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Search: Posts Made By: GarageYears
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Forum: Tech Log
26th May 2011, 13:33
Replies: 2,546
Views: 932,835
Posted By GarageYears

Block pitots - back to basics

Thinking out loud....

Ok, so a pitot in it's simplest form is a tube facing into the 'liquid' flow, such that the resulting pressure can be measured with a transducer (diaphragm). At a constant...
Forum: Tech Log
25th May 2011, 15:11
Replies: 2,546
Views: 932,835
Posted By GarageYears

Presumably there are a fair share of "dolts" in...

Presumably there are a fair share of "dolts" in the physics world... however it's rather ironic isn't it? We're sitting here communicating over a massively connected, highly reliable IT network...
Forum: Tech Log
23rd May 2011, 13:48
Replies: 2,546
Views: 932,835
Posted By GarageYears

amos2: Presumably you will deign...

amos2:





Presumably you will deign to climb off your (almost insurmountably) high horse and put us, the BEA and Airbus out of our misery? Not only will that save additional "100's of pages"...
Forum: Tech Log
20th May 2011, 18:14
Replies: 2,546
Views: 932,835
Posted By GarageYears

This aspect of the "conversation" has had me...

This aspect of the "conversation" has had me thinking also... since, in everything except Mechanical Backup (a realm of last resort if there ever was one), the fact of the matter remains that some...
Forum: Tech Log
19th May 2011, 18:50
Replies: 2,546
Views: 932,835
Posted By GarageYears

There are two entirely different animals at play...

There are two entirely different animals at play in commercial aviation boomsets and we need to careful that the features are not mixed up...

Active Noise Reducing (ANR) headsets (i..e. Bose...
Forum: Tech Log
19th May 2011, 13:59
Replies: 2,546
Views: 932,835
Posted By GarageYears

To return to an earlier point - the training...

To return to an earlier point - the training capability of current simulators "beyond the normal flight envelope".

This is an area of current review within the flight simulation and training...
Forum: Tech Log
19th May 2011, 13:25
Replies: 2,546
Views: 932,835
Posted By GarageYears

Chris: The microphones on all headsets in...

Chris:

The microphones on all headsets in use on commercial aircraft these days are of a type known as "noise cancelling" - this is not some electronic magic, the mic transducer is open at the...
Forum: Tech Log
18th May 2011, 13:26
Replies: 2,546
Views: 932,835
Posted By GarageYears

Chris: Not according to the Airbus SDN...

Chris:



Not according to the Airbus SDN document I have in front of me.

The crew channels that are recorded are effectively the headset signals, hence only include 'PTT'd' signals, not the...
Forum: Tech Log
18th May 2011, 12:39
Replies: 2,546
Views: 932,835
Posted By GarageYears

More info in the SSCVR

Something not identified in the previously posted info relating to the CVR:


This is written rather poorly, what is meant is that the most recent 30 minutes is individually stored, while data...
Forum: Tech Log
17th May 2011, 18:04
Replies: 2,546
Views: 932,835
Posted By GarageYears

Hahahaha... well done. :D Firstly, please...

Hahahaha... well done. :D

Firstly, please don't tell Microsoft... really no Powerpoint?

Ok, so now the comedy is finished... right? :rolleyes:

It DOES NOT take weeks - I routinely handle...
Forum: Tech Log
17th May 2011, 17:04
Replies: 2,546
Views: 932,835
Posted By GarageYears

Why so long to synchronize?

I don't understand this?

From the CVR System Description Note:

Therefore the necessary time encoding information is embedded with the audio data. Having worked with several different synch...
Forum: Tech Log
13th May 2011, 15:13
Replies: 2,546
Views: 932,835
Posted By GarageYears

Presumably the injuries to the unfortunate...

Presumably the injuries to the unfortunate victims would be rather obviously different if that were so.... and to date I have seen nothing that suggests an inverted impact at least initially - though...
Forum: Tech Log
12th May 2011, 12:37
Replies: 2,546
Views: 932,835
Posted By GarageYears

Grity: What you need to know is at...

Grity:



What you need to know is at least one significant data point (be it altitude OR speed) and have a set of profiles over a reasonable range (something like 20kt speed increments, or...
Forum: Tech Log
11th May 2011, 15:53
Replies: 2,546
Views: 932,835
Posted By GarageYears

Confused?

I have been trying to follow the discussion on filters and what not, w.r.t. to detection of the pingers, but believe the techniques being discussed are way off what you would do to pull such a signal...
Forum: Tech Log
11th May 2011, 15:18
Replies: 2,546
Views: 932,835
Posted By GarageYears

Pinger spec: There is no defined detection...

Pinger spec:

There is no defined detection range... but I found this:

Deep-water Black Box Retrieval - November 2009, Volume 13, Number 09 - Archive - Hydro International...
Forum: Tech Log
10th May 2011, 17:53
Replies: 2,546
Views: 932,835
Posted By GarageYears

:sad: So the implication of this is that the...

:sad:

So the implication of this is that the French Navy are idiots then? Otherwise they were just tooling around the ocean for a bit of fun, since they obviously have a better idea of whether or...
Forum: Tech Log
5th May 2011, 17:21
Replies: 2,546
Views: 932,835
Posted By GarageYears

CVR at least powered whether engines or not

The Airbus SD documentation states:



I don't have time to dig through the full electrical schematics, but power is certainly more or less directly derived from the battery via an inverter.
...
Forum: Tech Log
4th May 2011, 17:28
Replies: 2,546
Views: 932,835
Posted By GarageYears

Which I do... 18V DC is derived for the CVR...

Which I do...

18V DC is derived for the CVR area mic preamp, from the 115V AC supply delivered to the CVR.
Forum: Tech Log
4th May 2011, 16:54
Replies: 2,546
Views: 932,835
Posted By GarageYears

Airbus CVR designs currently record 4-channels -...

Airbus CVR designs currently record 4-channels - the Capt, F/O and 3rd occupant crew mic signals, and the CVR area mic. Since the crew microphones within modern aircraft are all 'powered' (electret),...
Forum: Tech Log
29th Apr 2011, 13:43
Replies: 2,546
Views: 932,835
Posted By GarageYears

Ok, so are we all done with the distraction...

Ok, so are we all done with the distraction related to the picture of the SSFDR? I think a number of folks have posted plausible explanations, assuming there is something to be explained, but to be...
Showing results 1 to 20 of 20


 
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