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Search: Posts Made By: PBL
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Forum: Tech Log
4th Nov 2010, 10:31
Replies: 1,524
Views: 743,078
Posted By PBL

What? This is a new one, coming out of nowhere....

What? This is a new one, coming out of nowhere. What sort of software deficiency is proposed? Where did any software fail to fulfil its requirements?

PBL
Forum: Tech Log
25th Oct 2010, 08:47
Replies: 1,524
Views: 743,078
Posted By PBL

Patterson on Auditory Warning Sounds, Phil....

Patterson on Auditory Warning Sounds, Phil. Trans. Roy. Soc B, April 1990 (http://rstb.royalsocietypublishing.org/content/327/1241/485.full.pdf+html)

PBL
Forum: Tech Log
21st Sep 2010, 19:28
Replies: 1,524
Views: 743,078
Posted By PBL

PJ2, a major issue is: looking at discrepant...

PJ2,

a major issue is: looking at discrepant readings from multiple sensors, and deciding which of them are more or less the same and which of them are more or less different.

I believe you...
Forum: Tech Log
21st Sep 2010, 11:30
Replies: 1,524
Views: 743,078
Posted By PBL

PJ2, I did? Deary me! Not any more. ...

PJ2,



I did? Deary me! Not any more.

Somehow I was thinking (3 x n) +1 = 5 when n =2. Maybe it was when I wrote it, but it's not any longer. It's 7, as Kevin said.

It makes the point...
Forum: Tech Log
20th Sep 2010, 18:54
Replies: 1,524
Views: 743,078
Posted By PBL

Whatever. I am just hoping that some other...

Whatever.

I am just hoping that some other people can see behind the repartee that there is real science here -rather a lot of it in fact- that has something to say about the issue at hand. And...
Forum: Tech Log
20th Sep 2010, 17:36
Replies: 1,524
Views: 743,078
Posted By PBL

BOAC, you just don't get it, do you? PBL

BOAC,

you just don't get it, do you?

PBL
Forum: Tech Log
20th Sep 2010, 17:21
Replies: 1,524
Views: 743,078
Posted By PBL

BOAC and NoD are now discussing exactly how it...

BOAC and NoD are now discussing exactly how it might be done reliably, that is, to detect two failed-live AoA sensors. It's indeed fun to discuss, and thinking of how to solve problems is indeed how...
Forum: Tech Log
20th Sep 2010, 11:12
Replies: 1,524
Views: 743,078
Posted By PBL

Given the number of injuries resulting from a...

Given the number of injuries resulting from a safety-critical system anomaly (a couple of broken bones and some serious bruises at Learmonth), compared with the number of fatal accidents in which...
Forum: Tech Log
20th Sep 2010, 07:55
Replies: 1,524
Views: 743,078
Posted By PBL

atakacs, No, there isn't. The general...

atakacs,



No, there isn't. The general opinion of such things is that it wouldn't do much good, and maybe quite a lot of harm.

First, think what would happen if it failed.

Then, how it...
Forum: Tech Log
19th Sep 2010, 19:54
Replies: 1,524
Views: 743,078
Posted By PBL

The AoA sensors most definitely did fail. They...

The AoA sensors most definitely did fail. They did not provide correct information about the AoA; those that froze provided incorrect information.

The usual definitions of "failure" have...
Forum: Tech Log
19th Sep 2010, 15:48
Replies: 1,524
Views: 743,078
Posted By PBL

Personally, I think I know comparatively quite a...

Personally, I think I know comparatively quite a lot about these systems. I just wish we could have a reasonable technical discussion about them, as the Concorde people seem able to discuss their...
Forum: Tech Log
19th Sep 2010, 12:13
Replies: 1,524
Views: 743,078
Posted By PBL

SPA83, I pointed out that that part of CS 25...

SPA83,

I pointed out that that part of CS 25 isn't really meant to be read in the way in which you are reading it, and gave some indications why that is.

I don't care to indulge in a " 'tis ",...
Forum: Tech Log
19th Sep 2010, 10:21
Replies: 1,524
Views: 743,078
Posted By PBL

gonebutnotforgotten, for those who read...

gonebutnotforgotten,

for those who read French, the preliminary report of the 1994 A330 Test Flight accident is at this entry in the CRICA Compendium...
Forum: Tech Log
18th Sep 2010, 18:18
Replies: 1,524
Views: 743,078
Posted By PBL

fc101, I don't agree. For example,...

fc101,



I don't agree. For example, This article by Driscoll et al. from SAFECOMP 2003 (http://www.cs.indiana.edu/classes/p545/read/Driscoll-Hall-Sivencrona-Xumsteg-03.pdf) is a much more...
Forum: Tech Log
18th Sep 2010, 18:01
Replies: 1,524
Views: 743,078
Posted By PBL

A lot of comment here about detection of...

A lot of comment here about detection of incorrect data from multiple sensors; voting algorithms and the like. This is a serious and involved technical topic involving considerable insight and...
Showing results 1 to 15 of 15


 
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