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21st Jul 2020, 10:43
Replies: 848
Views: 683,383
Posted By SteinarN

According to Leeham News and Analysis...

According to Leeham News and Analysis (https://leehamnews.com/2020/07/21/hotr-norwegian-claims-1bn-in-damages-from-boeing/), Norwegian have filed a claim against Boeing for more than US$1B.
The...
27th Feb 2020, 08:38
Replies: 18
Views: 7,589
Posted By SteinarN

The number of accidents will go up by 1 as you...

The number of accidents will go up by 1 as you say. But the number of flights will not increase that much as the Max was flying for only eleven weeks in 2019.

But you are right, the accident rate...
27th Feb 2020, 05:53
Replies: 18
Views: 7,589
Posted By SteinarN

And next year that graph will go off the scale at...

And next year that graph will go off the scale at a value of around 13...
28th Jan 2020, 17:19
Replies: 156
Views: 55,266
Posted By SteinarN

And one other point; had the pilots done...

And one other point;
had the pilots done absolutely nothing then the plane would have continued flying level and straight. It was the action from the pilots that actually brought it down. And even...
27th Jan 2020, 20:29
Replies: 81
Views: 94,218
Posted By SteinarN

Exactly my thought too. There is a lot of black...

Exactly my thought too.
There is a lot of black soot on the upper left side of the vertical stabilizer. But there is no sign on the ground of any fire in that area.
9th Jan 2020, 14:47
Replies: 637
Views: 1,575,040
Posted By SteinarN

Yes. And the mics would pick up sounds from...

Yes. And the mics would pick up sounds from explosions too, be it engine explosions or other external explosions.
22nd Dec 2019, 18:46
Replies: 288
Views: 323,640
Posted By SteinarN

Some more, actually the complete nytimes piece,...

Some more, actually the complete nytimes piece, sorry for the formatting;

"The global grounding of the 737 Max...
30th Oct 2019, 17:46
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

Damn, Mr Cohen REALLY gave it to Muilenburg :E

Damn, Mr Cohen REALLY gave it to Muilenburg :E
30th Oct 2019, 15:58
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

Is there a link to todays hearing?

Is there a link to todays hearing?
23rd Oct 2019, 12:51
Replies: 20
Views: 10,541
Posted By SteinarN

Boeing to cut 787 output from 14 to 12 monthly from late 2020

According to Leeham, Boeing is going to cut 787 production for two years citing global trade environment (read: Trump)

Boeing then seems to plan to increase production again from late 2022. But to...
21st Oct 2019, 10:59
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

Wasn't the need to extend MCAS to the low speed...

Wasn't the need to extend MCAS to the low speed 1G region only discovered fairly late in the flight test campaign? I am sure I've read that from a reliable(?) source, could be Leeham or SatcomGuru....
7th Sep 2019, 19:53
Replies: 170
Views: 202,602
Posted By SteinarN

I would say redesigning the fuselage frames...

I would say redesigning the fuselage frames making the frame height lower but probably increase the thickness of the material in the frame in order the make the cabin wider is a significant...
5th Sep 2019, 10:09
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

As i said, I had to make several assumptions, the...

As i said, I had to make several assumptions, the most major assumption was at what AOA the MCAS starts, and at what AOA MCAS reaches its full travel. If MCAS starts putting in AND at 10 degrees AOA...
5th Sep 2019, 09:37
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

A couple months ago I tried to make a...

A couple months ago I tried to make a back-of-the-envelope calculation on what the elevator forces/positions would be in the 10-14 AOA region. Ofc I had to make several assumptions, like that the...
4th Sep 2019, 13:03
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

And at the same time Boeing obviously did NOT...

And at the same time Boeing obviously did NOT expect the pilots do diagnose a correct MCAS activation in a real high AOA event as trim runaway. How did Boeing figure this out, that the pilots would...
22nd Jul 2019, 17:22
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

The first Ariane 5 launch failure in the 90's...

The first Ariane 5 launch failure in the 90's would be a prime example for just such a software error.
10th Jul 2019, 11:40
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

That is correct. There is several...

That is correct.

There is several similarities between those two professions.

The control software of complicated refrigeration plants occasionally contains one or more serious flaws.
The...
9th Jul 2019, 21:41
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

737 driver to name one was very assertive about...

737 driver to name one was very assertive about just that. He made it sound so easy, too easy in my view.
8th Jul 2019, 14:23
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

Very interesting. So, lets say the pilots...

Very interesting.

So, lets say the pilots mismanages the speed, for example autothrottle disconnected without pilots noticing. Speed decayes, AOA increases, passes MCAS treshold, MCAS start to put...
8th Jul 2019, 07:11
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

MCAS is a lot faster, actually 50 percent faster....

MCAS is a lot faster, actually 50 percent faster. It trims at 0.27 units/second versus main electric trim at 0.18 units/second with flaps up.

So, 9.2 seconds MCAS needs a whopping 13.8 seconds of...
5th Jul 2019, 04:42
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

I saw your post before it got deleted. Try to...

I saw your post before it got deleted. Try to post it again. It was a factual mathematical chart, should be no reason whatsoever to delete it.
2nd Jul 2019, 10:32
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

I didnt say anything about thermal protection of...

I didnt say anything about thermal protection of the IGBT, I was only adding that there could well be that there was thermal sensing of the windings in the motor. But ofc, that is pure specualtion...
2nd Jul 2019, 09:42
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

A brushless three phase motor could be a "normal"...

A brushless three phase motor could be a "normal" induction motor. Or it could be a permanent magnet motor. And it can have some position feedback added to it. And even though it's not specifically...
30th Jun 2019, 16:39
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

This is something I too am VERY curious about. ...

This is something I too am VERY curious about.

I have tried to make some thought experiments.
We know MCAS at low speed was supposed to administer up to 2.5 units AND trim.
We dont know from...
30th Jun 2019, 09:16
Replies: 4,656
Views: 4,277,197
Posted By SteinarN

Well, there is a large number, certainly in...

Well, there is a large number, certainly in excess 100, of true/false datapoints recorded by the FDR, the manual trim up/trim down to be one of them where each (trim up, trim down) have its own...
Showing results 1 to 25 of 127
 


 
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