tag:blogger.com,1999:blog-8118460937928958757.post4802120204922994453..comments2024-01-17T13:23:35.896-05:00Comments on aeroturbopower: The Qantas A380 engine failure - a disaster for Rolls Royce?Unknownnoreply@blogger.comBlogger13125tag:blogger.com,1999:blog-8118460937928958757.post-58140874082224454552010-11-12T04:16:57.794-05:002010-11-12T04:16:57.794-05:00The Rolls-Royce Trent 900 engine is a very nice co...The Rolls-Royce Trent 900 engine is a very nice complex machinery with triple shaft arrangement. Lubrication on a single shaft jet engine is already complex enough with the need for oil scavenging before it goes out and combusts, causing overheating and pollution.<br /><a href="http://www.financemetrics.com/rolls-royce-engine-issue-raises-questions/" rel="nofollow">Rolls Royce engine failure</a>Paraghttps://www.blogger.com/profile/06252372041858393646noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-70687537755480140442010-11-05T12:21:04.782-04:002010-11-05T12:21:04.782-04:00I am really sorry, but it deos not make any sense ...I am really sorry, but it deos not make any sense to speculate how long anything that maybe has to be changed in the design would take a this time. Let's wait a few days...aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-80913707639914474512010-11-05T11:40:03.130-04:002010-11-05T11:40:03.130-04:00Could we assume that it is the HTP of the IPT that...Could we assume that it is the HTP of the IPT that was the cause of the failure.<br /><br /> Now what. Does that save alot of investigation...does it require a new HTP or IPT...repaired, restored, refortified, replaced?<br /><br /> Does this take alot of time and engineering.....<br /><br /> Would inspections, software and replacement work..and does that have to be redesigned.<br /><br /> In your example you say it usually lies somewhere between inspection and redesign....if so, how complicated, difficult, time consuming is that?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-25751975336817528302010-11-05T11:29:38.996-04:002010-11-05T11:29:38.996-04:00How is it that Singapore Airlines resumed flights ...How is it that Singapore Airlines resumed flights after inspections and Quantas is indicating a similar orientation.<br /><br /> I am suggesting that you try to address soem of the prior questions with as thoughtful a guess as one can give without the facts...or at least the facts that we know at this time.<br /><br /> I am wondering how long a thorough investigation will take ....one of the comments on Flightblogger ( right next to yours) sounded quite intelligent about the nature of a particular material .....<br /><br /> In your mind, how does this play out?<br /><br /> How and when can any anxiety about these engines be satisfied??Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-86794874044846746202010-11-05T09:41:28.611-04:002010-11-05T09:41:28.611-04:00Sorry, but without knowing the facts you can do ju...Sorry, but without knowing the facts you can do just wild guessing - and that range from "just inspect the engine a little more often" to "complete redesign". The truth is usually somewhere between. And there is a lot of space in between...aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-33834961995887909422010-11-05T09:36:17.144-04:002010-11-05T09:36:17.144-04:00Do you know or can guess whether and when this bec...Do you know or can guess whether and when this becomes detemined...that is, it is recognized as a design flaw....is it a statistical matter...a legal matter.<br /><br /> Can it be corrected and what does it take to correct it...does it have to be tested...certified....etc.<br /><br /> What satisfaction can RR give to customers....does it happen after wear?<br /><br /> Since you are an engineer, you could address at least the technical engineering engine issues that have to be overcome.<br /><br /> If I were ANA I would be quite concerned.<br /><br /> I suspect delivery delays ......and alot of blaming....Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-60547263665216450392010-11-05T08:44:51.491-04:002010-11-05T08:44:51.491-04:00The basic architecture of all Trent machines is th...The basic architecture of all Trent machines is the same - in fact, the Trent's are part of the RB211 family. The fact that we now had three uncontained failures at least in the same area of the engine (we don't know yet if the the broken disk that was found is the HPT of the IPT) and the EASA AD pointing to the IPT as sort of a problem area is at least an indication for a systematic design flaw. Qantas also points to either a material problem or a design problem.aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-7667596860536345952010-11-05T08:34:06.013-04:002010-11-05T08:34:06.013-04:00Could you clarify your last remark about why you w...Could you clarify your last remark about why you would not be happy to be employed in Darby and the IPT disk.<br /><br /> Was there some oversight or failure that should have been discovered or indicated.<br /><br /> What is the relationship between the Darby incident on a Trent 1000 and the Quantas incident 0n a Trent 900. Is there a commonality of structure, etc.<br /><br /> Is this a remediable problem or a major one?<br /><br /> I am still very concerned about its impact on the 787....any clarity here?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-43087199735556844082010-11-04T11:47:42.092-04:002010-11-04T11:47:42.092-04:00The Darby investigation took several weeks and I a...The Darby investigation took several weeks and I am not sure it is fully determinative.<br /><br /> But RR had issued a service warning for the Airbus 900 engine so they were aware of some issues that had to be carefully watched.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-19088270244349646792010-11-04T11:08:49.784-04:002010-11-04T11:08:49.784-04:00Excuses to delay...I guess there are a few (educat...Excuses to delay...I guess there are a few (educated) people who would say the same - I have no insight.<br />Also I do not know what are the hardware differences between the T1000 Package A and B engines.<br />But is well known that the oil system of the three-shaft-design is a little hard to handle.<br />I don't know the directives that RR and Airbus gave out, but I guess a full boroscoping of the engine or at least the now failing parts - can take from an hour to several hours.<br />Problem is: if there is a general design flaw, the problem occurs inflight...aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-39153254009107133922010-11-04T10:56:11.722-04:002010-11-04T10:56:11.722-04:00Is there a substantial difference in the design of...Is there a substantial difference in the design of the RR 1000 A & B so as to remove the 787 engines from implication?<br /><br /> However, from what I am reading, it seems to follow the same problem issue with the shaft and the possibility of an oil accumulation and overheating.<br /><br /> How long do these investigations take? As long as there is suspicion it must make Carriers that ordered it uncomfortable.<br /><br /> I wonder if this will contribute to any delay issues with the 787 ...or excuses to delay.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-23477114118618720522010-11-04T10:43:27.768-04:002010-11-04T10:43:27.768-04:00Good question that is!
I guess we will find out wh...Good question that is!<br />I guess we will find out when we hear what kind of inspections were ordered by RR and Airbus.aeroturbopowerhttps://www.blogger.com/profile/17686461923667604678noreply@blogger.comtag:blogger.com,1999:blog-8118460937928958757.post-36034732169364862192010-11-04T10:23:08.398-04:002010-11-04T10:23:08.398-04:00Is there any relavancy to this issue with the A &a...Is there any relavancy to this issue with the A & B models of the Trent 1000. That is, the problem in Darby was on an A model. The 787 is now changing to the B model.<br /><br /> In any event, however, does this raise larger questions about the RR engines and Carriers may wish to go with the GenX ones as a result.Anonymousnoreply@blogger.com