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Search: Posts Made By: DERG
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Forum: Tech Log
11th Dec 2010, 09:41
Replies: 130
Views: 37,557
Posted By DERG

Rolls Royce Indianapolis USA

Ventus!

Thank you, I was getting lonely here.

I have a pal over in the USA and he told me that Rolls Royce USA have had qulaity and endurance problems with products made there.

Your...
Forum: Tech Log
10th Dec 2010, 15:06
Replies: 130
Views: 37,557
Posted By DERG

Interview with Captain David Evans

http://www.aerosocietychannel.com/aerospace-insight/2010/12/exclusive-qantas-qf32-flight-from-the-cockpit/
Forum: Tech Log
9th Dec 2010, 16:57
Replies: 130
Views: 37,557
Posted By DERG

ATSB report

http://www.atsb.gov.au/media/2888854/ao-2010-089%20preliminary%20report.pdf
Forum: Tech Log
9th Dec 2010, 08:00
Replies: 130
Views: 37,557
Posted By DERG

More Questions

Thanks Sooty yes. No need to be rude.

I just cannot see the offset (eccentric) bore in the pipe being a design feature. If it was a design feature it was a serious error. No consultant/check...
Forum: Tech Log
8th Dec 2010, 18:38
Replies: 130
Views: 37,557
Posted By DERG

Another advice

http://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/safo/all_safos/media/2010/SAFO10021.pdf

At this point the RR case has collapsed there are so many flaws in this...
Forum: Tech Log
6th Dec 2010, 17:15
Replies: 130
Views: 37,557
Posted By DERG

Mr John Page

Dept Eng Uni of N S Wales Australia
Forum: Tech Log
6th Dec 2010, 17:13
Replies: 130
Views: 37,557
Posted By DERG

Seeking Truth

Bear...there is a guy called Page who I call a true vocational professional engineer....see:

Page (http://www.mech.unsw.edu.au/content/staff/Page.cfm?ss=4)

I see RR take total responsibility...
Forum: Tech Log
6th Dec 2010, 06:17
Replies: 130
Views: 37,557
Posted By DERG

Conjecture

Please don't make this more complicated than it is. This failure was common in the early part of the 20th century. This is VERY basic mechanical engineering. A 20 yr old second year Mech Eng...
Forum: Tech Log
5th Dec 2010, 12:10
Replies: 130
Views: 37,557
Posted By DERG

CAAD

Well I call it kerosine mainly because of the smell...fuel..not definitive enough for me.

The disc thingy :E was exploded out because the oil/air was on fire inside the bearing case.

Now you...
Forum: Tech Log
5th Dec 2010, 05:10
Replies: 130
Views: 37,557
Posted By DERG

BARIT..glad you enjoyed my post!

Look up "JP8" and you will realise that commercial engines and military engines are two diff animals. If you think the Trent can handle ANY fuel you are mistaken. The way this Trent is designed it...
Forum: Tech Log
5th Dec 2010, 04:54
Replies: 130
Views: 37,557
Posted By DERG

CAAD

"Yes, I can visualise the oil squirting out of the pipe fitting, but how does the fuel arrive in the bearing housing?"

Because RR use a patented oil bearing case with only one scavenge line. ...
Forum: Tech Log
4th Dec 2010, 12:02
Replies: 130
Views: 37,557
Posted By DERG

How does oil mix with kero?

Squirts out the fractured oil pipe. Under pressure.
Forum: Tech Log
4th Dec 2010, 12:00
Replies: 130
Views: 37,557
Posted By DERG

Bear and Caad

Caad...amzn how simple the faults turn out to be. Just poor part manuafacture,

Bear
As far as I understand the guy who designed this bearing was sure they could not mess up the manufacture.
...
Forum: Tech Log
4th Dec 2010, 09:58
Replies: 130
Views: 37,557
Posted By DERG

Bearfoil..

Yes, excuse me..got my Toyota Corolla stuck in the snow..four dachshunds..irate wife..and a couple of pet huskies causing distress to all..finally got the thing out and all occupants and home.:ok:
...
Forum: Tech Log
4th Dec 2010, 06:41
Replies: 130
Views: 37,557
Posted By DERG

The photograph

I am familiar with material failures as any trained engineer should be and moreover I am a free agent so I can comment without prejudice to my financial income.

The insitu postion of the pipe...
Forum: Tech Log
3rd Dec 2010, 15:48
Replies: 130
Views: 37,557
Posted By DERG

Manufactured where?

The fact is there is only a handful of places where this technology exists.

The one I am familiar with is the reserch dept. run by Dr. Magnus Hasselqvist of the company Siemens in the Swedish...
Forum: Tech Log
3rd Dec 2010, 11:16
Replies: 130
Views: 37,557
Posted By DERG

Bearfoil...

Good point but I don't agree in this case. In support of your view I would BAN all mobile telephone devices from the assembly areas of aircraft production.

A worrying note was sent out by...
Forum: Tech Log
2nd Dec 2010, 14:59
Replies: 130
Views: 37,557
Posted By DERG

Safety Recommendation Ao-2010-089-ar-012

NTSB advice. see above

Miele Washing Machines need to teach Rolls Roycle how to counter bore fluid lines in nickel steel.

God knows what other parts this particular workshop flung out. ...
Forum: Tech Log
16th Nov 2010, 08:48
Replies: 130
Views: 37,557
Posted By DERG

Hiya Rudder

Thanks for the info.

Not sure if that helps me sleep at night though!
Forum: Tech Log
16th Nov 2010, 07:19
Replies: 130
Views: 37,557
Posted By DERG

Are you serious?

Maybe because the little tubes in that system were intact, moreover maybe the little wires to the pumps and valves were not severed by a whacking great 25kg lump that was exploded out of the engine...
Forum: Tech Log
15th Nov 2010, 15:44
Replies: 130
Views: 37,557
Posted By DERG

Trent Design Issues

That much is clear: there ARE design issues. I am ALMOST certain that engine performance anomalies were evident before this event occurred. The way this aircraft was punted out from London only to...
Forum: Tech Log
15th Nov 2010, 11:35
Replies: 130
Views: 37,557
Posted By DERG

"But NOT a safety issue."

Of course it's a safety issue. If an engine is not cooling properly it evaporates the oil, dries up the bearing and bingo the engine explodes.
The temperature rise is not linear. This happens...
Forum: Tech Log
14th Nov 2010, 08:16
Replies: 130
Views: 37,557
Posted By DERG

No connection to 74 engines. Qantas push 'em...

No connection to 74 engines. Qantas push 'em hard because of the route lengths and TO weights. Always were hard on engines.

RR knew of a fault with T970s back in summer 2009. They made a...
Forum: Tech Log
13th Nov 2010, 07:57
Replies: 130
Views: 37,557
Posted By DERG

Now we are getting somewhere...

Thanks for the repiles
Forum: Tech Log
12th Nov 2010, 17:26
Replies: 130
Views: 37,557
Posted By DERG

Hiya Bolty

See if you can dig up something on a Shell turbine oil called ASTO 560.

This oil coked up another RR Trent around 2002.
see:
...
Forum: Tech Log
11th Nov 2010, 13:52
Replies: 130
Views: 37,557
Posted By DERG

Volcano Dust

If this fault turns out that it is volcano dust related it is bonanza time :E for technicians, loads of $$! :E
Forum: Tech Log
9th Nov 2010, 12:19
Replies: 130
Views: 37,557
Posted By DERG

Bizman

At the outset i have to say that I have watched Qantas and this 380 saga closely and at times my heart went out to them. Australia has had rotten luck. Of course Qantas is not that big an outfit and...
Forum: Tech Log
9th Nov 2010, 07:43
Replies: 130
Views: 37,557
Posted By DERG

Wink Trent 972

This engine is only used on the Qantas machines. So over the four units an extra 8,000lbs of thrust is available. Reason: 15 hr flight to Melbourne at max weights.

Would suggest a harmonic...
Showing results 1 to 28 of 28


 
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