Search found 5362 matches

by WIederling
Mon Feb 19, 2018 10:19 pm
Forum: Technical/Operations
Topic: Typical Epicyclic gear ratios
Replies: 4
Views: 150

Re: Typical Epicyclic gear ratios

Apologies. Should have mentioned this earlier. I am trying to design a Hybrid power train with a Gas turbine connected to the Planer Carrier, one electric machine (generator) connected to the Sun gear, the second electric machine (motor) is connected to the output shaft which itself is connected to...

Jump to post
by WIederling
Mon Feb 19, 2018 10:14 pm
Forum: Civil Aviation
Topic: Lufthansa Lockheed Super Star Restoration Project
Replies: 14
Views: 3039

Re: Lufthansa Lockheed Super Star Restoration Project

There had been a minor accident half a year ago. Here is a report with awsome pictures from last August. http://www.sunjournal.com/video-fire-suppression-foam-released-at-auburn-lewiston-municipal-airport/ "Monday morning walked into a wall of foam over their heads after a malfunction in the f...

Jump to post
by WIederling
Mon Feb 19, 2018 8:22 pm
Forum: Non-Aviation
Topic: From Russia with truth
Replies: 599
Views: 17265

Re: From Russia with truth

Actually post cold war only the military kept propaganda departments, which turned out to be a mistake. 3letter orgs, Outsourced, privatized. https://en.wikipedia.org/wiki/Nayirah_testimony one of the crasser activities. Overall there is quite a bit going on in that domain Targeting the local US me...

Jump to post
by WIederling
Mon Feb 19, 2018 8:15 pm
Forum: Civil Aviation
Topic: First Airbus A380 parked amid search for new operator
Replies: 206
Views: 77965

Re: First Airbus A380 parked amid search for new operator

Dutchy wrote:
Weren't the first couple of A380's also overweight?


In absolute numbers half of the 787 i.e. ~4t. performance overall better than brochure values.

Jump to post
by WIederling
Mon Feb 19, 2018 6:50 pm
Forum: Technical/Operations
Topic: Typical Epicyclic gear ratios
Replies: 4
Views: 150

Re: Typical Epicyclic gear ratios

So you want to run the sun gear @ 20krpm have the planet carrier run @ 2krpm and use the ring gear as reversed secondary take off ? then: there is this planetary gear differential around, symmetric. A differential is a PSD device. https://en.wikipedia.org/wiki/Epicyclic_gearing#Spur_gear_differential

Jump to post
by WIederling
Mon Feb 19, 2018 6:19 pm
Forum: Non-Aviation
Topic: In the UK KFC outlets run out of chicken.
Replies: 9
Views: 257

Re: In the UK KFC outlets run out of chicken.

DHL - drop it, hoof it. lose it !! Certainly lost it on this occasion. How could a company so large make such a mess of a contract ? It's not that difficult to collect raw chicken pieces from an abattoir and deliver them to 900 fast food joints, even easier for pre cut potatoes where is the chicken...

Jump to post
by WIederling
Mon Feb 19, 2018 4:41 pm
Forum: Non-Aviation
Topic: In the UK KFC outlets run out of chicken.
Replies: 9
Views: 257

Re: In the UK KFC outlets run out of chicken.

:confused: http://www.bbc.co.uk/news/business-43110910 They have 900 branches in the UK and 700 are closed because the chicken can't cross the road. It would appear that DHL has droppd the ball big time here, having just been awarded the contract they can not deliver. How is it possible that a comp...

Jump to post
by WIederling
Mon Feb 19, 2018 4:37 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

America stays strong by having it's populace armed and ready to fight. Whomever. When a tyrant like Hitler, or the Land of the Rising Sun, rises up and declares war on the world... It's been a 2nd Amendment Nation like the US, that comes to the rest of the world's rescue. Our existence while grotes...

Jump to post
by WIederling
Mon Feb 19, 2018 4:20 pm
Forum: Non-Aviation
Topic: From Russia with truth
Replies: 599
Views: 17265

Re: From Russia with truth

This is an indicator of how the Western propaganda machine tries to distort information. The name Vlad has nothing to do with the name Vladimir. And even more so Putin has nothing to do with Vlad III tsepesh. There is clearly a desire to associate Putin with some evil, which is disinformation and p...

Jump to post
by WIederling
Mon Feb 19, 2018 3:44 pm
Forum: Civil Aviation
Topic: If the L-1011 had only 2 engines, would it have been a success?
Replies: 33
Views: 6617

Re: If the L-1011 had only 2 engines, would it have been a success?

Indeed, hence the name of the company, airBUS, which they have been saddled with ever since. The thinking at the time was that passengers coming off of long haul 747s would want to continue their journey on a short haul connection with the same level of "wide body comfort" (yes they reall...

Jump to post
by WIederling
Mon Feb 19, 2018 3:38 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

You have a very odd obsession with the US. Physician, you may want to heal thyself. Your efforts to assimilate the rapidly increasing Muslim population in Germany are going terribly, and your far right parties are seeing electoral gains not seen since the 1930s. Perhaps you should spare us the lect...

Jump to post
by WIederling
Mon Feb 19, 2018 11:31 am
Forum: Civil Aviation
Topic: Airbus might push A320 family production rate to 70 aircraft per month
Replies: 108
Views: 9691

Re: Airbus might push A320 family production rate to 70 aircraft per month

https://leehamnews.com/2018/02/19/airbu ... -analysis/

is this some kind of third party induced rumor ping pong between AB and BA ?
-->

And suddenly both are heading for 70 :-)
https://leehamnews.com/2018/02/19/airbu ... -analysis/

is this some kind of third party induced rumor ping pong between AB and BA ?

Jump to post
by WIederling
Mon Feb 19, 2018 10:49 am
Forum: Military Aviation & Space Flight
Topic: A320 MPA as Orion / Atlantic Replacement, France , Germany
Replies: 34
Views: 1806

Re: A320 MPA as Orion / Atlantic Replacement, France , Germany

Kiwirob wrote:
Or thinking outside the square team up with BAe and utalise the equipment developed for the Nimrod MRA4.


Wasn't that scrapped and "cleaned" like the Avro Arrow Project ? i.e. unavailable for reuse as either hardware or knowhow.

Jump to post
by WIederling
Mon Feb 19, 2018 10:40 am
Forum: Civil Aviation
Topic: Aseman Airlines plane crash in Iran
Replies: 46
Views: 10999

Re: Aseman Airlines plane crash in Iran

Jouhou wrote:
Believe it or not half of Americans are aware of the situation.


Looks like neither half seems to have control over the wheel :-? Lead from the back.

Jump to post
by WIederling
Mon Feb 19, 2018 10:37 am
Forum: Non-Aviation
Topic: If a Texas sized asteroid was headed for Earth...
Replies: 40
Views: 804

Re: If a Texas sized asteroid was headed for Earth...

Ah, so stubborn persistence and a few ten of thousands of ICBMs would do it? Tommy1808, you've put my mind at rest. Not sure ICBMs can do that. They're not even designed to reach orbit, let alone escape velocity with any ability to track something that small... For a comparison: NK's last shot reac...

Jump to post
by WIederling
Mon Feb 19, 2018 10:12 am
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

seb146 wrote:
If you want a gun crazy country, why don't you immigrate to one, Nik?


Looking around there is no further "one up" available in that domain.
Next escalation level I can think of is where they shoot back in volley.
Don't think the "self defenders" will go there.

Jump to post
by WIederling
Mon Feb 19, 2018 10:03 am
Forum: Civil Aviation
Topic: Aseman Airlines plane crash in Iran
Replies: 46
Views: 10999

Re: Aseman Airlines plane crash in Iran

The benefits of lifting western sanctions on iranian aircraft purchases far outweighs concerns about military transport. It saves civilian lives. Sanctions as driven and controlled by the US are designed to disrupt a civilization. No real dual use military aspect at all. Most hit were things that w...

Jump to post
by WIederling
Mon Feb 19, 2018 9:58 am
Forum: Civil Aviation
Topic: Several European airlines struggling at MIA
Replies: 68
Views: 13259

Re: Several European airlines struggling at MIA

I think Europeans are bored with a Miami , it’s like a tiny overpriced version of Havana - unless they’re going on cruises Metropolitan Miami is three times bigger than Havana, fyi. How much of that is different than any run of the mill western metropolitan area? 10%? Havana in comparison is a full...

Jump to post
by WIederling
Mon Feb 19, 2018 9:48 am
Forum: Civil Aviation
Topic: If the L-1011 had only 2 engines, would it have been a success?
Replies: 33
Views: 6617

Re: If the L-1011 had only 2 engines, would it have been a success?

USSR had to design Tu-114 for intercontinental (especially transatlantic) traffic, going back to props, because no amount of redesign of Tu-104 into a quad gave a feasible plane. ... Why did they need a quad? The Tu-114 airliner ( derived from the Tu-95 ) completely outranged everything else availa...

Jump to post
by WIederling
Mon Feb 19, 2018 9:30 am
Forum: Civil Aviation
Topic: If the L-1011 had only 2 engines, would it have been a success?
Replies: 33
Views: 6617

Re: If the L-1011 had only 2 engines, would it have been a success?

AirbusA6 wrote:
The A300 is a smaller aircraft, especially in its width (only 8Y instead of 9Y)

But about the same capacity. ( though length isn't all that much different.)

Jump to post
by WIederling
Mon Feb 19, 2018 7:22 am
Forum: Civil Aviation
Topic: Several European airlines struggling at MIA
Replies: 68
Views: 13259

Re: Several European airlines struggling at MIA

2. On a related note, I have observed that much of what is labeled "political" and is thus removed by mods generally falls into two categories: things that are overtly offensive, or things that generate prolonged conflict. There is again a trend to remove rather factual observations that ...

Jump to post
by WIederling
Sun Feb 18, 2018 9:12 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

On a side note, a lot of the lectures about "mass killings" seem to come from Germans on this forum. Not really sure you guys should be doing any lecturing on the topic. Quite the contrary. We know about it from our past. ... and we've gone beyond that. So you could learn from German expe...

Jump to post
by WIederling
Sun Feb 18, 2018 5:51 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

Dutchy wrote:
Should you be allowed to protect yourself by any means? Does this right to protect yourself extend to your belongings?


Ones "rights" reach about half way to any body else and not any further.
How much does his "self defense" endanger others?

Jump to post
by WIederling
Sun Feb 18, 2018 3:47 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

It took two years before the US took an interest in the problems of Hitler in Europe. Hitler was Times Man of the Year in 1938. That after money was funneled to Germany in the 20ties to prop up an Austrian painter turned politician. Add the views held by Henry Ford as a taste byte of the time. Germ...

Jump to post
by WIederling
Sun Feb 18, 2018 3:04 pm
Forum: Non-Aviation
Topic: Luvvies Lament
Replies: 21
Views: 451

Re: Luvvies Lament

If Harvey W was always known as a bad one then why did the liberals in Hollywood adore him and promote him? Even those who lecture us on a wide range of topics held him up as a role model knowing full well that young females were allowing themselves to be abused just to break into the industry. Soc...

Jump to post
by WIederling
Sun Feb 18, 2018 3:00 pm
Forum: Military Aviation & Space Flight
Topic: Airbus concerned about German coalition's tougher stance on arm sales
Replies: 5
Views: 348

Re: Airbus concerned about German coalition's tougher stance on arm sales

Revelation wrote:
Seems his pleas for more defense spending are futile, no?


Don't despair, Lügen Ulla the transatlantic prostitute is here! ( lousy rhyming, I know.)
Guess why no German A400M is in flying conditions.

Jump to post
by WIederling
Sun Feb 18, 2018 2:19 pm
Forum: Non-Aviation
Topic: From Russia with truth
Replies: 599
Views: 17265

Re: From Russia with truth

Dutchy wrote:
You are forgiven and let's see if you truly mean it and change your tune..... Forgive me to being a sceptic ;)


Scorpius made an offer. Not an invitation to jeering.

Jump to post
by WIederling
Sun Feb 18, 2018 2:17 pm
Forum: Civil Aviation
Topic: Aseman Airlines plane crash in Iran
Replies: 46
Views: 10999

Re: Aseman Airlines plane crash in Iran

RIP to all onboard. Sad start to the aviation safety year. The ATR seems to have its fair share of incidents, featuring in 5 or 6 fatal crashes in the past few years? http://www.airsafe.com/events/models/atr.htm sandyb123 unsurprising. ART42/72 ~~1400 built more than 1000 still active mostly in sho...

Jump to post
by WIederling
Sun Feb 18, 2018 10:53 am
Forum: Civil Aviation
Topic: Aseman Airlines plane crash in Iran
Replies: 46
Views: 10999

Re: Aseman Airlines plane crash in Iran

That's really unfortunate, damn. I believe this airline still operates 727 aircraft, so yeah, they're quite old school... not sure how old the ATR in question is, but I'd be willing to say it has a few years on it at the very minimum. ATR 42/72 EP-ATS 391 Iran Aseman Airlines Serial number 391 Type...

Jump to post
by WIederling
Sun Feb 18, 2018 8:38 am
Forum: Non-Aviation
Topic: If a Texas sized asteroid was headed for Earth...
Replies: 40
Views: 804

Re: If a Texas sized asteroid was headed for Earth...

I have a hunch a good 80% of us would pass the final hours logged in to a.net, arguing over whether Airbus was better than Boeing, and betting how quickly Delta could get it's ops back up & running again after the "big bang". ja, ja, ja, ja,ja ,ja ... :-) how would the "reborn C&...

Jump to post
by WIederling
Sat Feb 17, 2018 9:56 pm
Forum: Technical/Operations
Topic: RR triple spool
Replies: 48
Views: 3438

Re: RR triple spool

LH707330 wrote:
I was referring to the weight of the nacelle with mixed vs. unmixed, not the overall chevron versus no chevron.


hehe.
I was looking more to sfc effects. :-)

Jump to post
by WIederling
Sat Feb 17, 2018 9:18 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

I'm not convinced either society has found a way to identify its unstable members and protect the public. dumb objective. What you do is reduce the pressure that breaks people. Some break earlier. some are less susceptible. You try to solve a major societal issue by looking only to the effect it ha...

Jump to post
by WIederling
Sat Feb 17, 2018 6:28 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

DfwRevolution wrote:
They are both mass killings by deranged people. Why obsess over the murder weapon?


planes are essential to transport. guns are about essential for nothing.

so having a pilot go bonkers is a necessary risk while saturating the environment with guns is not.

Jump to post
by WIederling
Sat Feb 17, 2018 6:26 pm
Forum: Civil Aviation
Topic: Airbus might push A320 family production rate to 70 aircraft per month
Replies: 108
Views: 9691

Re: Airbus might push A320 family production rate to 70 aircraft per month

With all due respect this thread is about Airbus potentially increasing their production rate and some concerns lessors have regarding a bubble. It is not an A vs B, who has the better backlog thread. If Airbus goes up to 70 planes a month and there is a Southeast Asia financial crisis, India has a...

Jump to post
by WIederling
Sat Feb 17, 2018 5:13 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

US Americans seem to go for psycho pharmaca and prescription opiates as a way to "ascend" . 2016 55,000 death, 18 per 100k ? That is quite a number! Europe: 3 per 100k, I know skies are fallin here. There have been 150 Americans killed in school shootings over the last 30 years. Andreas L...

Jump to post
by WIederling
Sat Feb 17, 2018 5:10 pm
Forum: Military Aviation & Space Flight
Topic: Swing Wings: How Did They Die Off?
Replies: 25
Views: 1198

Re: Swing Wings: How Did They Die Off?

https://www.cia.gov/library/center-for- ... 2Feb12.pdf
interesting read.
-->

mmo wrote:
I think you might want to do some research on the SR-71 and the A-12. Both designs were heavily influenced by the drive to minimize RCS.


https://www.cia.gov/library/center-for- ... 2Feb12.pdf
interesting read.

Jump to post
by WIederling
Sat Feb 17, 2018 5:00 pm
Forum: Civil Aviation
Topic: Airbus might push A320 family production rate to 70 aircraft per month
Replies: 108
Views: 9691

Re: Airbus might push A320 family production rate to 70 aircraft per month

It isn’t most orders will be cancelled, deferred, etc. The reality is that Airbus has had a 17% cancellation rate over the past three years when looking at net in year of cancellation. (I averaged three years since last year’s 23% cancellation rate was a bit of an anomaly and some may want to look ...

Jump to post
by WIederling
Sat Feb 17, 2018 4:10 pm
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

I think countries like in Eastern Europe where guns are practically illegal should set an example to the US. Eastern Europe is not an example to follow. Gun ownership is much higher than the official numbers show. It isn't without coincidence that violent crime with weapons vastly increased in West...

Jump to post
by WIederling
Sat Feb 17, 2018 10:24 am
Forum: Non-Aviation
Topic: Political discussions in the workplace
Replies: 29
Views: 717

Re: Political discussions in the workplace

I try not to discuss politics at work. Not worth the hassle to argue one's opinions with people who can't accept differing opinions without kickback. :checkmark: No upside and potentially a lot of downsides. Depends on how politics is viewed in that environment. rational or religious. It is bad tas...

Jump to post
by WIederling
Sat Feb 17, 2018 10:10 am
Forum: Non-Aviation
Topic: Political discussions in the workplace
Replies: 29
Views: 717

Re: Political discussions in the workplace

In retrospect, there probably should have been more workplace badgering going on in 1930s Germany. Just like in the US today that was more introduced top down than anything else. First there was derision for the "Braune Horden" then percention wise it was "suddenly" no longer wi...

Jump to post
by WIederling
Sat Feb 17, 2018 10:04 am
Forum: Non-Aviation
Topic: Florida shooting - Europe should set an example to the USA
Replies: 157
Views: 2672

Re: Florida shooting - Europe should set an example to the USA

You also make a lot less money and have less opportunity. You can have your 4 day work week. I will take the USA over your model any day. GDP PPP per working hour is virtually identical to the US in Germany. We work less because we chose to, and can afford it. Even without taking our children's mon...

Jump to post
by WIederling
Sat Feb 17, 2018 8:56 am
Forum: Technical/Operations
Topic: 2025ish A380-900NEO
Replies: 55
Views: 3866

Re: 2025ish A380-900NEO

I don't think this assumption holds much water given that the 779 has at least 5% improvements in both SFC and L/D, the only way for such a figure to pan out would be for the 779 to be significantly heavier than the 77W at takeoff, which would imply something like a 10% OEW delta between the 779 an...

Jump to post
by WIederling
Sat Feb 17, 2018 8:51 am
Forum: Technical/Operations
Topic: RR triple spool
Replies: 48
Views: 3438

Re: RR triple spool

LH707330 wrote:
Versus an unmixed bypass duct in general, chevron or not.


noise reduction via chevrons takes about .5 ..1% more fuel. so it is not a wash imu.

Jump to post
by WIederling
Fri Feb 16, 2018 9:41 pm
Forum: Technical/Operations
Topic: RR triple spool
Replies: 48
Views: 3438

Re: RR triple spool

LH707330 wrote:
I think the weight for the T700 includes the full mixed exhaust assembly, which is why it's quoted as being heavier. Incidentally, the mixed exhaust accounts for a roughly half-point reduction in drag.


Versus the chevroned 787 nacelle?

Jump to post
by WIederling
Fri Feb 16, 2018 8:43 pm
Forum: Civil Aviation
Topic: Airbus might push A320 family production rate to 70 aircraft per month
Replies: 108
Views: 9691

Re: Airbus might push A320 family production rate to 70 aircraft per month

jeffrey0032j wrote:
Its already happening, young 10-12 year old A320s are being scrapped so that newer A320s can take their place.


Show me! ( beyond some A318 being worth more in parts than as an intact airframe.)

Jump to post
by WIederling
Fri Feb 16, 2018 6:48 pm
Forum: Non-Aviation
Topic: Robert Mueller Indicts 13 Russians
Replies: 67
Views: 1453

Re: Robert Mueller Indicts 13 Russians

A kangaroo's courtship ?

Jump to post
by WIederling
Fri Feb 16, 2018 6:40 pm
Forum: Military Aviation & Space Flight
Topic: A320 MPA as Orion / Atlantic Replacement, France , Germany
Replies: 34
Views: 1806

Re: A320 MPA as Orion / Atlantic Replacement, France , Germany

flipdewaf wrote:
Maybe the European governments should fund a new wing that can hold more fuel so that it can increase it's loiter time at an increased weight?

six ACT! look ito what the A319ACJ can do.

Jump to post
by WIederling
Fri Feb 16, 2018 12:45 pm
Forum: Technical/Operations
Topic: Feasibility of high altitude commercial aircraft
Replies: 6
Views: 1078

Re: Feasibility of high altitude commercial aircraft

Well the boom is where the shock cone ( initially rather flat gaining conicity with speed )
intersects the ground ( resp. the listener. :-)
My guess would be that FH shock cone never touches populated areas.
the initial ascend is vertical and only later turning slowly towards horizontal.

Jump to post
by WIederling
Fri Feb 16, 2018 11:13 am
Forum: Military Aviation & Space Flight
Topic: A320 MPA as Orion / Atlantic Replacement, France , Germany
Replies: 34
Views: 1806

Re: A320 MPA as Orion / Atlantic Replacement, France , Germany

Seeing that A320 so low without slats and flaps is a bit concerning ! This is clearly photoshopped! :) Wouldnt the Flight control software have to be modified in the real world for the A320 to be able to do this sort of thing? Why? Higher speed flight in ground proximity. no high lift needed. ( Loo...

Jump to post
by WIederling
Fri Feb 16, 2018 11:03 am
Forum: Technical/Operations
Topic: What makes the B737 an "old, outdated" design?
Replies: 143
Views: 9899

Re: What makes the B737 an "old, outdated" design?

Someone correct me if I'm wrong, but it seems (subjectively) to me like new MAXes are flying out the doors (pardon the pun). Could part of Boeing's motivation for keeping an elderly design alive this long with assorted updates is that the marginal cost increase for producing a new version is virtua...

Jump to post