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Search: Posts Made By: MathFox
Showing results 1 to 35 of 288
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Forum: Rumours & News
25th Nov 2020, 11:36
Replies: 85
Views: 31,200
Posted By MathFox

Bull at a Gate There is a reason airlines...

Bull at a Gate

There is a reason airlines call for a doctor on the plane when there's a medical situation.

I look critical that the information that comes from official channels, because I look...
Forum: Rumours & News
18th Apr 2020, 07:24
Replies: 38
Views: 21,219
Posted By MathFox

I am a little bit more optimistic when I say that...

I am a little bit more optimistic when I say that approval for the vaccine could be late this year; getting sufficient people vaccinated will take a year too, it takes time to get enough vaccine...
Forum: Passengers & SLF (Self Loading Freight)
15th Apr 2020, 15:14
Replies: 24
Views: 4,695
Posted By MathFox

In the US airlines do fly near empty planes to...

In the US airlines do fly near empty planes to qualify for emergency subsidies, so every dollar of revenue is welcome.

In the EU near all planes are grounded (employees on emergency unemployment...
Forum: Passengers & SLF (Self Loading Freight)
3rd Mar 2020, 18:05
Replies: 33
Views: 6,257
Posted By MathFox

You want the surfaces heated till ~60⁰C for...

You want the surfaces heated till ~60⁰C for effectiveness, which requires significant amounts of heat to achieve for an average jetliner. Such temperatures increase wear on plastics, rubbers and...
Forum: Tech Log
3rd Mar 2020, 18:00
Replies: 8
Views: 2,186
Posted By MathFox

Hot air will be blown away by wind. With certain...

Hot air will be blown away by wind. With certain wind (and convection) speeds thermal convection eddies may be blown downwind, creating a series of convective "bubbles" from a single thermal source.
Forum: Rumours & News
18th Feb 2020, 18:13
Replies: 37
Views: 27,940
Posted By MathFox

"Airplanes landed without damage on a clear...

"Airplanes landed without damage on a clear runway"

The events are an indication that, despite all professionalism of ATC, the holes in the cheese at Schiphol are larger than those usually found...
Forum: Rumours & News
14th Feb 2020, 20:24
Replies: 40
Views: 24,157
Posted By MathFox

I understood it was a "control demonstrator",...

I understood it was a "control demonstrator", that means that the goal is to demonstrate that this shape of plane can be controlled in flight, can take-of and land safely and such. Wind tunnel tests...
Forum: Rumours & News
7th Feb 2020, 20:14
Replies: 33
Views: 28,467
Posted By MathFox

I do not know... But it is unlikely that these...

I do not know... But it is unlikely that these Dutch court rulings will be precedent for lawsuits elsewhere in Europe. Labour laws vary wildly between EU member states and these verdicts are soundly...
Forum: Rumours & News
7th Feb 2020, 17:44
Replies: 33
Views: 28,467
Posted By MathFox

None, as there is only two or three months to...

None, as there is only two or three months to file a wrongful dismissal lawsuit in the Netherlands.
Forum: Rumours & News
7th Feb 2020, 17:39
Replies: 22
Views: 7,576
Posted By MathFox

I predict that it will be a freighter. Cargo does...

I predict that it will be a freighter. Cargo does not complain about missing pilots. It will be small, more like the military drones, with a payload less than 100kg. Removing the cost of the pilot,...
Forum: Rumours & News
5th Feb 2020, 05:50
Replies: 152
Views: 70,666
Posted By MathFox

I would say that you were luckily not distracted...

I would say that you were luckily not distracted by ATC and landing checklists. And lucky having sufficient altitude to correct the automation induced problem.
Forum: Passengers & SLF (Self Loading Freight)
20th Jan 2020, 20:39
Replies: 17
Views: 3,129
Posted By MathFox

I guess those built-in batteries are to prevent...

I guess those built-in batteries are to prevent the bag from being gate-checked... Li batteries have to travel in the cabin!
Forum: Passengers & SLF (Self Loading Freight)
15th Jan 2020, 19:38
Replies: 4
Views: 893
Posted By MathFox

"Hydraulic problems" can be lots of different...

"Hydraulic problems" can be lots of different issues; it is the kind of wording one puts in a press release because the writer does not know any detail.

"Loss of a hydraulic system" means that the...
Forum: Passengers & SLF (Self Loading Freight)
8th Dec 2019, 16:22
Replies: 14
Views: 1,283
Posted By MathFox

These cups would be poisonous for those needing a...

These cups would be poisonous for those needing a gluten-free diet!
Forum: Passengers & SLF (Self Loading Freight)
14th Nov 2019, 17:31
Replies: 21
Views: 3,519
Posted By MathFox

Yes, there are limitations on the working hours...

Yes, there are limitations on the working hours for pilots and cabin crew. The exact regulations depend on the flag country of the airline.
A description of the EU (EASA) rules:...
Forum: Tech Log
7th Nov 2019, 16:46
Replies: 6
Views: 1,779
Posted By MathFox

Though with sufficiently complex software, one...

Though with sufficiently complex software, one will encounter bugs. I wonder how a PDF reader would act when there's insufficient memory to load (or transform) a large bitmap image. Will the entire...
Forum: Rumours & News
6th Nov 2019, 18:58
Replies: 42
Views: 35,079
Posted By MathFox

Latest report: Air Europe says an alarm for...

Latest report: Air Europe says an alarm for kidnapping was accidentally triggered. ...
Forum: Rumours & News
23rd Sep 2019, 17:43
Replies: 183
Views: 301,690
Posted By MathFox

The German operation is in a different company...

The German operation is in a different company (different legal entity), that is not yet bankrupt. They could in theory operate for years and years to come, as long as they have sufficient funds and...
Forum: Passengers & SLF (Self Loading Freight)
8th Sep 2019, 10:10
Replies: 5
Views: 1,470
Posted By MathFox

As another participant noted: the current...

As another participant noted: the current hurricanes are too far south to affect the North Atlantic crossings. But even when a hurricane was on the usual flight path, the airline would just plan a...
Forum: Tech Log
21st Aug 2019, 19:14
Replies: 3
Views: 2,396
Posted By MathFox

If you give a presentation, please please get at...

If you give a presentation, please please get at least the orders in your formulas right.

In laminar flow drag is proportional to velocity. Lift is proportional to angle (of attack) times velocity...
Forum: Passengers & SLF (Self Loading Freight)
1st Aug 2019, 15:50
Replies: 18
Views: 4,180
Posted By MathFox

Level bust, it could very well be that the route...

Level bust, it could very well be that the route LHR-ATL is extremely popular. However there is a weird phenomenon in aviation that flights with a connection are cheaper than direct flights. For...
Forum: Passengers & SLF (Self Loading Freight)
1st Aug 2019, 15:14
Replies: 18
Views: 4,180
Posted By MathFox

Prices for two people seated next to each other...

Prices for two people seated next to each other can vary by a factor 3 or more. It has to do with the pricing structure of the airline. There generally are three buckets of tickets: refundable,...
Forum: Rumours & News
24th Jul 2019, 21:09
Replies: 22
Views: 17,165
Posted By MathFox

Fully agree, it depends on the circumstances...

Fully agree, it depends on the circumstances which plan of action is appropriate. The two main alternatives are "continue to landing" or "go around." Both can be appropriate. If you're close to...
Forum: Rumours & News
27th Jun 2019, 22:56
Replies: 4,656
Views: 4,800,717
Posted By MathFox

I see the MAX as a hurried response to the Airbus...

I see the MAX as a hurried response to the Airbus Neo. Boeing skipped some sanity checks in the MAX "adaptations"; the FAA blessed the design with less oversight than appropriate.
MCAS was the...
Forum: Rumours & News
19th May 2019, 19:58
Replies: 185
Views: 163,117
Posted By MathFox

As armchair engineer I do have a question: Why...

As armchair engineer I do have a question: Why isn't there an MCAS cut-off switch that keeps the electric trim buttons operational?



I think that there is agreement that an MCAS runaway gives...
Forum: Passengers & SLF (Self Loading Freight)
19th May 2019, 10:07
Replies: 8
Views: 1,312
Posted By MathFox

It sounds like an unavailable APU (small support...

It sounds like an unavailable APU (small support engine) so that there was no pressured air to start the main engines. For such occasions airports have "starter trucks" with a compressor available to...
Forum: Rumours & News
23rd Apr 2019, 17:48
Replies: 33
Views: 28,467
Posted By MathFox

Can read Dutch (and know a bit or two about...

Can read Dutch (and know a bit or two about employment law): €3 million total in 8 wrongful termination suits is quite high for Dutch standards. Normal termination would have cost Ryanair about...
Forum: Passengers & SLF (Self Loading Freight)
5th Mar 2019, 17:45
Replies: 16
Views: 2,765
Posted By MathFox

Flew Qantas long haul (LHR-SYD) fifteen years ago...

Flew Qantas long haul (LHR-SYD) fifteen years ago and had a good experience. I'm sure things will have changed but I haven't heard that service significantly improved or decayed.
Forum: Passengers & SLF (Self Loading Freight)
12th Feb 2019, 20:31
Replies: 21
Views: 5,473
Posted By MathFox

The law in EUrope is that some conditions from...

The law in EUrope is that some conditions from the general T&C are not enforcible. A judge would certainly scratch is head why using less services than one paid for would mean that the customer would...
Forum: Passengers & SLF (Self Loading Freight)
25th Jul 2018, 19:33
Replies: 8
Views: 1,841
Posted By MathFox

I also would recommend trying to find out what...

I also would recommend trying to find out what caused the accident and which of the parties should be held responsible. Chances are that this collision would be seen as "extraordinary circumstance"...
Forum: Tech Log
25th May 2018, 17:11
Replies: 20
Views: 4,233
Posted By MathFox

I am fairly sure you are right about that. It is...

I am fairly sure you are right about that. It is not that hard to make some automation that can fly and land a plane that is in good condition in good conditions, but those systems generally drop the...
Forum: Tech Log
27th Mar 2018, 17:46
Replies: 13
Views: 4,030
Posted By MathFox

When building something for the vacuum of space,...

When building something for the vacuum of space, consider heat dissipation. There is no air to convect heat away, leaving only conduction and radiation. Components that get warm on the work bench may...
Forum: Passengers & SLF (Self Loading Freight)
17th Dec 2017, 11:25
Replies: 20
Views: 3,444
Posted By MathFox

I would take a 3 hour connection at LAX, that...

I would take a 3 hour connection at LAX, that should be enough for immigration and customs, and make sure that I have a through ticket... It would be AA or BA's responsibility to cater for you in...
Forum: Cabin Crew
29th Nov 2017, 21:21
Replies: 1
Views: 1,431
Posted By MathFox

Doing both a full time study and a full time job...

Doing both a full time study and a full time job leaves hardly any time to do something else. Consider a life of going to foreign cities and locking yourself up in your hotel room with your study...
Forum: Tech Log
29th Nov 2017, 21:05
Replies: 34
Views: 7,349
Posted By MathFox

Well, the batteries only need to supply that 90...

Well, the batteries only need to supply that 90 MW during climb (and climb power is lower than take-off power), so you can drain the batteries with 90 MW in about 10 minutes, requiring a 15.000 kwh...
Showing results 1 to 35 of 288
 
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