Search found 10018 matches

by WIederling
Fri Jun 18, 2021 8:37 am
Forum: Military Aviation & Space Flight
Topic: Space debris removing mission
Replies: 1
Views: 151

Re: Space debris removing mission

I know about work at DLR and some Aussie university.
Mostly LASER based ablation decell.

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by WIederling
Fri Jun 18, 2021 8:35 am
Forum: Civil Aviation
Topic: Boeing MAX-10 First Flight Thread
Replies: 159
Views: 21661

Re: Boeing MAX-10 First Flight Thread

Noshow wrote:
It's good to see the MAX back in the business. The -10 could be one of the more promising variants.


A good replacement for the -9. But does it go beyond that?

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by WIederling
Tue Jun 15, 2021 6:52 am
Forum: Non-Aviation
Topic: EU Won't Call Out China On Rights Abuses
Replies: 82
Views: 2851

Re: EU Won't Call Out China On Rights Abuses

So anytime we help Europe, it's because it's in our interest but anytime there's a problem outside of Europe, it's not Europe's problem. Got it! hammer in hand thing. The US hammer is deadly force and corruption. ( and they have a thing for unpremeditated use of same ) The EU hammer is soft power. ...

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by WIederling
Tue Jun 15, 2021 6:46 am
Forum: Military Aviation & Space Flight
Topic: Space junk
Replies: 26
Views: 2007

Re: Space junk

Where actually is the difference between 10k pieces of space junk and commercial system consisting of the same number of independently orbiting items? Working satellites, assuming they have some means to change their orbit, can avoid collisions and can be deorbited in a controlled fashion. That mak...

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by WIederling
Mon Jun 14, 2021 4:48 pm
Forum: Military Aviation & Space Flight
Topic: Space junk
Replies: 26
Views: 2007

Re: Space junk

Where actually is the difference between 10k pieces of space junk and
commercial system consisting of the same number of independently orbiting items?

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by WIederling
Mon Jun 14, 2021 6:46 am
Forum: Civil Aviation
Topic: Airbus focus is on evolving existing jet models, CEO says
Replies: 129
Views: 17386

Re: Airbus focus is on evolving existing jet models, CEO says

It would be utterly illogical for Airbus to strike first with an all-new offering in that segment, when they already have an uncontested product that is selling fast, to everything from global hub carriers to LoCos. culture clash. Having your customer over a barrel and and have him feel it in publi...

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by WIederling
Sun Jun 13, 2021 4:33 pm
Forum: Civil Aviation
Topic: Airbus focus is on evolving existing jet models, CEO says
Replies: 129
Views: 17386

Re: Airbus focus is on evolving existing jet models, CEO says

It would be utterly illogical for Airbus to strike first with an all-new offering in that segment, when they already have an uncontested product that is selling fast, to everything from global hub carriers to LoCos. culture clash. Having your customer over a barrel and and have him feel it in publi...

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by WIederling
Sun Jun 13, 2021 1:08 pm
Forum: Non-Aviation
Topic: Trump's Administration was the Deep State
Replies: 40
Views: 2203

Re: Trump's Administration was the Deep State

Trump and William Barr went out and got subpoena's from private companies to run surveillance on Political Enemies, and then got gag orders to hide keep the companies from informing the private citizens that their data was being monitored. This was done at least as far back as Bush43. ( illegal acc...

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by WIederling
Sun Jun 13, 2021 12:11 pm
Forum: Non-Aviation
Topic: Operation Trojan Shield
Replies: 15
Views: 1292

Re: Operation Trojan Shield

The interesting thing about this is that it's going to undermine criminals' confidence in ANY encryption service. No doubt thousands of mobile phones have been quickly dumped. Not a new feeling. Remember that Swiss "trojan" encryption company subverted over decades by US and German intell...

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by WIederling
Sun Jun 13, 2021 12:04 pm
Forum: Non-Aviation
Topic: EU Won't Call Out China On Rights Abuses
Replies: 82
Views: 2851

Re: EU Won't Call Out China On Rights Abuses

Trump's years in power have been incredibly destructive for the relationships with Europe, that in return isn't that willing to follow USA blindly for a little bit of room under the umbrella any more. Don't forget, that the US had to deal with the likes of Chirac, Macron, Merkel, Schroeder, Juncker...

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by WIederling
Fri Jun 11, 2021 1:09 pm
Forum: Technical/Operations
Topic: Is the UDF Engine Back from the Dead?
Replies: 24
Views: 3675

Re: Is the UDF Engine Back from the Dead?

Higher RPM. That being said, it isn't that much higher. A turboprop prop maxes out under 2000rpm. A turbofan fan spins at around 3000rpm. Not quite that much. The GE36 UDF had a fan blade tip speed of 780 feet per second (238 meters per second) at cruise and 850 fps (259 mps) at takeoff ( UDF desig...

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by WIederling
Fri Jun 11, 2021 1:01 pm
Forum: Civil Aviation
Topic: A350F. Airbus looking to launch: Looking for customers
Replies: 723
Views: 99160

Re: A350F. Airbus looking to launch: Looking for customers

They are out of luck till they have a "777X" certified to tack an "F" on. The view to its future is diffuse :-) Why can’t they launch it without certification? What is the difference between any other program that launches with multiple variants. You bring 777-9 to market then b...

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by WIederling
Fri Jun 11, 2021 7:26 am
Forum: Civil Aviation
Topic: A350F. Airbus looking to launch: Looking for customers
Replies: 723
Views: 99160

Re: A350F. Airbus looking to launch: Looking for customers

I just hope Boeing is marketing and pushing as aggressively with their own 777XF. I believe they must protect freight market at all costs. Narrow body market is not currently their turf. No need to forgo widebody/freight market They are out of luck till they have a "777X" certified to tac...

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by WIederling
Fri Jun 11, 2021 7:18 am
Forum: Non-Aviation
Topic: Louie Gohmert's idea to fix climate
Replies: 29
Views: 1544

Re: Louie Gohmert's idea to fix climate

I believe Magneto once attempted to shift the Earth's axis - the X-Men stopped him from doing that. I'll give him a pass on the BLM acronym, but can't help if that was tongue-in-cheek on his part. Jules Verne described it better than 130 years ago. slight computational error nixed the project outco...

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by WIederling
Sun Jun 06, 2021 11:11 am
Forum: Civil Aviation
Topic: New A330 Wingtips?
Replies: 51
Views: 10676

Re: New A330 Wingtips?

smartplane wrote:
Hopefully all involved have rock solid IP protection.


About as much as Glatzer's APB winglets.

published idea and some prior art afair from before 2000.

Feathered tips are an old (bionics copy) idea.
Making them in a cost effective way may have been what that design style back.?

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by WIederling
Sat Jun 05, 2021 8:49 am
Forum: Non-Aviation
Topic: China and biological warfare story
Replies: 151
Views: 7945

Re: China and biological warfare story

What he means is simply this, if you are from America and you think that China is an enemy and you have the chance to observe the enemy, what would you rationally do. Would you be putting more resources in China or any other country to keep an eye on them or would you cut back the funding and take ...

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by WIederling
Sat Jun 05, 2021 8:44 am
Forum: Non-Aviation
Topic: China and biological warfare story
Replies: 151
Views: 7945

Re: China and biological warfare story

Or, you are willing to accept the collateral damage. See also, theoretical use of tactical nuclear weapons in Germany, 1946-1990. There is an operative around on the globe well known for not looking into consequences beyond direct effects. ( blowback like things are invariable unexpected and unfair...

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by WIederling
Fri Jun 04, 2021 1:36 pm
Forum: Military Aviation & Space Flight
Topic: Space junk
Replies: 26
Views: 2007

Re: Space junk

The most obvious decision we can take is to reduce the number of launches. Or make de-orbit mandatory, including requiring insurance for clean up if the de-orbit fails. What is your position on commercial entities setting up massive space segments for some project or other? ( Starlink comes to mind...

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by WIederling
Fri Jun 04, 2021 1:31 pm
Forum: Non-Aviation
Topic: China and biological warfare story
Replies: 151
Views: 7945

Re: China and biological warfare story

How do you weaponise a virus without it eventually infecting your own population? One of the defining feature of a weapon is that you can aim it. Or, you are willing to accept the collateral damage. See also, theoretical use of tactical nuclear weapons in Germany, 1946-1990. There is an operative a...

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by WIederling
Wed Jun 02, 2021 7:10 am
Forum: Civil Aviation
Topic: FAA Confirms Boeing Halts 787 Deliveries
Replies: 108
Views: 24563

Re: FAA Confirms Boeing Halts 787 Deliveries

Just so sad to see what Boeing's become. They only deliver two pax plane products (737MAX and 787), both have been grounded multiple times, and IINM they both hold the narrowbody and widebody records for grounding, as well as the former with the all-time grounding record for a plane returned to ser...

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by WIederling
Tue Jun 01, 2021 5:24 pm
Forum: Civil Aviation
Topic: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing
Replies: 224
Views: 31647

Re: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing

There is the main difference between the 737 and the A320 the FBW. Yet FAA and EASA are doing a deep dive on the 777X which is Boeing's third generation of FBW. I don't think having FBW will grant any degree of regulatory immunity to what we refer to as A322. ... I agree. In this regard Airbus will...

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by WIederling
Tue Jun 01, 2021 5:04 pm
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

Pictures above, seem to be aft looking forward, its more clear in the press release image. But you can see the attachment points for the rear wing to body fairings and also in both, the area painted with a white topcoat would be what is under those fairings showing, rest is the green primer ready f...

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by WIederling
Sun May 30, 2021 12:01 pm
Forum: Military Aviation & Space Flight
Topic: China's Long March 5B rocket ( CZ-5B R/B ) to re-enter and crash to earth, but where??
Replies: 27
Views: 2452

Re: China's Long March 5B rocket ( CZ-5B R/B ) to re-enter and crash to earth, but where??

Look on the bright side, Moo. In America, you've got the freedom to criticize the government. In the PRC, you've also got the freedom to criticize the US government. Bit of a Radio Jerewan thing, isn't it :-) Q: is it true that in the west everyone has a car? A: in principle yes. But we have the pa...

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by WIederling
Sun May 30, 2021 11:56 am
Forum: Military Aviation & Space Flight
Topic: China's Long March 5B rocket ( CZ-5B R/B ) to re-enter and crash to earth, but where??
Replies: 27
Views: 2452

Re: China's Long March 5B rocket ( CZ-5B R/B ) to re-enter and crash to earth, but where??

As the above states, the US has some blame here, ...... IMU this was direct fall out from the US assuming control over space ( if by words only ) the A-Sat test was a kind of "Think Again" hint. Then and IMHO : China is moving much faster through industrialization including "getting ...

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by WIederling
Sun May 30, 2021 11:45 am
Forum: Civil Aviation
Topic: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing
Replies: 224
Views: 31647

Re: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing

Trading A320 family commonality for range & belly space. If they manage to backport the new single slotted flap design and some other enhancements to the smaller models they have actually gained commonality : single flap design (with improved aero) over the whole family. The Xtra Tank is a &quo...

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by WIederling
Fri May 28, 2021 7:22 am
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

I guess we see the aft wall of the tank and a cuboid extension to it? Any insights on what this does? Clearly not using all of the available volume for fuel... https://airbus-h.assetsadobe2.com/is/image/content/dam/products-and-solutions/commercial-aircraft/a320-family/a321/First-delivery-RCT-A321x...

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by WIederling
Thu May 27, 2021 5:41 am
Forum: Civil Aviation
Topic: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing
Replies: 224
Views: 31647

Re: Bloomberg: Airbus Backs Lightweight Wing to Preserve Its Lead Over Boeing

JetBuddy wrote:
That's not necessarily true. Airbus could launch first because they know Boeing is planning an all new model. This would be a repeat of the NEO vs Max situation. And we all know how that one turned out.


In all truth Airbus did not preempt Boeing in that case. They called a bluff.

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by WIederling
Mon May 24, 2021 10:16 am
Forum: Technical/Operations
Topic: DL A359 MTOW?
Replies: 7
Views: 1597

Re: DL A359 MTOW?

It's easy to reduce MTOW on paper, but can earlier builds get a higher MTOW on paper as well? I don't have an answer for that. I'd risk that it's not only a paper upgrade, but also some hardware upgrade - but take it with a pinch of salt. Perhaps someone else is able to confirm. AFAIR: Batch 1 was ...

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by WIederling
Mon May 24, 2021 8:39 am
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

I have no idea of pressure inside "regular" tanks, but from general perspective it makes sense to somewhat pressurize them in flight, at least as much as inerting system would. No gas exchange with the main cabin volume, sure. That would be an ancillary detail. IS the tank inside or outsi...

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by WIederling
Mon May 24, 2021 8:33 am
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

From a Premium Aerotec presser from Sept. 2019 ( while looking for more conducive images): When building the rear center tank for the A321 XLR, the company benefits from its extensive experience in manufacturing the Eurofighter fuselage center section, which is also produced in Augsburg and contains...

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by WIederling
Sun May 23, 2021 11:41 am
Forum: Military Aviation & Space Flight
Topic: Will there be another STOVL fighter ?
Replies: 25
Views: 2339

Re: Will there be another STOVL fighter ?

It depends if countries keep building carriers without catapults. Well that’s kind of backwards, VSTOL fighters such as the Harrier and F35B came first, then the RN and a few other nations realized they could be operated on much smaller ships without arresting gear or catapults No one’s going to bu...

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by WIederling
Sun May 23, 2021 7:33 am
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

Thank you for your insight! I'll follow up with two more questions: - Being an integral tank but inside the pressure hull, how does the section with a full tank expand when climbing? Does something like Avogadro exist for liquids? - Similarly, would the stresses on forward and aft walls of the tank...

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by WIederling
Tue May 18, 2021 5:28 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2145
Views: 223976

Re: Boeing CEO's Comments On Their Next Airplane

EAARbrat wrote:
morrisond wrote:
I know your talking about production targets because it couldn't be quality targets as they never ever hit those on anything they produce.


You get what the Chinese producer was paid for.
.. What do you actually expect to get for "short to nothing" ?

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by WIederling
Tue May 18, 2021 6:33 am
Forum: Technical/Operations
Topic: FAA putting inspections on 737-300, -400, and -500 Autothrottle wiring
Replies: 13
Views: 1966

Re: FAA putting inspections on 737-300, -400, and -500 Autothrottle wiring

SJ182 took off into an area of thunderstorms and crashed, but this wire is what they find suspicious? I’m not trying to defend Boeing, but it feels like the world is bending over backwards to exonerate crews that made fatal errors by blaming the automation. Have you had a look into REALITY? Not tak...

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by WIederling
Mon May 17, 2021 6:37 am
Forum: Non-Aviation
Topic: US fuel pipeline cyber-attack, fuel shortages maybe
Replies: 41
Views: 2583

Re: US fuel pipeline cyber-attack, fuel shortages maybe

c933103 wrote:
Wake up call on the need of strengthening infrastructure cybersecurity


"Do unto others ... "

has come home to roost.

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by WIederling
Sun May 16, 2021 3:36 pm
Forum: Non-Aviation
Topic: Rocket attacks in Israel
Replies: 434
Views: 20623

Re: Rocket attacks in Israel

Why the hell is the US involved in this conflict Some nonsense about Israel being the only democracy in the "Middle East", and why that is important. Say the wrong words and jewish interests will be all over you worse than the GunFans. Career Termination. This is getting traction as a sha...

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by WIederling
Fri May 14, 2021 6:48 pm
Forum: Civil Aviation
Topic: Airbus puts supply chain executive at helm of A220
Replies: 139
Views: 19054

Re: Airbus puts supply chain executive at helm of A220

I have to wonder why Airbus didn't can the A319neo completely...at hot and high, the A320neo is just as capable as the A319 is at hot and high airports. That would make the A220-300 basically unchallenged in the 150-seat market. Airbus is competing against itself, especially since the range differe...

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by WIederling
Fri May 14, 2021 6:28 pm
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 218
Views: 41240

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

Long time lurker/learner. But this is too exciting not to post (and already more than a week old): Permium Aerotech delivers first Rear Center Tank to airbus, cf. Premium Aerotech Press Release . https://www.premium-aerotec.com/fileadmin/user_upload/data/fce/2021_05_04_Press_Release_-_First_Deliver...

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by WIederling
Fri May 14, 2021 1:10 pm
Forum: Non-Aviation
Topic: US fuel pipeline cyber-attack, fuel shortages maybe
Replies: 41
Views: 2583

Re: US fuel pipeline cyber-attack, fuel shortages maybe

I would expect based on this assessment that there is still plenty of fuel in the pipeline that will help alleviate the situation once the pressure builds up. How do you want to "empty" a pipeline? They all work by "push something in on one end and stuff will come out the other end&q...

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by WIederling
Thu May 13, 2021 7:08 am
Forum: Non-Aviation
Topic: Rocket attacks in Israel
Replies: 434
Views: 20623

Re: Another Powderkeg in Israel

Easy solution: Sterilize all orthodox Jews and Palestinians after the first child. After 40 years one can relax it to two children. Orthodox dogma encourages large families. The official rabbinate and religious courts will never allow your proposal. Stop allimentation of the "busy with reprodu...

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by WIederling
Thu May 13, 2021 7:03 am
Forum: Non-Aviation
Topic: US fuel pipeline cyber-attack, fuel shortages maybe
Replies: 41
Views: 2583

Re: US fuel pipeline cyber-attack, fuel shortages maybe

I would expect based on this assessment that there is still plenty of fuel in the pipeline that will help alleviate the situation once the pressure builds up. How do you want to "empty" a pipeline? They all work by "push something in on one end and stuff will come out the other end&q...

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by WIederling
Thu May 13, 2021 6:59 am
Forum: Non-Aviation
Topic: US fuel pipeline cyber-attack, fuel shortages maybe
Replies: 41
Views: 2583

Re: US fuel pipeline cyber-attack, fuel shortages maybe

Did Tesla see a surge in orders ? No the electrical grid is more vulnerable than the pipeline. Okie But you can make your own electricity. Gas, not really. There is wood gas(isfier) around: https://en.wikipedia.org/wiki/Wood_gas#Internal_combustion_engine Lots of use to the end of WWII here.

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by WIederling
Sun May 09, 2021 1:56 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 357
Views: 40064

Re: SpaceX - Tests, Launches, Developments - 2021

https://www.seattletimes.com/business/boeing-aerospace/space-junk-sleuths-track-down-the-rocket-chunks-that-lit-up-the-northwests-skies-last-month/ About a guy who hunted for the Falcon 9 upper stage debris when it landed in the northwestern United States... interesting stuff. (Partially relephant ...

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by WIederling
Sun May 09, 2021 9:16 am
Forum: Non-Aviation
Topic: Your view of a pull out from Afghanistan ?
Replies: 109
Views: 6686

Re: Your view of a pull out from Afghanistan ?

You want to blame Russia and the U.K.? Russia was in Afghanistan for 10 years, they left in 89, the U.K. hadn’t been involved in Afghanistan since 1919. The US has been screwing with Afghanistan since 2001. You didn’t need to invade, there wasn’t any justification for it. The US has been screwing w...

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by WIederling
Sat May 08, 2021 4:38 pm
Forum: Non-Aviation
Topic: Bill and Melinda Gates Divorcing
Replies: 56
Views: 3754

Re: Bill and Melinda Gates Divorcing

The reasons people do something don't really matter. Is it good or bad is all that matters. The B&M fundation might not always do good, but it seems to do alright. When I look at billionaires who spend their money buying politicians to get tax cuts and screw over the average people, I know who ...

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by WIederling
Sat May 08, 2021 2:03 pm
Forum: Civil Aviation
Topic: A350F. Airbus looking to launch: Looking for customers
Replies: 723
Views: 99160

Re: A350F. Airbus looking to launch: Looking for customers

Great find on the weight of the Wingboxes - so an A350XWB 319T Wingbox only weighs 5.1T? Yet Fred has the 352T 77X gaining 4T on top of the 77W which presumably would be about 7T as it lifts more but metal making it weigh about the same as the A380 wingbox that can lift what 575T? 77W, 777X is a fu...

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by WIederling
Wed May 05, 2021 5:47 pm
Forum: Technical/Operations
Topic: A321 vs B739 Fuel burn
Replies: 32
Views: 5566

Re: A321 vs B739 Fuel burn

But airliners don't fly full most of the time. In 2019 UA had around a 84% load factor. Wouldn't the load factor naturally increase on a smaller aircraft if for example 170 people want to fly on a certain day - a 737's LF would be higher than the 321's Smaller plane would have incurred a loss of re...

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by WIederling
Wed May 05, 2021 5:44 pm
Forum: Civil Aviation
Topic: A350F. Airbus looking to launch: Looking for customers
Replies: 723
Views: 99160

Re: A350F. Airbus looking to launch: Looking for customers

I was just estimating taking weight increase proportional to size increase. Take a look at my other post where it seems like Airbus is only shaving 6.4% off wing weight on A350 and 22% on the rest of the structure. Does that make any sense at all? linear scaling by 10% increases volume by 33% ( 1.1...

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by WIederling
Wed May 05, 2021 2:30 pm
Forum: Non-Aviation
Topic: 10 Years Since Killing of Osama Bin Laden
Replies: 22
Views: 1479

Re: 10 Years Since Killing of Osama Bin Laden

According to what Americans taking international relations courses in university are taught (at least I was), the royals had tens of billions of pounds in wealth prior to WW1. Could have gone a long way toward problem solving and cleaning up messes, but alas, guess not. Not saying at all independen...

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by WIederling
Wed May 05, 2021 10:43 am
Forum: Civil Aviation
Topic: A350F. Airbus looking to launch: Looking for customers
Replies: 723
Views: 99160

Re: A350F. Airbus looking to launch: Looking for customers

Airbus structural engineers can't do magic vs Boeing Engineers if given the same materials budget to work with - unless of course one manufacturer allows themselves to get closer to the margins of what a material is capable of. Not all engineers are created equal. Another item is starting with the ...

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