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Search: Posts Made By: PBL
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Forum: Rumours & News
13th Apr 2008, 18:10
Replies: 3,239
Views: 1,137,497
Posted By PBL

snowfalcon2, pertinent comments, with which...

snowfalcon2,

pertinent comments, with which I do not entirely agree, but for reasons unrelated to this thread I probably won't be contributing further.

PBL
Forum: Rumours & News
13th Apr 2008, 08:49
Replies: 3,239
Views: 1,137,497
Posted By PBL

Biz47, the difference between our views...

Biz47,

the difference between our views comes very likely because you are, obviously, amateur and I am expert in the field of embedded safety-critical digital systems.

PBL
Forum: Rumours & News
12th Apr 2008, 16:14
Replies: 3,239
Views: 1,137,497
Posted By PBL

Biz47, obviously you have no experience with...

Biz47,

obviously you have no experience with designing or building SW, let alone SW for what would be a safety-critical application. But you presume to tell a self-identified professional IT...
Forum: Rumours & News
9th Apr 2008, 19:02
Replies: 3,239
Views: 1,137,497
Posted By PBL

Biz47, let me try to summarise. Your...

Biz47,

let me try to summarise.

Your question: was the trajectory optimal?
The current answer: who knows?

The next question: who cares? Is this going to happen again?
The current answers:...
Forum: Rumours & News
8th Apr 2008, 09:01
Replies: 3,239
Views: 1,137,497
Posted By PBL

Granted. I just enjoy reading the contributions...

Granted. I just enjoy reading the contributions of people who know so much more than I do about a subject which is relevant, even though I have no idea at this point whether any of it is causal to...
Forum: Rumours & News
8th Apr 2008, 08:39
Replies: 3,239
Views: 1,137,497
Posted By PBL

I don't agree. I grant you it has been...

I don't agree. I grant you it has been repetitive, but I have read some extremely sophisticated analyses of fuel physics and chemistry which no one can reasonably regard as "nonsense". As well as...
Forum: Rumours & News
8th Apr 2008, 06:57
Replies: 3,239
Views: 1,137,497
Posted By PBL

You shouldn't be surprised. It is standard...

You shouldn't be surprised. It is standard procedure. ICAO conventions require a preliminary report within 30 days and a final report, and that is what most accident investigation agencies do, AAIB...
Forum: Rumours & News
7th Apr 2008, 10:22
Replies: 3,239
Views: 1,137,497
Posted By PBL

I am glad to see forget chip in with some...

I am glad to see forget chip in with some experience. A decade ago I was chatting about Elaine Scarry's proposal that TWA 800 might have been brought down by stray radiation from a nearby P3 with a...
Forum: Rumours & News
7th Apr 2008, 08:18
Replies: 3,239
Views: 1,137,497
Posted By PBL

Sunfish, I don't wish to question either...

Sunfish,

I don't wish to question either your contacts or your very interesting information about what is going the rounds in the insurance business. But we must distinguish between effects that...
Forum: Rumours & News
6th Apr 2008, 07:20
Replies: 3,239
Views: 1,137,497
Posted By PBL

Sunfish tells us of the latest rumors at LLoyds. ...

Sunfish tells us of the latest rumors at LLoyds.

First, a word of caution. Insurance people do not necessarily know any more than anyone else does, and they are not necessarily technically...
Forum: Rumours & News
17th Mar 2008, 21:14
Replies: 3,239
Views: 1,137,497
Posted By PBL

I would like to remind everybody that, according...

I would like to remind everybody that, according to a senior avionics manager at Honeywell in a paper published in a major conference, a certain aircraft type came within days of having its...
Forum: Rumours & News
2nd Mar 2008, 07:07
Replies: 3,239
Views: 1,137,497
Posted By PBL

Jumbo Driver, sky 9, you may find the...

Jumbo Driver, sky 9,

you may find the report on the oil-seal incident you mention in our Compendium of Computer-Related Incidents with Commercial Aircraft...
Forum: Rumours & News
28th Feb 2008, 10:20
Replies: 3,239
Views: 1,137,497
Posted By PBL

To follow up on Chris Scott's query and ionagh's...

To follow up on Chris Scott's query and ionagh's reply, here are a few links from twenty years ago to problems the US Army may have had with EMI affecting its Black Hawk helicopters (I emphasise the...
Forum: Rumours & News
28th Feb 2008, 07:21
Replies: 3,239
Views: 1,137,497
Posted By PBL

The question is not well formulated. The...

The question is not well formulated.

The transmitting power would be dependent on how far away the transmitter is (inverse-square law and all that) and whether the transmitter is broadcast or...
Forum: Rumours & News
26th Feb 2008, 20:54
Replies: 3,239
Views: 1,137,497
Posted By PBL

Yes, they knew, very well. But they didn't know...

Yes, they knew, very well. But they didn't know if would turn out to be a few years of glory (c.f., the Z80), or dominance that would last a quarter century.

PBL
Forum: Rumours & News
26th Feb 2008, 19:34
Replies: 3,239
Views: 1,137,497
Posted By PBL

Piper Driver is right that I was confusing the...

Piper Driver is right that I was confusing the 8086 with the 8088. Sorry about that. The definitive post from archae86 puts the record straight.

As for Nipper2's suggestion of "thread creep", I am...
Forum: Rumours & News
26th Feb 2008, 07:29
Replies: 3,239
Views: 1,137,497
Posted By PBL

The 8086 was a 16-bit architecture in which all...

The 8086 was a 16-bit architecture in which all processing and all data channels were 8-bit. It means you had to do everything twice: once for the lower half and once for the upper half of the 16...
Forum: Rumours & News
25th Feb 2008, 05:42
Replies: 3,239
Views: 1,137,497
Posted By PBL

overthewing asks Modern FDRs record a few...

overthewing asks


Modern FDRs record a few hundred parameters. However, as Mad (Flt) Scientist points out, the parameters *required* to be recorded are comparatively few. In other words, you need...
Forum: Rumours & News
24th Feb 2008, 06:33
Replies: 3,239
Views: 1,137,497
Posted By PBL

Chris Scott said of the two channels in the...

Chris Scott said of the two channels in the ELAC/SEC/FAC boxes:



I'm sorry, Chris, what I wrote was ambiguous.

What you say is of course correct when considering "command" and "monitor"...
Forum: Rumours & News
23rd Feb 2008, 08:13
Replies: 3,239
Views: 1,137,497
Posted By PBL

Tyropicard responds to bushfiva's query TP...

Tyropicard responds to bushfiva's query

TP says

I addressed some of Private Eye's suggestions cursorily in Post #184 (http://www.pprune.org/forums/showpost.php?p=3924378&postcount=184)
...
Forum: Rumours & News
20th Feb 2008, 07:20
Replies: 3,239
Views: 1,137,497
Posted By PBL

TwinAisle cites Private Eye's article, and says...

TwinAisle cites Private Eye's article, and says "clearly there are elements that don't add up".

There are two major points that "don't add up".

First, the article asserts that FBW systems...
Forum: Rumours & News
19th Feb 2008, 19:52
Replies: 3,239
Views: 1,137,497
Posted By PBL

I have stayed out of this so far, but this...

I have stayed out of this so far, but this supposition must be corrected.

The certification process and 3.6 million flight hours says virtually nothing about manifestation of SW faults. For an...
Showing results 1 to 22 of 22


 
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