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by planewasted
Wed Aug 05, 2020 10:10 pm
Forum: Travel, Polls & Preferences
Topic: How come even after all the 777Fs coming off the line, MD-11Fs are still going strong?
Replies: 58
Views: 11900

Re: How come even after all the 777Fs coming off the line, MD-11Fs are still going strong?

The main advantage the MD11 had against the 777 is that it is much better looking. :D

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by planewasted
Sat Jun 06, 2020 11:17 pm
Forum: Civil Aviation
Topic: Embraer's has projects for a new turboprop plane [June/2020]
Replies: 127
Views: 18418

Re: Embraer's has projects for a new turboprop plane [June/2020]

If they want to gamble they should make a 20 seat, short range, electric prop.

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by planewasted
Fri Jun 05, 2020 10:07 am
Forum: Non-Aviation
Topic: Invest in Airbus or Boeing
Replies: 27
Views: 2611

Re: Invest in Airbus or Boeing

Don't trust people who say it it over or under valued. Few, if any, can predict future stock prices except that it is likely that they will go up over a looong time period. The important thing to understand is that the airline industry is a high risk sector now. So potential for both high wins and l...

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by planewasted
Wed Jun 03, 2020 12:42 pm
Forum: Non-Aviation
Topic: What’s the last big purchase you made?
Replies: 115
Views: 5752

Re: What’s the last big purchase you made?

I bought global index funds for around $3000 yesterday. The last more expensive physical thing a bought was a Takamine acoustic guitar for around $2000 a year ago, have not regretted it for a second!

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by planewasted
Mon Apr 06, 2020 11:06 am
Forum: Technical/Operations
Topic: Service Ceiling Difference between A350-900 and -1000 (and 787-8/9 and -10)
Replies: 32
Views: 5303

Re: Service Ceiling Difference between A350-900 and -1000 (and 787-8/9 and -10)

The A350-1000 has a lower aspect ratio wing than the 900 (9.03 vs. 9.49 according do Wikipedia). I guess that could affect max altitude?

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by planewasted
Mon Mar 16, 2020 2:20 pm
Forum: Non-Aviation
Topic: What should we do with our money in the market
Replies: 50
Views: 2062

Re: What should we do with our money in the market

At the end of each month I always re-balance so I have 30% cash, 70% stocks (generic global funds). I see no reason to change my strategy.

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by planewasted
Wed Jan 22, 2020 5:43 pm
Forum: Civil Aviation
Topic: Newspaper: SAS is working on a new airline
Replies: 57
Views: 9844

Re: Newspaper: SAS is working on a new airline

kimimm19 wrote:
I thought SAS shorthaul was already low cost....

It's the model BA adopted.


It is something in between. Still free coffee and tea, free alcoholic drinks for diamond members and a proper frequent flyer program. You do not find that at low cost carriers.

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by planewasted
Wed Jan 08, 2020 10:22 am
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2719
Views: 293306

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

How many 737NG have crashed because of engine explosions? And how many hours have the 737NG flown?
Compared to the risk of departing from a country with all aircraft and missile defence on high alert?
Of course no proof yet but..

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by planewasted
Tue Nov 19, 2019 10:35 pm
Forum: Civil Aviation
Topic: Engine efficiency-what are the limits?
Replies: 64
Views: 7749

Re: Engine efficiency-what are the limits?

I think we have reached the current technology limits. See what happened to the new generation planes' engine on 320Neo; 787 and 777X..... I remember when I was a kid and SAS crashed an MD80 due to ice ingestion. Some SAS pilots complained about that the MD80 had too advanced and sensitive engines ...

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by planewasted
Tue Nov 19, 2019 4:16 pm
Forum: Technical/Operations
Topic: human-powered aircraft
Replies: 18
Views: 1639

Re: human-powered aircraft

A human powered blimp would be cool. No effort for staying up in the air required. You could fly around with little effort and enjoy the view. But a quick calculation gives that a 6 meter diameter sphere would be required to lift 120 kg of blimp and human. Would turn out pretty wind sensitive. And h...

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by planewasted
Wed Nov 13, 2019 4:13 pm
Forum: Civil Aviation
Topic: Cathay Pacific News and Discussion thread
Replies: 253
Views: 88103

Re: Cathay Pacific to cut capacity

At my company we are not allowed to travel to or via Hong Kong anymore. Exceptions need written management approval. Also, there has been reports of confiscated laptops. So laptops and mobile phones must now be completely cleared of company information before entering China.

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by planewasted
Fri Nov 01, 2019 10:15 am
Forum: Civil Aviation
Topic: Orders for new electric airliner now top 150
Replies: 22
Views: 5665

Re: Orders for new electric airliner now top 150

SierraPacific wrote:
Wait am I reading that they still need 500 million dollars to start producing aircraft for customers?

If so, I don't see this ending with this airplane in service anywhere.


That's about 1.5 % of the 787 program cost (32 billion).

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by planewasted
Wed Oct 23, 2019 9:13 am
Forum: Civil Aviation
Topic: Is the interior quality of B787 and A350 worse compared to older aircraft generations?
Replies: 96
Views: 26403

Re: Is the interior quality of B787 and A350 worse compared to older aircraft generations?

I think it is because the models are new. They minimized the weight of the interior, then some parts will wear out earlier than estimated and then be reinforced for future deliveries. I remember the same problem on the A380.

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by planewasted
Sat Sep 28, 2019 9:24 am
Forum: Civil Aviation
Topic: And the next: Air Tanzania A220-300 engine failure_26-Sep-2019
Replies: 36
Views: 12224

Re: And the next: Air Tanzania A220-300 engine failure_26-Sep-2019

So the tally for the year is 1 for Korean, 2 for Swiss and 1 for Air Tanzania? That is 4 out of 83 planes in service. That is a rate of about 1 in 20,000 flights. That is likely worse than the ETOPS requirement of 1 in 100,000 engine hours. I fail to see why the A220 was able to get ETOPS 180 appro...

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by planewasted
Mon Sep 16, 2019 10:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4380
Views: 663852

Re: Boeing 737MAX Grounded Worldwide Q3 2019

They just had the new FAA Administrator Scott Dickson on CNBC talking about the MAX. He is heading to Seattle this week to fly the fix in the SIM. In his own words "I will not let this plane return to service until it is the safest plane out there and I feel safe to put my own family on it&quo...

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by planewasted
Mon Sep 16, 2019 2:30 pm
Forum: Civil Aviation
Topic: Kenyan lawmaker wants to ban flatulence on airplanes
Replies: 57
Views: 10227

Re: Kenyan lawmaker wants to ban flatulence on airplanes

A friend of mine once ate a lot of durian and drank lots of beer with it before a flight. This resulted in a small uproar in part of the cabin. He did not dare to confess that it was him.

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by planewasted
Sun Aug 04, 2019 10:30 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4380
Views: 663852

Re: Boeing 737MAX Grounded Worldwide Q3 2019

This isn't good. Boeing knew about MCAS risk before the crashes. NEW YORK:  Even before the Lion Air and Ethiopian Airlines crashes claimed 346 lives, Boeing flight tests had revealed problems similar to those encountered by pilots on the ill-fated 737 MAX flights. Company officials learned that it...

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by planewasted
Fri Jul 26, 2019 8:30 am
Forum: Travel, Polls & Preferences
Topic: First Class Declining
Replies: 28
Views: 5585

Re: First Class Declining

My analysis: Premium classes don't sell by price, they sell by product quality (within reasonable limits). For example my last employer had the policy that as long as intercontinental tickets costed less than 7000$ it was acceptable. F was not allowed. So the airlines do small improvements to the bu...

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by planewasted
Fri Jul 19, 2019 7:02 am
Forum: Civil Aviation
Topic: Boeing Expects a $5.6 Billion Hit for 737 Max Disruptions
Replies: 128
Views: 16179

Re: Boeing Expects a $5.6 Billion Hit for 737 Max Disruptions

$5.6b actually doesn't sound that bad. The article refers to USD5.6 plus a further USD 1.7 to be spread over future accounting periods. I am not challenging that it doesn't sound too bad, but just clarifying the actual cost announced. That's 7.2 billion in total. The A350 development cost was 12.38...

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by planewasted
Fri Jul 19, 2019 6:09 am
Forum: Civil Aviation
Topic: How Little Cargo Revenue Really Matters For DL And UA
Replies: 89
Views: 12602

Re: How Little Cargo Revenue Really Matters.

Other than mail, how much cargo are US airlines going to move around the USA on NB jets? Compare that to the number of people flying domestically and you see why cargo is such a small part of it. And are they really going to effectively compete with fedex and ups? UPS and Fedex packages often trave...

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by planewasted
Thu Jul 18, 2019 7:34 am
Forum: Civil Aviation
Topic: “Dear American Airlines, I Hate You With My Whole Heart.” writes disgruntled traveler
Replies: 179
Views: 25832

Re: “Dear American Airlines, I Hate You With My Whole Heart.” writes disgruntled traveler

Is this a US thing? I have removed the first leg on both Norwegian and BA on a return ticket within Europe without problems. In the Norwegian case I just called and told them that I will not take the outgoing flight, so you can sell that seat to someone else. In the BA case the outgoing flight was d...

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by planewasted
Tue Jul 16, 2019 9:40 am
Forum: Technical/Operations
Topic: Solar batteries on airliner skin
Replies: 27
Views: 3090

Re: Solar batteries on airliner skin

The problem with electric jets is the propulsion itself. Propellers can pretty easily be powered with electric motors, but rushing air through a turbine at supersonic speeds (which you need in order to get to jet airliner speeds) is not very easily done. /Fredrik Most of the thrust on a commercial ...

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by planewasted
Tue Jul 16, 2019 8:58 am
Forum: Non-Aviation
Topic: Fees on assigned seating, now on trains
Replies: 13
Views: 1262

Re: Fees on assigned seating, now on trains

Reminds me of when I have payed for at seat but had to stand on a five hour trip because they changed to a smaller train for some reason. I got 50 kronor (~ 5 $) back because that was the price for the seat reservation. State monopoly for the win!

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by planewasted
Tue Jul 16, 2019 8:15 am
Forum: Technical/Operations
Topic: Solar batteries on airliner skin
Replies: 27
Views: 3090

Re: Solar batteries on airliner skin

Solar cells can be made very thin and light. So I think it will happen eventually. But the technology is not mature yet. MIT cell with a thickness of 1/50 of human hair, producing 6 W per gram (A quick calculation that might be wrong gave me that a jet engine produces about 20 W/g): https://newatlas...

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by planewasted
Fri Jul 12, 2019 11:14 pm
Forum: Travel, Polls & Preferences
Topic: What will be the next revolution in air travel?
Replies: 13
Views: 1513

Re: What will be the next revolution in air travel?

Small electric taxi service drones for short jumps. About 20 years away.

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by planewasted
Sun Jun 30, 2019 12:10 pm
Forum: Non-Aviation
Topic: Americans and electric stoves
Replies: 95
Views: 6223

Re: Americans and electric stoves

Gas-wise. I just redid my US kitchen with Gagganeau modular cooktops. They have natural gas and propane options. I get natural gas piped to the house. My stove includes a wok burner that's 5/5kw/19,000 BTU. I'd like to see electric do something with that. There are induction hobs with that power. A...

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by planewasted
Sat Apr 13, 2019 1:46 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 746251

Re: B737MAX Grounded Worldwide

Yes, with 5 sensors, each of which has a 20% failure rate, the chance of any one of the sensors failing is 100%. That does not mean that you will get a failure every time, because sometimes you will get multiple failures and sometimes you will get zero failures. You get it wrong. Sorry. 100% probab...

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by planewasted
Tue Mar 19, 2019 12:59 pm
Forum: Travel, Polls & Preferences
Topic: Unusual incidents in commercial aviation
Replies: 39
Views: 5688

Re: Unusual incidents in commercial aviation

https://www.nytimes.com/1987/04/01/us/f ... fault.html
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I read a story about an airliner that hit a fish in midair. Supposedly dropped by a bird.
Edit: Story:
https://www.nytimes.com/1987/04/01/us/f ... fault.html

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by planewasted
Thu Mar 07, 2019 9:41 am
Forum: Non-Aviation
Topic: Imperial System
Replies: 230
Views: 10076

Re: Imperial System

Would be great if we all spoke the same language too. Just image how much language difficulties costs us per year! And why not eat the same food everywhere?

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by planewasted
Fri Feb 15, 2019 2:58 pm
Forum: Non-Aviation
Topic: Buying a replacement......what would you do?
Replies: 13
Views: 773

Re: Buying a replacement......what would you do?

I would just check the Voltage and Current requirements, if it wants AC or DC (most probably DC but check!) and connect my laboratory power supply to it. If something more portable is required just buy a power supply with similar ratings.

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by planewasted
Thu Jan 31, 2019 3:04 pm
Forum: Civil Aviation
Topic: MD-11 Safety Discussion
Replies: 176
Views: 22930

Re: MD-11 Safety Discussion

There are no safe planes, or unsafe planes.
But there are more or less safe planes. And the MD-11 is obviously less safe than similar planes from the same time era.

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by planewasted
Thu Jan 24, 2019 5:59 pm
Forum: Non-Aviation
Topic: Speedlimit on the autobahn?
Replies: 73
Views: 4952

Re: Speedlimit on the autobahn?

Why should you be allowed to drive at 250 km/h? Having about half a kilometer of stopping distance is not safe no matter how alert you are.

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by planewasted
Wed Jan 09, 2019 12:18 pm
Forum: Technical/Operations
Topic: Longitidunal axis CoG on B717/A220
Replies: 12
Views: 2070

Re: Longitidunal axis CoG on B717/A220

Some quick calculations to add to the discussion (correct if totally wrong). Lets say a passenger and seat weighs 100 kg in average. That weight is on average 0.3 meters from the center line. plane has 30 rows. That gives an extra moment of: 0.3*100*30 = 900 kgm. An A220 has a wingspan of 35 meters....

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by planewasted
Fri Dec 28, 2018 2:05 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 260
Views: 18486

Re: Electric planes: the state of the art

So how far does 1 hour of endurance get you? 1 hour endurance minus diversion, holding and final reserves equals zero endurance. Jet fuel powered aircraft are reaching towards 20 hours of range. However, don't forget that your batteries won't get much lighter towards the end of the flight, which is...

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by planewasted
Thu Dec 27, 2018 4:15 pm
Forum: Civil Aviation
Topic: Electric planes: the state of the art
Replies: 260
Views: 18486

Re: Electric planes: the state of the art

Tesla 2170 battery has considerably higher energy density than you are claiming. At individual cell levels, specific energy density of li-ions is exceeding 250Wh per kg. However, you need to remember that cells need to be put in packs and then they need to be interconnected, sensors, fixtures, prot...

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by planewasted
Fri Nov 23, 2018 10:23 am
Forum: Non-Aviation
Topic: How populist are you?
Replies: 55
Views: 3065

Re: How populist are you?

I don't understand what gay rights and church authority has to do with left and right..?
I'm a non-populist slightly slightly to the left BTW.

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by planewasted
Thu Nov 08, 2018 10:10 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 611546

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

Autonomous systems connected to flight controls should of course not act on bad sensor data. How can you argue against that? But it can happen anyway. No design is perfect, so pilots should be prepared to handle such events. Turkish Airlines Flight 1951 crashed because of a bad sensor setting the en...

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by planewasted
Mon Oct 08, 2018 9:52 am
Forum: Civil Aviation
Topic: Airbus , just stretch the A320NEO a few rows, 200 seats.
Replies: 91
Views: 16603

Re: Airbus , just stretch the A320NEO a few rows, 200 seats.

The 737-9 is not selling because of the 737-10. So making a A320.5 seems like a bad idea.

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by planewasted
Wed Aug 15, 2018 6:05 am
Forum: Non-Aviation
Topic: Most Annoying Sound
Replies: 36
Views: 1577

Re: Most Annoying Sound

A pack of drunk teenage girls on the subway.

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by planewasted
Tue Aug 14, 2018 5:52 pm
Forum: Travel, Polls & Preferences
Topic: LH mid-haul narrowbody business class
Replies: 15
Views: 2367

Re: LH mid-haul narrowbody business class

It's the same as BA and others. Some very long flights with just the middle seat blocked. I guess if it made sense they would but if people pay for it then there is no reason to change. It also gives a lot more flexibility as the business configuration can change to match demand on the route which ...

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by planewasted
Thu Aug 02, 2018 10:03 am
Forum: Civil Aviation
Topic: Air Caraibes A350 3-4-3 in Y
Replies: 37
Views: 6717

Re: Air Caraibes A350 3-4-3 in Y

How does this compare to a 2-4-2 767? I flew a 2-4-2 767 8 hours recently and it was bad, but not THAT bad. It might have helped that I was seated next to my girlfriend. Would have been worse touching shoulders with a stranger.

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by planewasted
Fri Jul 20, 2018 11:23 am
Forum: Non-Aviation
Topic: The correct home data backup software
Replies: 14
Views: 707

Re: The correct home data backup software

https://en.m.wikipedia.org/wiki/Rsync
Probably already installed if you run MacOS.
You will need to read a little to learn it but it is what many "pros" (and amateurs as me) use.
-->

rsync
https://en.m.wikipedia.org/wiki/Rsync
Probably already installed if you run MacOS.
You will need to read a little to learn it but it is what many "pros" (and amateurs as me) use.

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by planewasted
Thu Jul 19, 2018 8:51 pm
Forum: Civil Aviation
Topic: A380 - Two VERY Different Views of the Future
Replies: 217
Views: 30486

Re: A380 - Two VERY Different Views of the Future

I don't buy the argument that the efficiency per seat is too bad. Why do carriers configure it in such a low density then? They can easily improve efficiency and still offer a superior comfort. An 11 abreast A380 is more comfortable than a 10 abreast 777 or 9 abreast 787. I think the A380 is simply ...

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by planewasted
Sat Jul 07, 2018 9:55 pm
Forum: Non-Aviation
Topic: FIFA World Cup Thread
Replies: 323
Views: 13211

Re: FIFA World Cup Thread

Time to make the Englishmen cry. Go Sweden!! If Sweden loses it is not a big deal. If England loses? Oh my.... Not so fast! ;) Englands worst player was better than Swedens best today. Congrats England. Felt like the Swedish team (and all swedes) was satisfied with getting this far already when the...

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by planewasted
Sat Jul 07, 2018 12:00 pm
Forum: Non-Aviation
Topic: FIFA World Cup Thread
Replies: 323
Views: 13211

Re: FIFA World Cup Thread

Time to make the Englishmen cry. Go Sweden!!

If Sweden loses it is not a big deal. If England loses? Oh my....

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by planewasted
Sat Jul 07, 2018 11:57 am
Forum: Civil Aviation
Topic: Shenzhen Airlines SZX-LHR to launch on Oct 30
Replies: 7
Views: 2468

Re: Shenzhen Airlines SZX-LHR to launch on Oct 30

Nice. Transferring to Shenzen from Hong Kong is annoying and takes a lot of time. Border controls and such.

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by planewasted
Fri Jul 06, 2018 3:45 pm
Forum: Travel, Polls & Preferences
Topic: What are driving some routes ?
Replies: 32
Views: 3695

Re: What are driving some routes ?

I have never seen so many people with Windows Phones as when I flew LHR-SEA.

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