Search found 54 matches

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by WholaLottaLove
Thu Feb 20, 2020 7:56 pm
Forum: Technical/Operations
Topic: Durability of high-pressure turbine blades
Replies: 3
Views: 1279

Durability of high-pressure turbine blades

Does anyone on this form know how long high-pressure turbine blades in widebody engines usually last? On the web, I found anything from 2,500 to 20,000 cycles, which does not make much sense to me. Are HPT blades usually fully swapped out after the first shop visit, i.e. every 4-6 years?

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by WholaLottaLove
Wed Feb 19, 2020 1:32 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6865

Re: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?

All I can say to you guys is, as I understand it. We are given a fan diameter and a power output required, SFC etc. Normally the power request goes up but the fan size stays the same. Go figure what happens. Going back to the XWB, as I remember it. The initial request was around 80k and 90k thrust ...

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by WholaLottaLove
Tue Feb 18, 2020 4:47 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6865

Re: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?

The best way it’s been described in layman’s term’s to me. RR employee. The T1000-ten is akin to a Ferrari V12 F1 engine. The XWB is more like a Camaro V8 road engine. I have had the privilege of sitting through some lunch and learn presentations on the T1000 component issues, the work that’s gone ...

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by WholaLottaLove
Tue Feb 18, 2020 1:06 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6865

Re: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?

The main issues with the Trent 1000/Ten engine are with the IP section both IPC and IPT. I've not seen this mentioned much but the power offtake for the generators/gearbox is from the IP section on this engine due to the genys and believe the XWB reverts back to Roll's traditional location for powe...

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by WholaLottaLove
Tue Feb 18, 2020 9:40 am
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6865

Re: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?

The 787 doesn't use bleed air. That means putting more generators on it, causing more mechanical friction. Jet engines never did well with mechanical friction. The 787 was also rushed, with the planned rollout in 2007 and EIS not too long after. That caused unneccesary rush by Rolls Royce. Had they...

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by WholaLottaLove
Mon Feb 17, 2020 8:32 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6865

Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?

I have a question for the engine experts on this forum: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB? As a recap, there are three problems with the Trent 1000-TEN: ⋅  IP compressor (vibrations can cause the blades to crack) ⋅  IP turbine (corrosion-relat...

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by WholaLottaLove
Tue Dec 17, 2019 4:18 pm
Forum: Civil Aviation
Topic: Airbus Narrowbody Portfolio Development 2020-2030
Replies: 68
Views: 9618

Re: Airbus Narrowbody Portfolio Development 2020-2030

I think it makes perfect sense for Airbus not having much appetite for a new narrowbody program until at least ~2025. However: If Boeing is forced to launch a new narrowbody program now (and I think the likelihood is high given the MAX problem and the A321XLR threat) then I cannot really see Airbus ...

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by WholaLottaLove
Mon Jun 10, 2019 8:03 pm
Forum: Civil Aviation
Topic: Confirmed: 777X First Flight Delayed Due GE9X Issues
Replies: 320
Views: 78245

Re: 777X First Flight Delayed to Year End Due GE9X Issues

5. Low turbine tech. See LEAP-1B and take it a generation forward. Traditionally, I have been a fan of Pratt being the leader here, but GE stole the right Pratt people. See the incredible efficiency bump of the PW1100G with the low turbine enhancement. First of all, thank you for your post Lightsab...

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by WholaLottaLove
Mon Jun 03, 2019 5:12 am
Forum: Civil Aviation
Topic: Pratt & Whitney reduces life limits for A220, E190/E195-E2 engines
Replies: 30
Views: 8434

Re: Pratt & Whitney reduces life limits for A220, E190/E195-E2 engines

I didn't realize the engines had that kind of mark up. I thought I read they were sold roughly at cost and the after market brought in the profits. I think the business model still is to initially sell the engine at cost and then make your profits in the aftermarket. However, if an airline buys a n...

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by WholaLottaLove
Mon Mar 04, 2019 10:08 am
Forum: Civil Aviation
Topic: Reuters: Rolls Royce withdraws bid for Boeing NMA project
Replies: 235
Views: 34470

Re: Reuters: Rolls Royce withdraws bid for Boeing NMA project

RR has hinted they would be willing to partner. IMHO, that is the only way the get onto the NMA. A geared V5000 (50k thrust) would be amazing, but how likely is this? - On the V2500 the following parties were involved: ⋅  Fan: ? ⋅  LPC compressor: JAEC ⋅  HPC compresso...

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by WholaLottaLove
Fri Mar 01, 2019 12:48 pm
Forum: Civil Aviation
Topic: Airbus A350 to have RR Ultrafan Engines from ~2025, Ostrower
Replies: 224
Views: 45633

Re: Airbus A350 to have RR Ultrafan Engines from ~2025, Ostrower

The news we have ( https://www.airliners.net/forum/viewtopic.php?f=3&t=1416725 ) that says RR can't commit to a 2025 NMA launch suggests to me at least that a 2025 A350neo is also at risk. We also know RR just reported a GBP 3B loss. That headline loss was mainly driven by FX related accounting...

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by WholaLottaLove
Fri Mar 01, 2019 12:00 pm
Forum: Technical/Operations
Topic: Trent XWB performance/Inflight Shutdown Rate
Replies: 19
Views: 3751

Re: Trent XWB performance/Inflight Shutdown Rate

Update: As per the press release yesterday, the Trent XWB has now accumulated 3m flight hours with just one (to my knowledge) IFSD.

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by WholaLottaLove
Tue Feb 26, 2019 5:56 pm
Forum: Technical/Operations
Topic: Trent XWB performance/Inflight Shutdown Rate
Replies: 19
Views: 3751

Re: Trent XWB performance/Inflight Shutdown Rate

http://avherald.com/h?article=4bd97c82
-->

lightsaber wrote:
This is good. Has there only been one IFSD?
Lightsaber


As far as I am aware, yes.

The one known IFSD is this one, which apparently was due to an electronics problem, not a mechanical issue:
http://avherald.com/h?article=4bd97c82

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by WholaLottaLove
Tue Feb 26, 2019 3:41 pm
Forum: Technical/Operations
Topic: Trent XWB performance/Inflight Shutdown Rate
Replies: 19
Views: 3751

Trent XWB performance/Inflight Shutdown Rate

Hello, I have a question regarding the correct interpretation of the inflight shutdown rate (IFSR) statistic. An article on the GE90 from 2014 mentions the following: EVENDALE, OH –- April 17, 2014 — Since entering service in 1995, GE’s GE90 engine family has reached 40 million flight hours , with m...

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by WholaLottaLove
Thu Jan 17, 2019 2:17 pm
Forum: Civil Aviation
Topic: The business model of Finnair?
Replies: 28
Views: 5305

Re: The business model of Finnair?

HEL is actually ideally located for Asia-bound travel. It is the only hub in Europe that can fly the A350 to and from Asia within one day. Their A350 utilization rates are insane!

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by WholaLottaLove
Fri Nov 30, 2018 6:34 pm
Forum: Civil Aviation
Topic: DGCA update report on GTF
Replies: 2
Views: 414

Re: DGCA update report on GTF

Thank you for correcting!

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by WholaLottaLove
Fri Nov 30, 2018 1:18 pm
Forum: Civil Aviation
Topic: DGCA update report on GTF
Replies: 2
Views: 414

DGCA update report on GTF

http://dgca.nic.in/public_notice/PN-A32 ... ne(Nov2018).pdf

This certainly seems to be positive news for the GTF.
-->

Indias regulator has released an update report on the GTF and it seems like P&W is getting a grip on the problems:
http://dgca.nic.in/public_notice/PN-A32 ... ne(Nov2018).pdf

This certainly seems to be positive news for the GTF.

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by WholaLottaLove
Mon Sep 24, 2018 10:17 am
Forum: Technical/Operations
Topic: How efficient can a jet engine get in the future ?
Replies: 19
Views: 3425

Re: How efficient can a jet engine get in the future ?

And of course: gearboxes for large engines.

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by WholaLottaLove
Mon Sep 17, 2018 3:08 pm
Forum: Civil Aviation
Topic: Diversion of IB A350 causes RR shares to drop
Replies: 90
Views: 20975

Re: Diversion of IB A350 causes RR shares to drop

As per Bloomberg: "U.K. engine maker’s initial analysis of Iberia A350 in-flight turbine shutdown was due to an issue with the engine’s control system; this is now being addressed, Rolls-Royce says in emailed statement. - Inspections showed no damage to engine core, confirms no connection betwe...

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by WholaLottaLove
Thu Sep 13, 2018 7:00 am
Forum: Civil Aviation
Topic: Diversion of IB A350 causes RR shares to drop
Replies: 90
Views: 20975

Re: Diversion of IB A350 causes RR shares to drop

A large drop in the share price would only make sense if this is due to a design problem. Isn't this more pointing towards a production issue given the fact that this engine was more or less brand new? (2-3 months old)

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by WholaLottaLove
Mon Sep 03, 2018 11:39 am
Forum: Civil Aviation
Topic: Future widebody delivery composition
Replies: 3
Views: 840

Re: Future widebody delivery composition

I cannot see the 777X getting to that rate - but then your deliveries per year and rate do not tally. I suspect it will be a niche aircraft. I could see rate 6 being acheived. That is absolutely possible, my estimate is "straight from the gut", the 777X shortfall might be replaced by more...

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by WholaLottaLove
Mon Sep 03, 2018 10:34 am
Forum: Civil Aviation
Topic: Future widebody delivery composition
Replies: 3
Views: 840

Future widebody delivery composition

Hi, the following broad widebody segmentation crystallized in another thread: Ultra Long Haul 250 pax - A350-900ULR 300 pax – 777X-8 Long Haul 200 pax – 787-8 250 pax – 787-9 250 pax – A350-900 300-350 pax - A350-1000 350-400 pax – 777X-9 Medium Haul 200 pax - A330-900 200 pax – 787-8 250 pax - A350...

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by WholaLottaLove
Sun May 27, 2018 8:03 pm
Forum: Civil Aviation
Topic: Bombardier launches Global 5500 and Global 6500
Replies: 47
Views: 8572

Bombardier launches Global 5500 and Global 6500

Bombardier today annouced the Global 5500 and Global 6500 with new RR engines: https://www.bloomberg.com/news/articles/2018-05-27/bombardier-to-build-two-new-luxury-aircraft-amid-growing-demand Am I correct that this mark the rather surprising re-entry of Rolls Royce into the biz jet market? I would...

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by WholaLottaLove
Mon May 14, 2018 6:54 am
Forum: Civil Aviation
Topic: Airbus A320neo Family Production/Delivery Thread 2018
Replies: 689
Views: 208448

Re: Airbus A320neo Family Production/Delivery Thread 2018

lightsaber wrote:
audidudi wrote:
Hawaiian Airlines third A321N was delivered today:

Airbus A321-271N 8092 N205HA Hawaiian Airlines delivery 11 May 2018 XFW-YYR-PAE ex D-AVZA

Great news! Seeing the delivery pace pick up is good to see.

Lightsaber


Are the Hawaiian Airlines A320/A321 equipped with P&W engines?

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by WholaLottaLove
Tue Apr 24, 2018 8:33 am
Forum: Civil Aviation
Topic: Are modern aircraft engines really becoming less reliable?
Replies: 34
Views: 5588

Are modern aircraft engines really becoming less reliable?

Against the background of recent problems occurring on Trent 1000 and PW1000G engines I noticed increasing worries that modern aircraft engines seem to be less reliable than their predecessors. I wondered if this is just an issue of perception given the vast amount of new engine introductions over t...

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by WholaLottaLove
Sun Apr 15, 2018 1:43 pm
Forum: Civil Aviation
Topic: Rolls Royce having more 787 problems
Replies: 133
Views: 27077

Re: Rolls Royce having more 787 problems

Count me in the club that would not be shocked if issues in other Trents arose. It's an issue with durability. We won't know till the TXWB/T7000/TTEN fleet get more hours on it. The need to cut spending on UltraFan just as NMA is developing critical mass is concerning as well. Thank you for your po...

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by WholaLottaLove
Tue Feb 27, 2018 5:07 pm
Forum: Civil Aviation
Topic: Airbus stops accepting PW1100G engines
Replies: 230
Views: 53356

Re: Airbus stops accepting PW1100G engines

According to UTX's (P&W parent) CEO, GTF production will be resumed next week. As far as I understand it, they simple switched back to the old knife-edge seal used in the original GTFs. I wonder if this is an actual long-term solution? The fix already got regulatory approval.

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by WholaLottaLove
Wed Jan 31, 2018 2:17 pm
Forum: Civil Aviation
Topic: A321LR takes to the skies for the first time
Replies: 260
Views: 44137

Re: A321LR takes to the skies for the first time

Is this A312LR equipped with LEAP or GTF engines?

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by WholaLottaLove
Sun Jan 28, 2018 12:59 pm
Forum: Technical/Operations
Topic: What are fast spinning LPT good for?
Replies: 2
Views: 805

Re: What are fast spinning LPT good for?

Up to a point, the higher the tip Mach number of the turbine the more energy it can extract per stage. If you can get more energy extraction per stage you can reduce your stage count and weight. A slow spinning LPT can still achieve higher tip Mach numbers by increasing their radius (and most do, s...

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by WholaLottaLove
Sat Jan 27, 2018 3:15 pm
Forum: Technical/Operations
Topic: What are fast spinning LPT good for?
Replies: 2
Views: 805

What are fast spinning LPT good for?

It is common knowledge that the fan runs at a different (lower) optimal speed than the LPT (higher) which turns the fan - hence the need for a gearbox. Now: This might be a stupid question, but since the fan is supposed to run at a lower speed anyway, what is the benefit of having the LPT running at...

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by WholaLottaLove
Fri Jan 26, 2018 9:03 am
Forum: Technical/Operations
Topic: Trent1000 EASA AD
Replies: 28
Views: 3503

Re: Trent1000 EASA AD

Might the TrentXWB also be susceptible to the turbine issues the Trent1000 is currently experiencing? - After all, the TrentXWB is based on the Trent1000 design, however whilst the TrentXWB has a 2-stage IP, the Trent1000 only has a 1-stage IP.

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by WholaLottaLove
Mon Jan 22, 2018 4:41 pm
Forum: Civil Aviation
Topic: BBG: GE Engine Venture May Oust Rolls From Emirates A380 Contract
Replies: 46
Views: 6712

BBG: GE Engine Venture May Oust Rolls From Emirates A380 Contract

As per Bloomberg: https://www.bloomberg.com/news/articles/2018-01-22/ge-engine-venture-may-oust-rolls-from-emirates-a380-contract Is it really likely that Emirates pivots back to Engine Alliance for the A380? - Based on my understanding the Rolls-Royce Trent 900 is the technologically superior produ...

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by WholaLottaLove
Fri Oct 27, 2017 10:11 am
Forum: Civil Aviation
Topic: Airbus A320neo family production thread - 2015-2017 (part 7)
Replies: 2436
Views: 406791

Re: Airbus A320neo Family Production Thread - Part 7

As per MTU Aero Engines from yesterday: "We have achieved a stable output and we have met our quality and cost targets. Up to now, 16 operators are flying with 94 Geared Turbofan powered aircraft and are benefiting from its excellent performance. At least 16% fuel efficiency is achieved with so...

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by WholaLottaLove
Sun Oct 08, 2017 3:32 pm
Forum: Technical/Operations
Topic: Airlines Paying For Engines Against Hour Flown?
Replies: 30
Views: 8715

Re: Airlines Paying For Engines Against Hour Flown?

I have a quick question regarding Flight-per-Hour contracts/TotalCare contracts: Do these generally contain a clause that governs how any future cost savings (say by applying predictive maintenance) are split between the engine OEM and the airline customer? Or does the engine OEM reap all of the ben...

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by WholaLottaLove
Sun Jul 30, 2017 5:09 pm
Forum: Civil Aviation
Topic: Airbus CEO Calls Out PW on Engine Issues
Replies: 85
Views: 19566

Re: Airbus CEO Calls Out PW on Engine Issues

lightsaber wrote:
Pratt messed up on shaft issues.


In general, are shaft issues one of the harder or easier ones to fix? (i.e. can they be fixed on a stand-alone basis or do other parts of the core have to be reconfigured as well as a consequence?)

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by WholaLottaLove
Tue Jun 27, 2017 10:26 am
Forum: Civil Aviation
Topic: Is the GTF out of the woods?
Replies: 0
Views: 472

Is the GTF out of the woods?

Hi, reading United Technologies/P&W's latest transcript of their Paris Air Show presentation as well as other commentary it seems like the problems with the PW1000G/GTF seem to be mainly solved. Is this perception true? Apart from P&W's own statements I heard surprisingly few news about the ...

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by WholaLottaLove
Mon Jun 12, 2017 8:53 am
Forum: Civil Aviation
Topic: MU736 SYD-PVG Engine Failure after take-off
Replies: 51
Views: 15362

Re: MU736 SYD-PVG Uncontained Engine Failure after take-off

Will this incident be investigated in any form? After speaking with a couple of China Eastern and China Southern expat pilots some years ago made me seriously doubt the maintenance of most Chinese carriers. At least China Southern has a pretty significant state-of-the-art maintenance JV with MTU Ae...

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by WholaLottaLove
Fri Apr 28, 2017 3:22 pm
Forum: Technical/Operations
Topic: Why engine design partnerships?
Replies: 27
Views: 3263

Re: Why engine design partnerships?

[...] MTU and Pratt have joint ventures on the GTFs and PW800 engines as MTU had compressor technology to be merged with Pratt technology. [...] For whatever reason, Americans do better combustors and turbines and Europeans do better compressors and the French do the best flight control software, b...

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by WholaLottaLove
Sun Apr 02, 2017 2:18 pm
Forum: Civil Aviation
Topic: Business jet engine profitability?
Replies: 5
Views: 2032

Business jet engine profitability?

Hi, it seems to be an established fact that most large commercial aircraft engines are being sold at a loss upon delivery, but then that loss (plus a very decent margin) is being recovered over the life of the engines through services and the selling of spare parts. The exception to this might be ve...

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by WholaLottaLove
Tue Feb 07, 2017 7:58 pm
Forum: Technical/Operations
Topic: TrentXWB reliability?
Replies: 5
Views: 2597

TrentXWB reliability?

It seems quite remarkable to me how few issues there have been reported so far about the TrentXWB. Is this just my perception or is its in-service reliability really that good? (Especially since it is a relatively new engine) And is there anything known yet about XWB's having to be maintained early ...

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by WholaLottaLove
Mon Dec 12, 2016 12:13 pm
Forum: Civil Aviation
Topic: Airbus A320neo family production thread - 2015-2017 (part 7)
Replies: 2436
Views: 406791

Re: Airbus A320NEO Production Thread - Part 11

Very surprising that QR is switching to LEAP engines on the proposed A321neo order - not sure that is a wise move longer-term, despite the GTF ramp-up issues.

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by WholaLottaLove
Fri Nov 25, 2016 6:44 pm
Forum: Civil Aviation
Topic: Engines: Rate per Hour prices?
Replies: 5
Views: 1957

Engines: Rate per Hour prices?

Hello, does anyone know the (indicative) prices that engine manufacturers charge per hour under flight-per-hour agreements like TotalCare for modern widebody engines such as the TrentXWB and modern narrowbody engines such as the GTF? I am aware that the rates charged per hour depend on various varia...

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by WholaLottaLove
Thu Nov 03, 2016 8:08 pm
Forum: Civil Aviation
Topic: Any news on A350-2000/777-10?
Replies: 31
Views: 6282

Re: Any news on A350-2000/777-10?

The key question might be: Can RR provide engines (i.e. upgrade the TrentXWB even further) to power such an aircraft? I had an interesting conversation with somebody on the TXWB project who said that the -97 was maxed out but not for the reason we think. Interesting! What is the reason then in your...

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by WholaLottaLove
Thu Nov 03, 2016 9:53 am
Forum: Civil Aviation
Topic: Any news on A350-2000/777-10?
Replies: 31
Views: 6282

Re: Any news on A350-2000/777-10?

The key question might be: Can RR provide engines (i.e. upgrade the TrentXWB even further) to power such an aircraft?

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by WholaLottaLove
Thu Oct 27, 2016 10:39 am
Forum: Technical/Operations
Topic: Commercial aircraft engine development: Quo vadis?
Replies: 9
Views: 1676

Commercial aircraft engine development: Quo vadis?

Thought it might be interesting to start a thread to discuss where the next generation narrow- and widebody aircraft engines might be headed (well knowing that there is no platform for those engines yet). The key points - in my opinion - are: Narrowbodies Point 1: What will be the response of CFM (G...

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by WholaLottaLove
Wed Oct 26, 2016 8:22 pm
Forum: Travel, Polls & Preferences
Topic: 5$ flight on Ryanair
Replies: 25
Views: 4465

Re: 5$ flight on Ryanair

Also don't forget, every passenger choosing a 1 - 5 € Ryanair flight, is a passenger less for the legacy carriers (and Easyjet, for that matter). And Ryanair's aim is - as O'Leary stated quite openly - to one day serve as hub filler for the legacy carriers. Ryanair is doing all the right things, and...

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by WholaLottaLove
Tue Oct 25, 2016 7:51 pm
Forum: Civil Aviation
Topic: A330 NEO, disappointing for Airbus so far?
Replies: 206
Views: 42847

Re: A330 NEO, dissapointing for Airbus so far?

For RR, they only need another 14 A330NEO sales to justify their business case. They'll make it. In my opinion, the volume is too low to justify a 2nd engine. If two engines had been offered, customers would have waited to see the winner which would have doomed the A330NEO. Very interesting! Do you...

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by WholaLottaLove
Tue Oct 25, 2016 12:40 pm
Forum: Civil Aviation
Topic: Airbus A320neo family production thread - 2015-2017 (part 7)
Replies: 2436
Views: 406791

Re: Airbus A320NEO Production Thread - Part 11

UTX just stated in their Q3 call that "In the FIEM leg on the deliver flight was over 9 and a half hours the longer flight by an A 320 in history which was made possible by an 18% reduction in fuel burn for the aircraft."

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by WholaLottaLove
Mon Oct 24, 2016 11:33 am
Forum: Civil Aviation
Topic: A350 and TrentXWB performance so far
Replies: 2
Views: 1938

A350 and TrentXWB performance so far

Hello everyone, I am curious as to how the A350 and its TrentXWB engines are performing thus far? - With 41 deliveries to date we should have a large enough sample size to draw some initial conclusions about the reliability and actual performance of the aircaft. In comparison to the Dreamliner launc...

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by WholaLottaLove
Wed Oct 19, 2016 9:11 am
Forum: Technical/Operations
Topic: Beginners question on High Pressure Turbine (HPT)
Replies: 10
Views: 4505

Re: Beginners question on High Pressure Turbine (HPT)

Thanks a lot for your answers so far! So the main reason for the HPT is to (indirectly, by driving the HPC) drive the LPT?

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