Search found 581 matches

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by kurtverbose
Tue Aug 11, 2020 12:14 pm
Forum: Technical/Operations
Topic: Is the RB211 finished on widebodies?
Replies: 13
Views: 1945

Re: Is the RB211 finished on widebodies?

Most of the dedicated 744F's powered by RB211 engines are still active, Most were original purchased by Cathay and Cargolux. Cargolux has 10 RR RB-211 powered 744F aircraft operational. Silkway West Airlines has three RB211 powered 744F's operational. Sky Gates Cargo Airlines has two RB211 powered ...

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by kurtverbose
Tue Aug 11, 2020 7:48 am
Forum: Technical/Operations
Topic: Is the RB211 finished on widebodies?
Replies: 13
Views: 1945

Is the RB211 finished on widebodies?

BA have retired their fleet of 747's and 767's. So have Qantas. Is anyone else still flying RB211's on a widebody? If not, it's been a bit over 50 years from conception to out of service, which even with the various derivatives is quite a long time. It's an engine that almost killed RR, but by the s...

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by kurtverbose
Tue Mar 10, 2020 8:17 am
Forum: Civil Aviation
Topic: 25 Years of the RR Trent
Replies: 42
Views: 6443

Re: 25 Years of the RR Trent

The T500 was not of poor quality. It was just a limited market on a 4 engine plane vs the 777 and sales were low. The engine itself performed to spec. This from lowbank who works at RR: - I am also interested in the real use of a a340 as I worked on lots of T500 parts. Shame a late design change sc...

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by kurtverbose
Mon Mar 09, 2020 5:52 pm
Forum: Civil Aviation
Topic: 25 Years of the RR Trent
Replies: 42
Views: 6443

Re: 25 Years of the RR Trent

GE effectively paid for exclusivity on the later 777 versions. That was financial not market. And it meant RR was off the platform. However way you look at it the T800 just wasn't as good a return for RR as the T700 was. RR bet on the A340 and the T500 and both the aircraft and the engine were lemo...

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by kurtverbose
Mon Mar 09, 2020 11:01 am
Forum: Civil Aviation
Topic: 25 Years of the RR Trent
Replies: 42
Views: 6443

Re: 25 Years of the RR Trent

You are aware that on the first generation of 777 (prior to GE exclusivity), RR (with the T800) gained the largest share of the market? 777-200 -300 - 200ER: RR 40% PW 30% GE 30% "Not great in the market"? What does that say about the (original) GE90 or the PW4000? Yes, I am aware of that...

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by kurtverbose
Mon Mar 09, 2020 9:13 am
Forum: Civil Aviation
Topic: 25 Years of the RR Trent
Replies: 42
Views: 6443

Re: 25 Years of the RR Trent

What's interesting considering they're a family of engines is the huge variance in quality and market success. T700 - great quality, big success T800 - great quality, not great in the market T500 - poor quality, poor in the market T900 - ok quality, ok in the market T1000 very suspect quality, medio...

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by kurtverbose
Sat Feb 22, 2020 1:24 pm
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 28186

Re: 777X vs A350 CASM

You have been caught lying multiple times on this thread to bring the A350 into a bad light. Even when you do claim to quote wiki, you make outright lies. I was grateful for your advice a while ago about the user control panel ignore list functionality. I have two posters in my list. I think you ca...

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by kurtverbose
Wed Feb 19, 2020 12:11 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6784

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 kurtverbose
Thu Feb 13, 2020 12:50 pm
Forum: Technical/Operations
Topic: Fuel Burn for A320
Replies: 21
Views: 2176

Re: Fuel Burn for A320

WIederling wrote:

Yup auto facepalm. :-))
( why would anyone do a comparative list CEO / NEO tagged Mission 1, Mission 2, ... and then use different Missions length? )


That would be an apples to apples comparison. We never do that on a.net.

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by kurtverbose
Wed Feb 12, 2020 12:57 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95778

Re: Boeing 737MAX Grounding, General Discussion Thread, February 2020

Interesting comments on simulators from Boeing's VP of Marketing: One key element of returning the jet to service is training pilots on simulators. While countries like India have advised Boeing to set up simulators locally, Tinseth on Tuesday said existing equipment should cover all training requi...

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by kurtverbose
Tue Feb 11, 2020 9:37 am
Forum: Civil Aviation
Topic: Airbus - blended wing aircraft code name Maveric
Replies: 104
Views: 15131

Re: Airbus - blended wing aircraft code name Maveric

Never mind the windows, what is interesting about this is they talk about it as a narrow body replacement. All blended wing ideas that I've seen so far have been very big planes. I didn't know a blended design could work in small sizes? Also, this is the problem with Boeing's NSA - some really innov...

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by kurtverbose
Mon Feb 10, 2020 8:44 am
Forum: Civil Aviation
Topic: Boeing CEO: NMA will "start with a clean sheet of paper again"
Replies: 1642
Views: 155796

Re: Boeing CEO: NMA will

https://www.youtube.com/watch?v=evd_WJA0gvY
-->

morrisond wrote:
Kevlar does a pretty good job at stopping bullets at a pretty light weight. Before that it was steel plates (The Good, The Bad and The Ugly).


Wrong Spaghetti Western. That was 'A Fistful of Dollars'.

https://www.youtube.com/watch?v=evd_WJA0gvY

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by kurtverbose
Sun Feb 09, 2020 2:25 pm
Forum: Technical/Operations
Topic: Turbofan Engine
Replies: 25
Views: 2811

Re: Turbofan Engine

@ SAAFNAV. I completely agree with you.

To the OP, if you want to know how a turbofan works go and stick your head inside of one.

I will give you this advice though, as wikipedia doesn't mention it, don't stick your head inside while it's running!

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by kurtverbose
Fri Jan 24, 2020 8:13 pm
Forum: Civil Aviation
Topic: Boeing 777-9 first flight 25 January 2020
Replies: 970
Views: 80744

Re: Boeing 777-9 first flight 24 January 2020 (weather permitting)

If you are being chased by a pack of taxidermists, do not play dead.

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by kurtverbose
Fri Jan 24, 2020 8:05 pm
Forum: Civil Aviation
Topic: Boeing 777-9 first flight 25 January 2020
Replies: 970
Views: 80744

Re: Boeing 777-9 first flight 24 January 2020 (weather permitting)

Just had a check up at the doctors.

He said "Don't eat anything fatty"

I said "Like bacon or cheeseburgers.?"

He replied "No fatty, don't eat anything..."

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by kurtverbose
Fri Jan 24, 2020 7:57 pm
Forum: Civil Aviation
Topic: Boeing 777-9 first flight 25 January 2020
Replies: 970
Views: 80744

Re: Boeing 777-9 first flight 24 January 2020 (weather permitting)

N14AZ wrote:
So does anybody know a good joke? I mean, to bridge the time?


I took my Granddad to one of those Spas where they have the little fish that will nibble away any dead skin ... it cost over £100 but it was cheaper than a funeral.

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by kurtverbose
Wed Jan 15, 2020 12:25 pm
Forum: Civil Aviation
Topic: Airbus and Boeing 2019 Orders
Replies: 486
Views: 136815

Re: Airbus and Boeing 2019 Orders

Widebody: Airbus - 217 gross / 51 net Boeing - 177 gross / 96 net In a softish widebody market, neither set of numbers is stellar, but Boeing's net was nearly double that of Airbus. Let's look at the individual programmes - firstly for Boeing. The 767 is a freighter/military programme. Great that i...

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by kurtverbose
Tue Jan 14, 2020 5:33 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding News and Reference Thread 2020
Replies: 209
Views: 309330

Re: Boeing 737MAX Grounding News and Reference Thread 2020

Interesting article from Leeham news.

Boeing likely faces an extended timeline to clear its inventory of 400 737 MAXes. LNA estimates it will be well into 2022 before these new-production airplanes are delivered to customers.

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by kurtverbose
Tue Jan 14, 2020 11:31 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding News and Reference Thread 2020
Replies: 209
Views: 309330

Re: Boeing 737MAX Grounding News and Reference Thread 2020

GE Aviation is laying off 70 temporary workers from its site in Bromont, Quebec, citing Boeing’s decision to halt 737 Max production as one factor leading to the cuts.

Flight Global article.

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by kurtverbose
Thu Jan 09, 2020 8:59 pm
Forum: Technical/Operations
Topic: Piaggio P.180 Avanti
Replies: 45
Views: 6830

Re: Piaggio P.180 Avanti

As I understand it, in this configuration the main wing and the engines can be far back, so you don't get a wing spar in the cabin, and the noise is back there. That would probably be even more the case if they just had a cannard and main wing. I heard from an instructor (so take this with a grain ...

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by kurtverbose
Tue Dec 24, 2019 8:29 am
Forum: Technical/Operations
Topic: Piaggio P.180 Avanti
Replies: 45
Views: 6830

Re: Piaggio P.180 Avanti

Starlionblue wrote:
As I understand it, in this configuration the main wing and the engines can be far back, so you don't get a wing spar in the cabin, and the noise is back there.


That would probably be even more the case if they just had a cannard and main wing.

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by kurtverbose
Mon Dec 23, 2019 3:35 pm
Forum: Technical/Operations
Topic: Piaggio P.180 Avanti
Replies: 45
Views: 6830

Re: Piaggio P.180 Avanti

I must admit I don't understand the Avanti. Ok, so all the horizontal surfaces give lift, but there are 3 of them. That's 6 wing ends - more than a biplane. Why doesn't it just have a cannard like the Beechcraft Starship (I know that wasn't a successful plane)?

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by kurtverbose
Fri Nov 22, 2019 10:56 am
Forum: Civil Aviation
Topic: Engine efficiency-what are the limits?
Replies: 64
Views: 7814

Re: Engine efficiency-what are the limits?

The current limits i think are to do with the moving parts and the engine cycle used. The ultimate jet engine would have no moving parts, and would not burn fuel in the engine. Experiments with high voltage electric charge of air has started as a propulsive force to sustain flight. While in the ver...

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by kurtverbose
Tue Nov 19, 2019 12:08 pm
Forum: Civil Aviation
Topic: A330Neo - 2019 a great year
Replies: 332
Views: 45462

Re: A330Neo - 2019 a great year

Both RR and GE wanted exclusivity on the A330neo because they did not want to fight over the frame when they had both spent billions on the far over budget T1000/GEnx programs (often overlooked here because of focus on Boeing) that they would probably never get back from 787 sales alone. They are/w...

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by kurtverbose
Tue Nov 19, 2019 11:55 am
Forum: Civil Aviation
Topic: A330Neo - 2019 a great year
Replies: 332
Views: 45462

Re: A330Neo - 2019 a great year

400 frames deliveries would be financial a roaring success. In regards to RR, it is not a complete new engine, but an engine based on components out of the building kit. 800 engines plus spares would be dream come true for RR. Quite correct - and one reason both GE and RR insisted on exclusivity - ...

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by kurtverbose
Tue Nov 19, 2019 10:15 am
Forum: Civil Aviation
Topic: A330Neo - 2019 a great year
Replies: 332
Views: 45462

Re: A330Neo - 2019 a great year

Can the 777-9 really carry an OEW penalty of ~25T over the A350-1000 (16%), carry ~8-10% more people and deliver the same CASM? Dubious. Very very dubious. I'm equally skeptical, but it does have engine tech that is half a decade ahead of the XWB, and 10 abreast seating. I do see the 777X as the A3...

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by kurtverbose
Wed Nov 13, 2019 4:42 pm
Forum: Technical/Operations
Topic: L1011 Question About a Small Detail
Replies: 31
Views: 4175

Re: L1011 Question About a Small Detail

WesternDC6B wrote:
I’d sure like to fly on one again.


I flew on one when I was a kid. Out of Kuwait. It had engine failure and diverted. Spent the night in an horrible hotel with awful food.

I still really like the plane though.

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by kurtverbose
Mon Nov 04, 2019 12:01 pm
Forum: Technical/Operations
Topic: Why are turboprops so named ?
Replies: 56
Views: 9318

Re: Why are turboprops so named ?

Like you, I wasn't there, and whilst I would like to believe everybody here on a.net knows the difference, my understanding is that a supercharger uses a mechanical drive from the engine (or sometimes from a secondary engine), whereas a turbocharger utilises "free" energy from exhaust gas...

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by kurtverbose
Mon Oct 28, 2019 12:52 pm
Forum: Technical/Operations
Topic: Why are turboprops so named ?
Replies: 56
Views: 9318

Re: Why are turboprops so named ?

Are we also renaming 'turboshaft' to jetshaft or shaftjet? Actually, if we're renaming all the turbo instances with jet, for the sake of consistency, we get jetjet instead of turbojet, jetfan instead of turbofan, jetshaft instead of turboshaft. Doesn't really work! When all these names came out (194...

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by kurtverbose
Sun Oct 06, 2019 8:03 am
Forum: Technical/Operations
Topic: Overweight or out of balance aircraft - isn't this automatically monitored?
Replies: 16
Views: 4867

Re: Overweight or out of balance aircraft - isn't this automatically monitored?

may be this topic more suited for this link: http://avherald.com/h?article=4cd54844&opt=0 An Air Greenland de Havilland Dash 8-200, registration OY-GRJ performing flight GL-548 from Nuuk to Kangerlussuaq (Greenland) with 29 passengers and 3 crew, was accelerating for takeoff from Nuuk's runway ...

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by kurtverbose
Tue Oct 01, 2019 7:26 pm
Forum: Technical/Operations
Topic: Overweight or out of balance aircraft - isn't this automatically monitored?
Replies: 16
Views: 4867

Re: Overweight or out of balance aircraft - isn't this automatically monitored?

I guess the more pasengers boarded the closer to the average they will be.

A 15 seat plane carrying a rugby team would be way off though.

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by kurtverbose
Mon Sep 30, 2019 11:01 am
Forum: Technical/Operations
Topic: Overweight or out of balance aircraft - isn't this automatically monitored?
Replies: 16
Views: 4867

Overweight or out of balance aircraft - isn't this automatically monitored?

I was reading about this Dash 8 incident where the airline made an assumption about the weight of the passengers that turned out to be wrong and eventually aborted a takeoff. The aircraft was significantly heavier than assumed and out of C of G limits. I realise this is a smaller and older aircraft,...

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by kurtverbose
Mon Sep 16, 2019 5:03 pm
Forum: Civil Aviation
Topic: Kenyan lawmaker wants to ban flatulence on airplanes
Replies: 57
Views: 10317

Re: Kenyan lawmaker wants to ban flatulence on airplanes

reltney wrote:
The entire cabin air is replaced every 3-4 min. The air on a plane is cleaner than in a house.!


That sounds like a challenge!

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by kurtverbose
Fri Jul 19, 2019 7:16 am
Forum: Civil Aviation
Topic: Boeing Expects a $5.6 Billion Hit for 737 Max Disruptions
Replies: 128
Views: 16354

Re: Boeing Expects a $5.6 Billion Hit for 737 Max Disruptions

$5.6b actually doesn't sound that bad. The article refers to USD5.6 plus a further USD 1.7 to be spread over future accounting periods. I am not challenging that it doesn't sound too bad, but just clarifying the actual cost announced. That's 7.2 billion in total. The A350 development cost was 12.38...

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by kurtverbose
Mon Jun 17, 2019 10:50 am
Forum: Civil Aviation
Topic: Updated: Airbus announcing A321XLR
Replies: 400
Views: 72535

Re: Airbus Launches A321XLR

FrenchPotatoEye wrote:
I wouldn't be surprised by EIs to see the range actually go higher.


Isn't there quite a significan't PIP coming from Pratt?

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by kurtverbose
Tue May 28, 2019 5:43 pm
Forum: Technical/Operations
Topic: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?
Replies: 22
Views: 4946

Re: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?

From FlghtGlobal in 2004 : - Airbus Military has chosen a unique "handed" propeller concept for the A400M airlifter in a bid to mitigate some of the technical risk associated with integrating what will be the West's most powerful turboshaft engines on to the airframe. Also known within Air...

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by kurtverbose
Tue May 21, 2019 1:03 pm
Forum: Non-Aviation
Topic: Niki Lauda Dead at 70
Replies: 46
Views: 2282

Re: Niki Lauda, R.I.P.

If you've read his autobiography from the 80's you'll find out about his fight with Austrian Airlines, which is a real example of state controlled protectionism. Shocking how consumers were ripped off by their own government to try and support the state airline. One example was AA saying he couldn't...

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by kurtverbose
Tue Feb 26, 2019 8:29 pm
Forum: Technical/Operations
Topic: Trent XWB performance/Inflight Shutdown Rate
Replies: 19
Views: 3663

Re: Trent XWB performance/Inflight Shutdown Rate

A 777 pilot will typically go a career without an IFSD. If the A350 holds up, most airlines won't see an IFSD You have just sounded the death knell of the big twins - long live the big singles! Now, how/where are they going to mount that big engine? I propose in the tail like an L1011 but sucking u...

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by kurtverbose
Wed Jan 23, 2019 9:39 am
Forum: Civil Aviation
Topic: Small plane disappears over English Channel
Replies: 134
Views: 32050

Re: Small plane disappears over English Channel

The plane was hired by Cardiff football club and not the player They pay $15 million for the guy and fly him over the Channel on a piston single in winter? Bloody-freaking-hell... :banghead: :banghead: I wouldn't blame the club who wouldn't know about aircraft safety. Blame the operator for proposi...

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by kurtverbose
Fri Nov 02, 2018 10:58 am
Forum: Technical/Operations
Topic: 787 vs A350 range
Replies: 483
Views: 116320

Re: 787 vs A350 range

But abies111's comparing the 787-10 with the A350-900, and the capacity of the A359 is very similar to the 787-10. Given how close the A359 is to the 789 in fuel burn, it must better the 787-10 and have the ability to fly considerably futher.

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by kurtverbose
Mon Oct 29, 2018 10:34 am
Forum: Technical/Operations
Topic: 787 vs A350 range
Replies: 483
Views: 116320

Re: 787 vs A350 range

If it's correct then the A350 has a very small fuel burn penalty for the extra capability.

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by kurtverbose
Thu Oct 18, 2018 10:58 am
Forum: Technical/Operations
Topic: Would Boeing make a 757 on request?
Replies: 49
Views: 6333

Re: Would Boeing make a 757 on request?

What would full list price be, bearing in mind it's not listed?

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by kurtverbose
Thu Jul 26, 2018 3:52 pm
Forum: Technical/Operations
Topic: Fuel Burn of MD-83 vs. A319NEO and 737 MAX7
Replies: 12
Views: 3427

Re: Fuel Burn of MD-83 vs. A319NEO and 737 MAX7

viewtopic.php?t=1355819

Couldn't find the MAX
-->

MD-83 - 3060 kg/h
Airbus 320neo - 2100 kg/h

From this thread

viewtopic.php?t=1355819

Couldn't find the MAX

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by kurtverbose
Mon Jul 16, 2018 10:30 am
Forum: Civil Aviation
Topic: RR - 787 glider list
Replies: 28
Views: 6712

Re: RR - 787 glider list

Is there a list of those that are grounded but then get back in the air?

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by kurtverbose
Wed Jul 11, 2018 12:45 pm
Forum: Civil Aviation
Topic: Reuters: Airbus is studying A321XLR with extended range over LR
Replies: 470
Views: 77545

Re: Reuters: Airbus is studying A321XLR with extended range over LR

He also said he sees a new NB around 2030, so that would seem to put the kibosh on extensive changes like rewinging.

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by kurtverbose
Wed Jul 11, 2018 10:09 am
Forum: Technical/Operations
Topic: Can you tell what engine a plane is using just by looking at it?
Replies: 26
Views: 3020

Re: Can you tell what engine a plane is using just by looking at it?

How do you distinguish them on the 787 - they look almost exactly the same?

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by kurtverbose
Mon Jun 18, 2018 1:14 pm
Forum: Civil Aviation
Topic: Reuters: Airbus is studying A321XLR with extended range over LR
Replies: 470
Views: 77545

Re: Airbus is studying A321XLR to challenge Boeing

From reading the article, this just sounds like another MTOW increase for the A321. Airbus redefined what the suffix LR meant with the A321LR. All the LR represents is a 7,000lbs MTOW increase (3.5%). The ER on 737-900ER was an MTOW increase of 13,000lbs (7.8%). The LR on on the 777LR represents a ...

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by kurtverbose
Thu Jun 14, 2018 11:46 am
Forum: Civil Aviation
Topic: Etihad reports $1.52bn in losses for 2017
Replies: 42
Views: 6989

Re: Etihad reports $1.52bn in losses for 2017

James Hogan Bio from knighthoodcapital.com: - James Hogan is the founder and Executive Chairman of Knighthood Capital. He recently served as President and CEO of the Etihad Aviation Group, which he built into a US$20 billion multi billion dollar losing enterprise, achieving failing to achieve the m...

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by kurtverbose
Tue Jun 12, 2018 2:06 pm
Forum: Civil Aviation
Topic: How far could an A350-900ULR go with a standard config?
Replies: 95
Views: 20461

Re: How far could an A350-900ULR go with a standard config?

Polot wrote:
I might have missed something in this thread, where is this 5% improvement number coming from exactly?


No idea. 1% was quoted for the aerodynamics and RR quotes another 1% for the engine PIP.

5% on a still quite new design seems like fantasy to me.

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