adjacent...
Forum: Tech Log
31st Aug 2014, 12:02
Replies: 55
Views: 20,518
Posted By DevX

AF330, this could also be a good source of...

AF330, this could also be a good source of information for you: http://www.valentiniweb.com/piermo/meccanica/mat/Rolls%20Royce%20-%20The%20Jet%20Engine.pdf
Forum: Tech Log
29th Aug 2014, 10:31
Replies: 40
Views: 13,593
Posted By DevX

QUOTE: Just read that RR is developing a large...

QUOTE:
Just read that RR is developing a large turbine engine with variable pitch fan blades, may be to compensate for the extremely large fan blades we are seeing and the need to keep spool time...
Forum: Tech Log
16th Aug 2014, 19:55
Replies: 22
Views: 4,825
Posted By DevX

I thought that 'squat' switches were now used on...

I thought that 'squat' switches were now used on the undercarriage which prevents reverse thrust being operative whilst airborne, irrespective of where the levers are. :confused:
Forum: Tech Log
8th Aug 2014, 10:10
Replies: 28
Views: 4,419
Posted By DevX

I concur with gysbreght, it's more likely to be...

I concur with gysbreght, it's more likely to be (but not guaranteed) an instro fault, especially if all other engine parameters are reading ok and there's no obvious loss of power.

Re. the...
Forum: Tech Log
8th Aug 2014, 06:52
Replies: 28
Views: 4,419
Posted By DevX

More info wouldn't go amiss, which engine, which...

More info wouldn't go amiss, which engine, which aircraft, weather conditions?
Forum: Spectators Balcony (Spotters Corner)
6th Aug 2014, 11:00
Replies: 58
Views: 23,426
Posted By DevX

QUOTE: "Engine going to be replaced If it...

QUOTE: "Engine going to be replaced

If it should only turn out to be an oil pump problem or a leaking oil tube then there'll be no need to change the engine. Swapping out engines is usually a last...
Forum: Rumours & News
2nd Aug 2014, 13:03
Replies: 15
Views: 15,933
Posted By DevX

And that's why I said shouldn't penetrate the fan...

And that's why I said shouldn't penetrate the fan casing. We all know there are extraordinary exceptions that happen in the real world outside of certification requirements. :ugh:
Forum: Rumours & News
1st Aug 2014, 12:23
Replies: 15
Views: 15,933
Posted By DevX

QUOTE: "The only way I know of that a birdstrike...

QUOTE: "The only way I know of that a birdstrike can cause an engine fire is if it causes blade(s) separation, which then goes through the casing and severs a fuel or hydraulic line (hydraulic fluid...
Showing results 1 to 35 of 85
 
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