Search found 9287 matches

by WIederling
Wed Feb 19, 2020 9:01 am
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6674

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

GE are having issues with premature wear and loads of engine removals, I was with a GE 787 operator a few weeks ago and they are not impressed with their performance. GE seem better prepared to deal with it. Protected. They don't get the (negative) media exposure RR does. Just Imagine LH (vs Air Fr...

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by WIederling
Tue Feb 18, 2020 10:01 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

The general idea is figuring out how to explore the edges of the flight envelope without MCAS activation and without Boeing's help. I don't know where the "without Boeing's help" comes from. The narrative running around this thread and elsewhere is that evil Boeing is trying to prevent vi...

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by WIederling
Tue Feb 18, 2020 6:12 pm
Forum: Civil Aviation
Topic: Why wouldn't the Trent 1000-TEN problems also show up in the Trent XWB?
Replies: 46
Views: 6674

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

Further, it doesn't matter much how you extract energy from the engine, i.e. by bleed air or by electrical generators. Yes it does. No it doesn't. The turbine provides power to its shaft. This power is used by devices connected to the shaft, like the compressor, electrical generators and other auxi...

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by WIederling
Tue Feb 18, 2020 5:56 pm
Forum: Non-Aviation
Topic: Swiss Crypto AG spying scandal shakes reputation for neutrality
Replies: 3
Views: 410

Re: Swiss Crypto AG spying scandal shakes reputation for neutrality

https://www.bbc.com/news/world-europe-51487856


The Swiss appear to have been neutral. The owners Crypto AG ( CIA, BND ) less so.
-->

sonicruiser wrote:
Guess the Swiss aren't so neutral after all.

https://www.bbc.com/news/world-europe-51487856


The Swiss appear to have been neutral. The owners Crypto AG ( CIA, BND ) less so.

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by WIederling
Tue Feb 18, 2020 5:48 pm
Forum: Technical/Operations
Topic: Flashlight for Line/Major maintenance
Replies: 24
Views: 2611

Re: Flashlight for Line/Major maintenance

Do you want one for inspection or for doing work? I found these ( sample, lots of other offers around ) surprisingly useful. https://www.amazon.com/Foldable-Rechargeable-Portable-Multi-Functional-Studying/dp/B0751DMWFV/ref=sr_1_4?keywords=led+foldable+usb&qid=1582047799&sr=8-4 ~4h Thing I cu...

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by WIederling
Tue Feb 18, 2020 4:14 pm
Forum: Civil Aviation
Topic: A321 wing area enlargement
Replies: 5
Views: 2405

Re: A321 wing area enlargement

@Amiga500. Interesting. Been here? https://www.flightglobal.com/analysis/analysis-how-airbus-is-redesigning-the-a321xlr-high-lift-system/133241.article not much more available at the moment. They seem to want to go towards the more flexible profile "re"forming actuation: "Like on the ...

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by WIederling
Tue Feb 18, 2020 3:49 pm
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

Does anyone have any data on relative costs, fuel burn, etc between the two planes? On a per seat basis, on a per trip basis, any data at all would be great. I wasn't really asking for a debate on CASM. And if you hate CASM, offering any data in any format beyond "all comparisons of any type a...

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by WIederling
Tue Feb 18, 2020 8:00 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

Not sure where MCAS is today, but with one of the proposed versions all you have to do is tape an AOA sensor at one of its stops to disable MCAS (if the two sensors disagreed then it cut out). you actually want to test the airplane without MCAS and not without AoA. All these funny solutions offered...

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by WIederling
Mon Feb 17, 2020 6:37 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

I thought I saw where it was posted that STS on the NG was the result of some EASA requirements, has EASA changed so much that Boeing no longer wants to work with them? OK, EASA predecessor JAA: https://www.flightglobal.com/737-700-receives-jaa-approval-after-stall-warning-changes/19663.article Thi...

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by WIederling
Mon Feb 17, 2020 5:58 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

* Boeing will never give in to any demand from unwashed EASA. I thought I saw where it was posted that STS on the NG was the result of some EASA requirements, has EASA changed so much that Boeing no longer wants to work with them? OK, EASA predecessor JAA: https://www.flightglobal.com/737-700-recei...

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by WIederling
Mon Feb 17, 2020 5:37 pm
Forum: Civil Aviation
Topic: Corona Virus outbreak - Aviation related News and Discussion Thread
Replies: 1387
Views: 211075

Re: Corona Virus outbreak - Aviation related News and Discussion Thread

As someone on the "vendor side" of aviation, this is a definitive black swan situation. It will, in my opinion, take over a year for growth to require more aircraft. What do you propose? Fly anyway? Spread the virus even faster for a "better epidemic" ? I suppose some crafty per...

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by WIederling
Mon Feb 17, 2020 5:29 pm
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

morrisond wrote:
https://epsilonaviation.wordpress.com/2019/06/29/what-can-and-cant-the-a321xlr-do/


Ah the guy with the strange looking diagrams :-)

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by WIederling
Mon Feb 17, 2020 12:23 pm
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

So LH prefers to send the lowest paying 100 customers (just assuming the difference between the 380 and 747 capacities,. Afaics: LH prefers "best fit" for hardware assigned to a route. And they seem to be willing to do this on reasonably short notice. What is known as "flexible"...

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by WIederling
Mon Feb 17, 2020 12:08 pm
Forum: Non-Aviation
Topic: Updated: US increases EU aircraft tariffs to 15%
Replies: 167
Views: 4400

Re: US increases tariffs to 15%

Or you just pretend to believe in free trade and markets... Whatever the US pushes under the pretext of "free $anything, lets be friends": It invariably is designed for one sided leverage. US advantaged. In a wide range of those cases the advantage was not played right usually due to exce...

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by WIederling
Mon Feb 17, 2020 11:48 am
Forum: Military Aviation & Space Flight
Topic: Threats to Stealth Aircraft
Replies: 14
Views: 2053

Re: Threats to Stealth Aircraft

The biggest threat to stealth aircraft right now is sound. It really isn’t. Sound is an inaccurate method with a large region of uncertainty for detecting and geo-locating aircraft and there are a plethora of methods that could be used to confuse a system based on detecting aircraft audibly. As can...

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by WIederling
Mon Feb 17, 2020 11:12 am
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

planecane wrote:
Strato2 wrote:
There's a reason Boeing needlessly enlarged the 777X and made it a VLA even after protesting against such planes.


Your statement contains a bit of a contradiction. If there was a reason they enlarged the 777X, then it wasn't done needlessly!


Nobody said life is simple. :-)))

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by WIederling
Mon Feb 17, 2020 11:10 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

So did Max take a test flight with mcas switched off or that's off the table? the devil will relish a meal of flies before that happens. ( If the manufacturer gets his mind.) Just what do you think would happen if it's turned off? A big explosion? MCAS is not a stability system. The plane operates ...

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by WIederling
Mon Feb 17, 2020 10:33 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

Sources please? Or is it just your own opinion/hope? Mostly mathematics. Tailback? If there are so many in the chute I'd have expected more rumors. ( Beyond that LOI from IAG?) Boeing would have been happy to bolster their standing re MAX with a smidgen of rumors, wouldn't they? On the other hand b...

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by WIederling
Mon Feb 17, 2020 10:20 am
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

Airbus and Boeing both pull all sorts of shenanigans when it comes to comparing performance per "seat". It is not both, by far not. There was a time when Boeing really screwed the pooch with their numbers and assumed seating densities and especially overcome monument weight assumptions. E...

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by WIederling
Mon Feb 17, 2020 9:57 am
Forum: Civil Aviation
Topic: Boeing CEO: NMA will "start with a clean sheet of paper again"
Replies: 1642
Views: 155156

Re: Boeing CEO: NMA will "start with a clean sheet of paper again"

The A322 will probably have the range of A321NEO +/- 5%. Not of the XLR. A321NEO already sells well. LR and XLR too find strong interest. i.e. extensions in capacity and range while keeping/improving established NB economics is the way demand can be expanded. Thus: A stretch extending the NB effici...

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by WIederling
Mon Feb 17, 2020 9:44 am
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

Really? Because it most certainly is a problem in europe although I'm sure Germans in particular are taught from a young age to be very self aware of their prejudices. https://www.bbc.com/news/world-europe-51294305 I know nothing about "Le Courier Picard" referenced in the article. If it ...

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by WIederling
Mon Feb 17, 2020 9:20 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

A certification is an important step in the life of an aircraft model, but it's not the end, it does not yet permanently freeze the design: That may only happen when the last plane of the type gets retired ! With airplanes having a limited life in use it could be deemed acceptable that certain requ...

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by WIederling
Mon Feb 17, 2020 8:47 am
Forum: Civil Aviation
Topic: 777X vs A350 CASM
Replies: 259
Views: 27955

Re: 777X vs A350 CASM

Anyone have any data on the cost per seat per mile(CASM) for the 777X and the A350? Searching the internet does not reveal much, and it does not seem to have been discussed on airliners.net since 2017!!? The 777X is heavier per seat, but has more efficient engines. Anyone know how this balances out...

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by WIederling
Mon Feb 17, 2020 8:32 am
Forum: Non-Aviation
Topic: Is There a Market for a Plain, Ordinary Car?
Replies: 210
Views: 8148

Re: Is There a Market for a Plain, Ordinary Car?

tommy1808 wrote:
I am just wondering if the boil of is just about right to power hotel mode....


These ships usually get a grid connection to shore. "ShorePower"
Keeping heating working ( living quarters but up front engine room / engines, .. )

Maybe boil off could work. Difficult to estimate.

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by WIederling
Mon Feb 17, 2020 7:33 am
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

I have the cutest most adorable Asian grandbabies. I didn't think I had a racist bone in me. I'm mortified if I came across racists which obviously I did by thinking out loud about my family safety. so I apologize and will become more self-aware. yes, slipping hand sanitizer and wipes in your purse...

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by WIederling
Sun Feb 16, 2020 9:45 pm
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

News here tonight:
The first batch ( ~120 ) of Germans retrieved and put in quarantine have been released ( with no further infections ).
2 cases separated on arrival with signs of infections.

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by WIederling
Sun Feb 16, 2020 6:21 pm
Forum: Non-Aviation
Topic: Updated: US increases EU aircraft tariffs to 15%
Replies: 167
Views: 4400

Re: US increases tariffs to 15%

Great, a plane assembled by US workers with large amounts of US content and sold on US soil is even better than 15% tariff on imported airplanes. They were getting those sales already. No evidence of a meaningful gain to the u.s. Shifting A320 production from TLS/XFW/TSN to MOB is a win for the US....

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by WIederling
Sun Feb 16, 2020 5:36 pm
Forum: Non-Aviation
Topic: Iraq defense ministry: Baghdad discussing deeper military ties with Moscow, considers S400 purchase
Replies: 4
Views: 479

Re: Iraq defense ministry: Baghdad discussing deeper military ties with Moscow, considers S400 purchase

Would it be unduly political to suggest that we need leadership who knows how to get along with our allies? Who haven't we gratuitously insulted and offended in the last three years? Doesn´t happen often that two Presidents lose the same war twice..... at least Bush jr. didn´t make fun of casualtie...

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by WIederling
Sun Feb 16, 2020 5:17 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

maint123 wrote:
So did Max take a test flight with mcas switched off or that's off the table?


the devil will relish a meal of flies before that happens. ( If the manufacturer gets his mind.)

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by WIederling
Sun Feb 16, 2020 3:01 pm
Forum: Civil Aviation
Topic: US Gov May Stop Engine, Avionics Deliveries to C919
Replies: 88
Views: 17351

Re: US Gov May Stop Engine, Avionics Deliveries to C919

Right because things haven't got infinitely harder to copy in the last 70 years. They are not going to be able to copy leap 1c. It's just such a ridiculous idea. you sure? :-) The idea that something cannot be copied or recreated is what I deem "ridiculous". ( Especially in relation to a ...

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by WIederling
Sun Feb 16, 2020 2:30 pm
Forum: Non-Aviation
Topic: Updated: US increases EU aircraft tariffs to 15%
Replies: 167
Views: 4400

Re: US increases tariffs to 15%

https://www.statista.com/statistics/587230/worldwide-orders-and-deliveries-and-aircrafts-in-operation-of-airbus/ Airbus U.S. customers can be mostly served by their plants in the U.S. The U.S. isn't as important as you'd like to make it out to be to Airbus. They don't go from free sales to no sales...

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by WIederling
Sun Feb 16, 2020 2:17 pm
Forum: Technical/Operations
Topic: NMA/MOM/797 variant performance analysis
Replies: 151
Views: 13536

Re: NMA/MOM/797 variant performance analysis

They had a 4 wheel bogie option that Air India used https://www.airliners.net/forum/viewtopic.php?t=755991 IMU that was never certified beyond the initial MTOW of the A320-200 . And the wheels are really small: 36x11 vs 49x17 ( some variants ) for the single axle MLG newer A321(CEO/NEO) have 1270X4...

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by WIederling
Sun Feb 16, 2020 1:50 pm
Forum: Non-Aviation
Topic: Is There a Market for a Plain, Ordinary Car?
Replies: 210
Views: 8148

Re: Is There a Market for a Plain, Ordinary Car?

Kiwirob wrote:
So you’ve never watched any of Bjørn Nylands 1000km videos.


Going by way of charger hopping.
Stressfull and nothing in the way of talking about day to day regular use.

10h for 1000km @ 100km/h average. Due to charging times "Pedal to the metal" while going.

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by WIederling
Sun Feb 16, 2020 1:47 pm
Forum: Non-Aviation
Topic: Is There a Market for a Plain, Ordinary Car?
Replies: 210
Views: 8148

Re: Is There a Market for a Plain, Ordinary Car?

There are complications moving from bunker to road diesel. not really. ( and you don't use "road diesel" anyway for switching away from bunker Oil.) The shipping I have contact with can swap between something comparable to heavy heating oil and bunker oil. Now what is commonly known as &q...

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by WIederling
Sun Feb 16, 2020 12:43 pm
Forum: Non-Aviation
Topic: Updated: US increases EU aircraft tariffs to 15%
Replies: 167
Views: 4400

Re: US increases tariffs to 15%

Developing my train of thought it might be a case of targetting the likes of 777 and 787 operators with inducements to switch to new A330 and A350 planes and then flooding specific carriers in the US with those secondhand airframes at prices which are too good to refuse. That in a way is Boeing est...

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by WIederling
Sun Feb 16, 2020 12:02 pm
Forum: Civil Aviation
Topic: Project Sunrise Approved - Pilot Agreement or Not
Replies: 376
Views: 56028

Re: Project Sunrise Approved - Pilot Agreement or Not

Well, I do not underestimate Airbus, but I still think the required modification for an entry into service in the first half of 2023 is very tight. They might well do it on time, but the buffer is not so huge. do you actually know what those changes will entail ? Do you? I don't have to. you are th...

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by WIederling
Sun Feb 16, 2020 11:44 am
Forum: Civil Aviation
Topic: Project Sunrise Approved - Pilot Agreement or Not
Replies: 376
Views: 56028

Re: Project Sunrise Approved - Pilot Agreement or Not

To speak in your own words, I do not think it is productive in this thread to UNDERESTIMATE Airbus. In many posts here you keep repeating that the timeline for an EIS in 2023 is very tight or optimistic and a lot of engineering work has to be done, you keep repeating that you do not think that an E...

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by WIederling
Sun Feb 16, 2020 11:39 am
Forum: Technical/Operations
Topic: NMA/MOM/797 variant performance analysis
Replies: 151
Views: 13536

Re: NMA/MOM/797 variant performance analysis

It may be that airbus can take the current gear up to 105t or even 110? At both those weights a 41m wing could take them an awful long way. The bigger issue may well be how to integrate it in to current production processes and maintain the cost advantage of the 32x series production scale. Can air...

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by WIederling
Sun Feb 16, 2020 11:33 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 95402

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

In fact if these are the worst things being reported after doing flight testing, I'd think they have solved the main problem to be solved reliably and are chasing down relatively minor side effects. Initializing errors are not really "minor". If you are unable to power up a system into a ...

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by WIederling
Sun Feb 16, 2020 11:25 am
Forum: Non-Aviation
Topic: Updated: US increases EU aircraft tariffs to 15%
Replies: 167
Views: 4400

Re: Updated: US to Impose Tariffs on EU Goods After WTO’s Airbus Ruling

Pyrex wrote:
And by playing games do you mean the EU straight up sabotaging the Boeing-Embraer deal while allowing Airbus to take over the C-Series?


Brazil as a country isn't too happy about the deal either.
Only the US leaning new right wing government is "pro".

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by WIederling
Sun Feb 16, 2020 10:04 am
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

Aaron747 wrote:
These posters are far more practiced in emotionalism than critical thinking and objective, rational thought. It is unrealistic to expect them to suddenly employ reason when irrationality is natural to them.


Thanks for the explanation. I stand down.

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by WIederling
Sun Feb 16, 2020 10:02 am
Forum: Civil Aviation
Topic: US Gov May Stop Engine, Avionics Deliveries to C919
Replies: 88
Views: 17351

Re: US Gov May Stop Engine, Avionics Deliveries to C919

I assume US aerospace suppliers said some bad words after hearing this and are already doing damage control with their customers. I think China is increasingly developing advanced products and selling them and protectionism is here. When things go south it's far easier to say it all unfair then bla...

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by WIederling
Sun Feb 16, 2020 9:53 am
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

With current travel restrictions in place and strong scrutiny of travelers from China, it's going to be something like a white business traveler that stopped in Singapore (where there is currently some untraceable community transmission happening) that starts community transmission in the US. Becau...

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by WIederling
Sun Feb 16, 2020 9:48 am
Forum: Civil Aviation
Topic: US Gov May Stop Engine, Avionics Deliveries to C919
Replies: 88
Views: 17351

Re: US Gov May Stop Engine, Avionics Deliveries to C919

The Trump administration is considering not issuing export licenses for further LEAP engine deliveries to China for the Comac C919. An extension of the existing license for avionics is also in doubt. The stated reason is concerns that China may reverse-engineer the products and break into the globa...

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by WIederling
Sun Feb 16, 2020 8:53 am
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

With current travel restrictions in place and strong scrutiny of travelers from China, it's going to be something like a white business traveler that stopped in Singapore (where there is currently some untraceable community transmission happening) that starts community transmission in the US. Becau...

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by WIederling
Sat Feb 15, 2020 9:28 pm
Forum: Non-Aviation
Topic: John Kelly Lets Loose on Trump
Replies: 22
Views: 1187

Re: John Kelly Lets Loose on Trump

Jouhou wrote:
He's better suited for being a right wing rage radio host.


Back to the roots.
anybody can be president in the US, right?

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by WIederling
Sat Feb 15, 2020 9:19 pm
Forum: Non-Aviation
Topic: Novel Coronavirus outbreak
Replies: 4092
Views: 162916

Re: Novel Coronavirus outbreak

I took a bus through San Francisco's Chinatown yesterday and also took the Mrs to a night club. While the chances of infection are low almost 2 weeks into the travel ban, I can't say I was comfortable, the place is packed with Chinese and nobody is wearing masks. So many Chinese here that it's unbe...

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by WIederling
Fri Feb 14, 2020 6:59 pm
Forum: Technical/Operations
Topic: Airbus Corporate Jet ACJ321LR, Scheduled ?
Replies: 65
Views: 11852

Re: Airbus Corporate Jet ACJ321LR, Scheduled ?

keesje wrote:
A321 XLR


IMU one could order the ACJ319 with ACTs to boot. 6? 7?

Nothing should prohibit the same option for an ACJ321NEO.
For the ACJ use LR, XLR properties are just gimmick. You'll never max out payload?

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by WIederling
Fri Feb 14, 2020 6:54 pm
Forum: Technical/Operations
Topic: Airbus Corporate Jet ACJ321LR, Scheduled ?
Replies: 65
Views: 11852

Re: Airbus Corporate Jet ACJ321LR, Scheduled ?

VV wrote:
Okay, so I would like to ask another "interesting" question.
Is Boeing going to launch NMA Business Jet?


Missing prerequisite: NMA :-)

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