Search found 10039 matches

by WIederling
Mon May 24, 2021 8:33 am
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 224
Views: 48256

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: 3219

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: 224
Views: 48256

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: 2290
Views: 259903

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: 2533

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: 3180

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: 26084

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: 19809

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: 224
Views: 48256

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: 3180

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: 26084

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: 3180

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: 3180

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: 437
Views: 59278

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: 7606

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: 4388

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: Updated: Reuters: Airbus launches A350 freighter
Replies: 1398
Views: 227521

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: 6634

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: Updated: Reuters: Airbus launches A350 freighter
Replies: 1398
Views: 227521

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: 1864

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: Updated: Reuters: Airbus launches A350 freighter
Replies: 1398
Views: 227521

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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by WIederling
Mon May 03, 2021 11:40 am
Forum: Non-Aviation
Topic: 10 Years Since Killing of Osama Bin Laden
Replies: 22
Views: 1864

Re: 10 Years Since Killing of Osama Bin Laden

Problems like Jews having homes? They had one ( After they displaced other indigenous people under order from their god.) They left it. ( What a hoot if the Brits came back to where i live now and demanded their land back. Nigh nobody ( as a distinct population ) today lives where their ancestors l...

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by WIederling
Mon May 03, 2021 7:21 am
Forum: Non-Aviation
Topic: 10 Years Since Killing of Osama Bin Laden
Replies: 22
Views: 1864

Re: 10 Years Since Killing of Osama Bin Laden

Sunday marked the 10 year anniversary of the killing of Osama bin Laden by US special forces in a compound in Pakistan and this was a very big moment in history. However, the threat of terror did not stop and has changed significantly since then. I did feel a sense of accomplishment when this event...

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by WIederling
Sun May 02, 2021 12:36 pm
Forum: Technical/Operations
Topic: A321 vs B739 Fuel burn
Replies: 32
Views: 6634

Re: A321 vs B739 Fuel burn

Wouldn't payload lost for range in the MTOW stretch of the payload/range chart be indicative?

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by WIederling
Sun May 02, 2021 10:30 am
Forum: Military Aviation & Space Flight
Topic: French Air Force Buys 8 H225M's and Leases 15 H225's
Replies: 13
Views: 3003

Re: French Air Force Buys 8 H225M's and Leases 15 H225's

Ya, I have a job with stuff like this too. But none of this is right. Imagine a world with non-stupid rules and how much better it could be ... What France did was stupid. (I think we agree on that). If wishes were ... it is not right. Most definitely not. But: In most cases no critique of dysfunct...

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by WIederling
Sat May 01, 2021 12:38 pm
Forum: Civil Aviation
Topic: Boeing aims to evenly spilt narrowbody aircraft market share
Replies: 234
Views: 22576

Re: Boeing aims to evenly spilt narrowbody aircraft market share

What do you consider Airbus has been up to then? Then are buying back shares as well and invested less in new product. Whereas Boeing's LTD remained flat from 2011 to 2018 at about $10B, Airbus almost tripled its debt from $2.8B to $7.5B. I'm well impressed that you spin higher debt for Boeing as a...

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by WIederling
Thu Apr 29, 2021 4:42 pm
Forum: Civil Aviation
Topic: Boeing aims to evenly spilt narrowbody aircraft market share
Replies: 234
Views: 22576

Re: Boeing aims to evenly spilt narrowbody aircraft market share

The thing is, everybody asks about market share all the time, especially now. Before MAX, I didn’t hear much about market share? Or is it just me? Before MAX "Airbus was just catching up". The unconvincing numbers could carefully be stepped around. ( Go back on A.net browse some product o...

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by WIederling
Thu Apr 29, 2021 4:10 pm
Forum: Non-Aviation
Topic: Lack of truck drivers in USA and problems from it
Replies: 69
Views: 4952

Re: Lack of truck drivers in USA and problems from it

Aren't immigrants interested in these jobs ? Asyl seekers/migrants are funneled into parcel delivery here ( Germany ). Very polite, very keen but they stumble on language barrier and not knowing their way around the rural area I live in. ( not knowing about drop points can't be tagged onto them: th...

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by WIederling
Wed Apr 28, 2021 4:12 pm
Forum: Military Aviation & Space Flight
Topic: Can we remake plastic waste into rocket fuel?
Replies: 22
Views: 3040

Re: Can we remake plastic waste into rocket fuel?

The new type of fuel ( remade from plastic has already been tested. The result of the test was pretty successfull, and has shown that the new type of rocket fuel is 1% - 3% better than kerosene by its energy characteristics. Frankly to say, I am not sure if this kind of fuel can be used for long sp...

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by WIederling
Tue Apr 27, 2021 5:56 pm
Forum: Military Aviation & Space Flight
Topic: Can we remake plastic waste into rocket fuel?
Replies: 22
Views: 3040

Re: Can we remake plastic waste into rocket fuel?

Also, I wanna add that there is an alternative kind of rocket that has a term ``hybrid rocket`` The term ``hybrid`` was given to it because it combines solid Hydroxyl Terminated Polybutadiene (HTPB) fuel and 90% Hydrogen Peroxide (H202) liquid oxidiser. "hybrid" rocket is any design that ...

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by WIederling
Tue Apr 27, 2021 5:44 pm
Forum: Civil Aviation
Topic: Updated: Reuters: Airbus launches A350 freighter
Replies: 1398
Views: 227521

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

datum1: according to a Peter Gerber interview 50% of freighter capacity is sold three days before the flight / only 50% of capacity is committed in a manner that allows foresight in dispatch planning.. That is a less grave problem. You have nn tonnes of capacity on a route. you sell ~50% as short t...

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by WIederling
Tue Apr 27, 2021 5:33 pm
Forum: Civil Aviation
Topic: Updated: Reuters: Airbus launches A350 freighter
Replies: 1398
Views: 227521

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

Originally Airbus was planning a very long range version (the A350R) based on the freighter version (or was it the other way around?). the "R" would have added weight to carry more fuel but also would need more fuel just to carry that added weight. The more elegant solution is to go the A...

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by WIederling
Tue Apr 27, 2021 4:35 pm
Forum: Military Aviation & Space Flight
Topic: French Air Force Buys 8 H225M's and Leases 15 H225's
Replies: 13
Views: 3003

Re: French Air Force Buys 8 H225M's and Leases 15 H225's

Normally one does lease-to-own where (1) the lessor has a access to a lower interest rate or (2) the buyer is not sure they want to buy, and there is a used market the provider can access. Different budget boxes. Buying is investment, leasing is (operations) cost. ? Maybe. But if so that's. stupid....

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by WIederling
Mon Apr 26, 2021 7:44 am
Forum: Military Aviation & Space Flight
Topic: Was the V22 tilt rotor the only candidate to replace the C2 ?
Replies: 52
Views: 6701

Re: Was the V22 tilt rotor the only candidate to replace the C2 ?

Aside from the issues with deck coating could a V22 land on a DDG ? Is there enough space ? I suppose it doesn’t matter if the engines and rotors are over the deck edge ? src: https://militaryfamilies.com/military-news/v-22-reaches-key-milestone-heads-to-navy-fleet/ New V-22 is designed specificall...

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by WIederling
Sun Apr 25, 2021 5:54 pm
Forum: Military Aviation & Space Flight
Topic: Was the V22 tilt rotor the only candidate to replace the C2 ?
Replies: 52
Views: 6701

Re: Was the V22 tilt rotor the only candidate to replace the C2 ?

https://www.f-16.net/forum/download/file.php?id=17415

no time read it ...
-->

par13del wrote:
So what are the chances of the V22 using the angle deck for a rolling take-off with cargo onboard, is the a/c capable of doing that?


This seems to go into depth on the topic.
https://www.f-16.net/forum/download/file.php?id=17415

no time read it ...

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by WIederling
Sun Apr 25, 2021 11:41 am
Forum: Non-Aviation
Topic: Just when I thought US politicians could never surprise me again...
Replies: 110
Views: 6159

Re: Just when I thought US politicians could never surprise me again...

Trump didn't force anything through, he filled an empty seat. It's a non issue as well since Biden doesn't have Sinema or Manchin on board with court packing. it is an escalating ping pong game. Each side introducing ever more partisan candidates. Nonetheless: the GOP side is in the lead in going o...

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by WIederling
Sun Apr 25, 2021 9:33 am
Forum: Military Aviation & Space Flight
Topic: Was the V22 tilt rotor the only candidate to replace the C2 ?
Replies: 52
Views: 6701

Re: Was the V22 tilt rotor the only candidate to replace the C2 ?

So, unless you are talking about the V22 in a ferry flight, E-2D has a higher MTOW. I actually completely covered this already. The highest MTOW for the V-22 is when it operates from a long runway, the same runway that the E-2 would operate from. The V-22 then has the higher MTOW on every flight. F...

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by WIederling
Sun Apr 25, 2021 9:26 am
Forum: Military Aviation & Space Flight
Topic: French Air Force Buys 8 H225M's and Leases 15 H225's
Replies: 13
Views: 3003

Re: French Air Force Buys 8 H225M's and Leases 15 H225's

kitplane01 wrote:
Normally one does lease-to-own where (1) the lessor has a access to a lower interest rate or (2) the buyer is not sure they want to buy, and there is a used market the provider can access.


Different budget boxes. Buying is investment, leasing is (operations) cost. ?

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by WIederling
Sun Apr 25, 2021 7:37 am
Forum: Non-Aviation
Topic: Why News is Not Covered as Well and as Accurately as in Times of Yore
Replies: 22
Views: 1751

Re: Why News is Not Covered as Well and as Accurately as in Times of Yore

And even if the message is translated perfectly... do you know which local news agency is serious and which is the local version of "the onion"... or worse, some local propaganda mouth piece? Everyone that speaks English knows Fox News is biased, but do you know if Algemeen Dagblad, Gazet...

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by WIederling
Sun Apr 25, 2021 7:30 am
Forum: Non-Aviation
Topic: Why News is Not Covered as Well and as Accurately as in Times of Yore
Replies: 22
Views: 1751

Re: Why News is Not Covered as Well and as Accurately as in Times of Yore

Forgot to mention and was reminded by the above. Many "news" sites aren't really news. They are opinion, with a semi permanent bias. Guess what the Hearst Empire got big on. News outlets leading their readership by the nose is not new. ( just read newspapers from around Europe just before...

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by WIederling
Thu Apr 22, 2021 4:18 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 259903

Re: Boeing CEO's Comments On Their Next Airplane

If they can't pay for airports, they also can't pay for airplanes. Personally I think it'll all end up in tears for the Chinese. They'll keep making lots of loans that won't get repaid. They'll have lots of influence over a really poor and unstable place. It might help secure raw materials, but tha...

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by WIederling
Thu Apr 22, 2021 7:18 am
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 259903

Re: Boeing CEO's Comments On Their Next Airplane

If they can't pay for airports, they also can't pay for airplanes. Personally I think it'll all end up in tears for the Chinese. They'll keep making lots of loans that won't get repaid. They'll have lots of influence over a really poor and unstable place. It might help secure raw materials, but tha...

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by WIederling
Tue Apr 20, 2021 6:40 am
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 259903

Re: Boeing CEO's Comments On Their Next Airplane

[*] Has anyone wondered if aisles have to be between seats? Why not have aisles on both sides of the plane with seats in the middle? ASSSSSSA (where A = aisle and S = seat). The current rule is that no seat can be more than 2 seats from an aisle, Your suggestion would violate that rule. No, it won’...

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by WIederling
Tue Apr 20, 2021 6:16 am
Forum: Non-Aviation
Topic: Mass Mental Illness In US - Redux
Replies: 14
Views: 1291

Re: Mass Mental Illness In US - Redux

Furthermore the culture still hasn't fully shifted to support those with mental heath issues as what they are sick. Sick who can be treated in many ways that we know work, such as antidepressants, exercise, talking to a counsellor. Women seem to be better and seeking out treatment and are much more...

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by WIederling
Mon Apr 19, 2021 5:30 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 259903

Re: Boeing CEO's Comments On Their Next Airplane

I think the A350 scare was a blessing, as it made the A350 better and moved it up to compete with the 777 and not the 787, which turned out to be a wise move. The XWB gestation is imu linked to the state of the 787 project. Around 2006 Airbus internally must have known about the hung up state of th...

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by WIederling
Mon Apr 19, 2021 3:33 pm
Forum: Military Aviation & Space Flight
Topic: Mars 2021 Trio Of Missions
Replies: 66
Views: 10101

Re: Mars 2021 Trio Of Missions

Yay! It's amazing how confident the engineers have grown, after Pathfinder, Sojourner and other rovers. Now it's time for new a subforum, "Extraterrestrial Aviation"... Chopper on Mars, quite the achievement. Venus could enable Zeppelins or "floating islands" at around the 1000m...

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by WIederling
Mon Apr 19, 2021 3:27 pm
Forum: Military Aviation & Space Flight
Topic: Hybrid rocket
Replies: 8
Views: 1335

Re: Hybrid rocket

As far as I know Skyhy works perfectly and it doesn`t have any of the problem with oxydizer and accomplishes well with all microgravity missions and experiments. ( delivers payloads to the orbit and makes different tests ) SkyHy is a two stage sounding rocket with Suborbital capabilities. the desig...

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by WIederling
Mon Apr 19, 2021 6:58 am
Forum: Non-Aviation
Topic: US presidents dealing with China
Replies: 15
Views: 1229

Re: US presidents dealing with China

Their adherence to United Nations Convention on the Law of the Sea is also more than just questionable.... Throw first stone when you are innocent :-) All the UN VETO powers, up front the US, have ignored anything they signed on occasion .. or in most cases. The US uses it solely for pressuring oth...

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by WIederling
Sun Apr 18, 2021 4:14 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 259903

Re: Boeing CEO's Comments On Their Next Airplane

seahawk wrote:
Boeing mentioned the all digital design and new production methods as key for the NMA.


Just catching up, isn't it?

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by WIederling
Sun Apr 18, 2021 3:16 pm
Forum: Non-Aviation
Topic: United States Mass Shooting Thread
Replies: 149
Views: 12032

Re: United States Mass Shooting Thread

But any international analysis shows that access to guns is not the only issue. Other developed countries with similar gun ownership rates still have far lower gun homicide rates. Restricting access would be a start, but the US clearly has deeper issues. "social tensions" to put mildly an...

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