Search found 7332 matches

by WIederling
Sun Dec 30, 2018 8:44 pm
Forum: Technical/Operations
Topic: NZ CEO hints longer range 787
Replies: 15
Views: 1870

Re: NZ CEO hints longer range 787

thepinkmachine wrote:
If Boeing gave it the same MTOW as the 789 it would be a real long range monster!


No, most of the extra beef on the 789 went into structure to allow the higher MTOW.
A 789 shrink will just lose the fuselage extensions. Not much.

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by WIederling
Sun Dec 30, 2018 4:01 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

The best propellers have a 60% efficiency, AC motors performing at high torque and for prolonged times will be overbuilt and operate at 80% efficiency while gas turbines are reaching 50% efficiency. . 80% e-Motor 50% gas turbine both values are pipedreams on your side. e-Motors today will never go ...

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by WIederling
Sun Dec 30, 2018 1:13 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

SheikhDjibouti wrote:
Before the usual suspects chime in with comments arguing that this waste heat means electric motors are not 100%


With efficiencies at the very top of energy conversion machinery electric motors don't really have to hide anything :-)

apropos the GTF gearboxes seem to gyrate around 99.5%

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by WIederling
Sun Dec 30, 2018 1:07 pm
Forum: Technical/Operations
Topic: A350 with the same fuselage width as 787
Replies: 26
Views: 4871

Re: A350 with the same fuselage width as 787

But when it was first announced it was to have aluminium frames. The change to composite frames was made a few months later. Some people are relying on out of date information which shows they don’t know what they are talking about. IMU and today it is a mixture of CFRP frames and Al frames. Again ...

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by WIederling
Sun Dec 30, 2018 12:55 pm
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

(¹) If, as a German, you still wonder why the fabulously gifted Nazi technicians never came up with this idea, blame the fact that one of Britain's national sports is cricket. :rotfl: Google "Kurt & Emil; The importance of back-spin" no pressure to know actually. You need the use case...

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by WIederling
Sun Dec 30, 2018 11:50 am
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

But, especially for Tu-114, the main problem was the national pride and such, from what I heard? Instead of any material negativities of having a prop on the wings maybe you should get a way from everybody else is incompetent and does things based on national pride only. The primary downside to the...

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by WIederling
Sun Dec 30, 2018 11:29 am
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

No if any /all of these serious developments ( the US one has ex Boeing guy now as COO so I guess is serious turn out as they hope then the 2020's-2030's could get very interesting indeed. These people? https://www.vox.com/energy-and-environment/2018/2/16/16926950/hydrogen-fuel-technology-economy-h...

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by WIederling
Sun Dec 30, 2018 11:13 am
Forum: Non-Aviation
Topic: The Anglophone Privilege
Replies: 104
Views: 5863

Re: The Anglophone Privilege

language dominance:

Is sitting in the center so to speak really of advantage?
Even if it is forced on you
Access to multiple cultures and languages is a pronounced advantage.

Just look at the prominence of Army Brats and the likes in the American environment.

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by WIederling
Sun Dec 30, 2018 11:07 am
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

FYI I googled ' breakthrough making hydrogen'. I would not search for a PR term in that context. it is often (invariably?) misused in certain language domains. just like "Quantum Step", "Worldwide Best" and things like that. thyssenkrupp has an electrolysis system that gets to b...

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by WIederling
Sun Dec 30, 2018 10:56 am
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

SheikhDjibouti wrote:
I seem to recall Boeing had to ask the RAF for heavy duty attachment and release mechanisms because their own were not up to the job.


From the Dam Buster Bombs ?

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by WIederling
Sun Dec 30, 2018 10:41 am
Forum: Non-Aviation
Topic: Should North Americans be limited to one car?
Replies: 156
Views: 7402

Re: Should North Americans be limited to one car?

How about pipeline gas? When is that one in the queue? Later than LNG :-) piped 'P'NG needs about 10% of its energy content for being readied for transport. A significant part of that is recuperated in substations when the pressure level is taken down. If you avoid Ukraine line losses are negligibl...

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by WIederling
Sun Dec 30, 2018 10:33 am
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

No doubt, but my point was that the GDR aircraft in question and its formerly Junkers designer weren't really heavily linked, if at all, to the B-52. I tend to view them as independent solutions to common problems. Baade and Boeing likely encountered similar problems and devised similar solutions, ...

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by WIederling
Sun Dec 30, 2018 10:14 am
Forum: Non-Aviation
Topic: The Anglophone Privilege
Replies: 104
Views: 5863

Re: The Anglophone Privilege

I had to go over a German speeding ticket six times before I understood what they wanted me to do. ... For instance, 99 is spoken as quatre-vingt-dix-neuf, or 4-20-10-9) Try figuring out a phone number when someone speaks fast? rambling: Intractable official texts a problem? This is not limited to ...

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by WIederling
Sun Dec 30, 2018 9:47 am
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

The big advantage with electric motors is they dont lose thrust with high altitude, but they still get the benefit of low drag at high altitude. It is not as easy as you think. You get a power derate from increased temperature on windings ( higher temp higher resistance ) and magnets ( curie temp e...

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by WIederling
Sat Dec 29, 2018 11:12 pm
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

.................. To say that the B-52 was a Junkers influenced design is, respectfully, highly questionable. My understanding is that Boeing got access to a massive stash of aerodynamic research data from the Prandtl founded AVA in Göttingen. Theoretical research findings and practical wind tunne...

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by WIederling
Sat Dec 29, 2018 10:42 pm
Forum: Technical/Operations
Topic: Such a Long Tail Cone You Have!
Replies: 18
Views: 4344

Re: Such a Long Tail Cone You Have!

Interesting that Boeing saw enough benefit to bother totally redesigning the 737 tailcone for the MAX. It went from a 747-style boat tail design, as used on all previous 737s, to the closest Boeing could get to a 787-style cone given the shape of the rest of the empennage. Back when the MAX details...

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by WIederling
Sat Dec 29, 2018 6:50 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

We have an issue here up north in Germany with an abundance of wind turbines but a lacking grid path down south to the consumers. Wind turbines are locked out of the grid in times of overproduction I have often wondered if there were any industrial processes which could use that sort of excess elec...

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by WIederling
Sat Dec 29, 2018 6:00 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

https://www.dailymail.co.uk/sciencetech/article-6353777/Experts-draw-plans-hydrogen-powered-passenger-planes.html Another nice article on hydrogen fuel stack aircaft.But..... You do have to make hydrogen first and it's usually a 'dirty' process 'cracking' natural gas ( so CO2) but you can crack wat...

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by WIederling
Sat Dec 29, 2018 5:22 pm
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1683
Views: 622650

Re: Airbus A350 Production/Delivery Thread 2018

Is this the same factory which supplies Boeing through that Vought sub contract for 787 rear pressure bulkheads? looks like : Premium Aerotec in Augsburg does the 787 and A350XWB rear pressure bulkhead in resin infusion. ... and lots of other stuff too .. but is not their only production site: http...

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by WIederling
Sat Dec 29, 2018 5:08 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

parapente wrote:
Gives a good idea of where 'we' have got to re hydrogen fuel cells.


Around the corner here they build the Type 212/214/.. U-Boats.
Their AIP system works from a fuel cell stack charging the LiIon batteries driving the electric propulsion motor.

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by WIederling
Sat Dec 29, 2018 4:49 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

It certainly gets around the all encompassing 'energy density' issue that is the critical determinant for aircaft.But you don't hear people suggesting it so perhaps the neigh Sayers are right. Public Transport for the City of Hamburg has bought a wide range of Hybrid/Full Alternative fuel busses an...

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by WIederling
Sat Dec 29, 2018 4:40 pm
Forum: Civil Aviation
Topic: A319neo CFM Leap-1A is certified
Replies: 62
Views: 7915

Re: A319neo CFM Leap-1A is certified

I don’t think there was any valid question about whether Airbus would certify the A319neo after they built one, but there were valid questions about whether Airbus would bother to ever certify a PW A319neo due to the slow sales of the model, PW issues, and the known customers (Avianca, Frontier) op...

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by WIederling
Sat Dec 29, 2018 4:05 pm
Forum: Civil Aviation
Topic: A319neo CFM Leap-1A is certified
Replies: 62
Views: 7915

Re: A319neo CFM Leap-1A is certified

All those elements triggered the question about A319neo. Airbus has never said they would abandon A319neo, but it is not necessarily the most compelling aircraft in its category. Afaics this started out with a bashing screed Airbus will ( must! ) abandon the A319NEO. From there lost of marginally r...

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by WIederling
Sat Dec 29, 2018 3:53 pm
Forum: Non-Aviation
Topic: Putin Wants To Be President For Life
Replies: 180
Views: 8141

Re: Putin Wants To Be President For Life

But as far as the Cold War, we won ... Round one - Mr Gorbachev. tear down this wall' event Round two - Russia successfully selects an agent as US President. Round three - who's standing when the dust settles? - your chips are clearly on Russia, mine are America mofo! Man. What did they teach you i...

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by WIederling
Sat Dec 29, 2018 2:44 pm
Forum: Civil Aviation
Topic: A319neo CFM Leap-1A is certified
Replies: 62
Views: 7915

Re: A319neo CFM Leap-1A is certified

All those elements triggered the question about A319neo. Airbus has never said they would abandon A319neo, but it is not necessarily the most compelling aircraft in its category. Afaics this started out with a bashing screed Airbus will ( must! ) abandon the A319NEO. From there lost of marginally r...

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by WIederling
Sat Dec 29, 2018 2:35 pm
Forum: Civil Aviation
Topic: Would a B-52 passenger variant have been possible?
Replies: 95
Views: 13332

Re: Would a B-52 passenger variant have been possible?

When the KC-97/Stratocruiser was developed a much larger diameter tube was grafted on to the relatively small diameter B-29 fuselage so that the floor would be above the wing spars, and since the wing was in the middle of the original fuselage this did not result in an unacceptable fuselage height....

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by WIederling
Sat Dec 29, 2018 12:55 pm
Forum: Non-Aviation
Topic: Capital punishment in the US and Its future
Replies: 150
Views: 8311

Re: Capital Punihsment in the US and Its Future

Your argument of "they've been given a death sentence, they must have done bad things (that justify it) before" is pretty moronic. A common reversal of causality. like: Our soldiers are heroes. Whatever they do must therefor be hero stuff and endlessly good. Another recurring problem with...

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by WIederling
Sat Dec 29, 2018 11:32 am
Forum: Technical/Operations
Topic: Such a Long Tail Cone You Have!
Replies: 18
Views: 4344

Re: Such a Long Tail Cone You Have!

Interesting that Boeing saw enough benefit to bother totally redesigning the 737 tailcone for the MAX. It went from a 747-style boat tail design, as used on all previous 737s, to the closest Boeing could get to a 787-style cone given the shape of the rest of the empennage. Back when the MAX details...

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by WIederling
Sat Dec 29, 2018 11:23 am
Forum: Non-Aviation
Topic: Putin Wants To Be President For Life
Replies: 180
Views: 8141

Re: Putin Wants To Be President For Life

The living standard in Russia is much lower, so is the poverty standard. The median wealth per capita in Russia is lower than in India, yet the average wealth in Russia is much higher than in India. Translation, the wealth cap in Russia is much greater than in India. Now do the same intellectual ex...

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by WIederling
Sat Dec 29, 2018 10:36 am
Forum: Non-Aviation
Topic: Der Spiegel - "Institutional Bias"
Replies: 75
Views: 5278

Re: Der Spiegal - "Institutional Bias"

You, sitting across the ocean have no idea. RACISM is used as a bludgeon in this country. I've come across some funnies on youtube : Expacts of color finding racism every second of their life in Germany. Some issues I could follow. Some are so outlandish you have to check mental health. lastly: In ...

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by WIederling
Sat Dec 29, 2018 10:31 am
Forum: Non-Aviation
Topic: Putin Wants To Be President For Life
Replies: 180
Views: 8141

Re: Putin Wants To Be President For Life

https://www.bbc.com/news/world-europe-46617186

RU poverty rate. 1/5th ( rather unscientific, but what the heck.

compare US : 1/3rd of population can be seen as living in poverty.
-->

Aesma wrote:
Interesting article about life in Russia : https://www.bbc.com/news/world-europe-46617186

RU poverty rate. 1/5th ( rather unscientific, but what the heck.

compare US : 1/3rd of population can be seen as living in poverty.

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by WIederling
Sat Dec 29, 2018 10:02 am
Forum: Military Aviation & Space Flight
Topic: Kawasaki P-2 and C-2 for New Zealand?
Replies: 61
Views: 10016

Re: Kawasaki P-2 and C-2 for New Zealand?

TWA772LR wrote:
Does anyone know the outcome of this?


You get pages of hits on google. :-)

But SK and J are friends, aren't they?

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by WIederling
Sat Dec 29, 2018 8:22 am
Forum: Non-Aviation
Topic: Der Spiegel - "Institutional Bias"
Replies: 75
Views: 5278

Re: Der Spiegal - "Institutional Bias"

Just to qualify ImperialBirds sources: The Gatestone Institute (formerly Stonegate Institute and Hudson New York) is a right-wing[2][3][4] anti-Muslim[a] think tank with a focus on Islam and the Middle East. The organization has attracted attention for publishing false articles and being a source of...

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by WIederling
Sat Dec 29, 2018 8:17 am
Forum: Non-Aviation
Topic: Capital punishment in the US and Its future
Replies: 150
Views: 8311

Re: Capital Punihsment in the US and Its Future

No I don't want it to be comfortable. You think Ted Bundy's victims were smiling and comfortable when they died? I am sick of coddling people that hurt and kill others. You do the crime you accept the consequences. Strangely so many of those "BEARING THE CONSEQUENCES" seem to have been co...

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by WIederling
Fri Dec 28, 2018 9:04 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

leghorn wrote:
They are actually battery pouches not conventional CYLINDRICAL cells as you would imagine in any other EV


If you go over the video they aren't "pouches" like in RC model LiPo batteries either.
more like the prismatic cells you can get from Winston and its competitors.

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by WIederling
Fri Dec 28, 2018 8:34 pm
Forum: Technical/Operations
Topic: A350 with the same fuselage width as 787
Replies: 26
Views: 4871

Re: A350 with the same fuselage width as 787

Maybe the question is about the 2 approaches used in actually building the fuselages : barrels for the 787, panels for the A350 ? A350 is larger, has a much larger wing but does not fully reflect that in OEW increase. another 767 vs A330 runoff :-) Looks like the panel van approach results in light...

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by WIederling
Fri Dec 28, 2018 6:43 pm
Forum: Non-Aviation
Topic: Putin Wants To Be President For Life
Replies: 180
Views: 8141

Re: Putin Wants To Be President For Life

You are completely misinterpreting my comment. My point is the Russian people could care less of what is on the minds of Americans and in turn MOST Americans have zero interests in their people- considering we have tons of info & documentaries on their society vs their lacking of the same for u...

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by WIederling
Fri Dec 28, 2018 2:46 pm
Forum: Non-Aviation
Topic: Der Spiegel - "Institutional Bias"
Replies: 75
Views: 5278

Re: Der Spiegal - "Institutional Bias"

just for the fun of it: https://www.haaretz.com/polopoly_fs/1.6314113.1532516052!/image/3450377812.jpg_gen/derivatives/fullscreen_1104xAuto/3450377812.jpg https://www.haaretz.com/israel-news/.premium.MAGAZINE-why-expected-wave-of-french-immigration-to-israel-never-materialized-1.6312669

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by WIederling
Fri Dec 28, 2018 2:42 pm
Forum: Non-Aviation
Topic: Putin Wants To Be President For Life
Replies: 180
Views: 8141

Re: Putin Wants To Be President For Life

That makes no sense whatsoever. We should start taking in the views of the people re:Putin. That is tantamount to saying that we should consider the views of the people of Lil Kim in North Korea. You really think that the views of US rednecks are intellectual manna from democratic heaven? Few peopl...

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by WIederling
Fri Dec 28, 2018 1:21 pm
Forum: Non-Aviation
Topic: Der Spiegel - "Institutional Bias"
Replies: 75
Views: 5278

Re: Der Spiegal - "Institutional Bias"

More and more, the invented journalism is getting the spotlight. A good sign that at least some of the masses are stepping away from the kool-aid bowl . This appears to be the case where the latest attempt by NBC to lie to the public has been exposed. Here's the link to Breitbart: https://www.breit...

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by WIederling
Fri Dec 28, 2018 10:51 am
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 259
Views: 16453

Re: Electric planes: the state of the art

the Zoe I'm taking delivery of in 6 weeks time increased battery pack from 22kWh to 41 with only a 15kg weight increase. You overstate the issue. So, you think you're going to get 19kwh more capacity for 15kg weight with a 250wh (usable) per kg battery? Did you do the math for the million man march...

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by WIederling
Fri Dec 28, 2018 10:31 am
Forum: Non-Aviation
Topic: Capital punishment in the US and Its future
Replies: 150
Views: 8311

Re: Capital Punihsment in the US and Its Future

I invite you to read Gary Becker, Nobel economist There are no "Nobel" economists. It is a banksters hooraying the current "economic cuture creator" price. Worthless. The other worthless (but real) Nobel prize is the one for literature. Invariably abused for political purposes.

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by WIederling
Fri Dec 28, 2018 8:46 am
Forum: Non-Aviation
Topic: I want a girlfriend for Christmas
Replies: 80
Views: 5511

Re: I want a girlfriend for Christmas

L410Turbolet wrote:
Kiwirob wrote:
We’re I live a lot of the unable to find a women type men have Thai and Filipino wives, I went to norwegian course with a few of them.

They should have "L O S E R" branded on their foreheads.

pfft.

more like "feminism is a drag"

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by WIederling
Fri Dec 28, 2018 8:42 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 2799
Views: 511968

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

PlanesNTrains wrote:
I suppose they mean “failed to verify the calibration” or some such?


The text in discussion here is hearsay and supposition. irrelevant what was meant or not. fiction.

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by WIederling
Thu Dec 27, 2018 10:47 pm
Forum: Non-Aviation
Topic: Capital punishment in the US and Its future
Replies: 150
Views: 8311

Re: Capital Punihsment in the US and Its Future

By the way, the economically efficient criminal punishment would be rare convictions followed by extreme punishment. Involves low cost of policing and court, high deterrent effect. do I have to understand your position as "only those that are dumb enough to get caught will be punished, but tho...

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by WIederling
Thu Dec 27, 2018 10:41 pm
Forum: Non-Aviation
Topic: Capital punishment in the US and Its future
Replies: 150
Views: 8311

Re: Capital Punihsment in the US and Its Future

No I don't want it to be comfortable. You think Ted Bundy's victims were smiling and comfortable when they died? I am sick of coddling people that hurt and kill others. You do the crime you accept the consequences. Strangely so many of those "BEARING THE CONSEQUENCES" seem to have been co...

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by WIederling
Thu Dec 27, 2018 10:38 pm
Forum: Non-Aviation
Topic: I want a girlfriend for Christmas
Replies: 80
Views: 5511

Re: I want a girlfriend for Christmas

zakuivcustom wrote:
P.S. I've not been on a.net long enough, but is one really sure that this is the best place to ask for relationship advices? :ugeek:

More productive and/or entertaining than any Dr. Tilly answers your reproduction questions ...
same for contact pay sites.

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by WIederling
Thu Dec 27, 2018 10:35 pm
Forum: Military Aviation & Space Flight
Topic: Merkel's A343 diverts to CGN
Replies: 65
Views: 7652

Re: Merkel's A343 diverts to CGN

A journalist cited from a confidential report written by the German Air Force. - Lufthansa Technik maintains the plane - not only did the fault disable the comms system, but also disabled dumping fuel (at CGN, the plane landed overweight) - LH Technik made an error during maintenance. When they ins...

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by WIederling
Thu Dec 27, 2018 6:12 pm
Forum: Non-Aviation
Topic: I want a girlfriend for Christmas
Replies: 80
Views: 5511

Re: I want a girlfriend for Christmas

zakuivcustom wrote:
Seeing how caliboy93 never replied, ......


Maybe throwing stones and watching the waves spread :-?

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