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Search: Posts Made By: davionics
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Forum: Rumours & News
13th Mar 2019, 12:30
Replies: 5,109
Views: 13,099,446
Posted By davionics

Agree. And this is about as high profile as it...

Agree. And this is about as high profile as it gets. Witness accounts need to be impeccably interpreted. Surprised to see witness accounts publicity released so fast.
Forum: Rumours & News
13th Mar 2019, 09:01
Replies: 5,109
Views: 13,099,446
Posted By davionics

Until the investigation is complete i’m not...

Until the investigation is complete i’m not presuming MCAS was the official cause, but regardless, worth keeping in mind that well known graph (amongst engineers), the bath tub curve - that graph...
Forum: Rumours & News
13th Mar 2019, 07:40
Replies: 908
Views: 1,093,576
Posted By davionics

One can only presume the engines were engineered...

One can only presume the engines were engineered in that position due to their increased aerodynamic lift profile. An economically motivated trade-off between; (being competitive, pushing the...
Forum: The Pacific: General Aviation & Questions
30th Dec 2018, 14:38
Replies: 123
Views: 17,567
Posted By davionics

It’s going to happen, it’s only a matter of time,...

It’s going to happen, it’s only a matter of time, and also a lot of work. Weekly sat in traffic for many hours just to drive a few kilometers (like hundreds of thousands of other fellow commuters)......
Forum: Rumours & News
11th Jan 2015, 09:35
Replies: 3,923
Views: 4,440,565
Posted By davionics

Bud leon Agree totally! Especially about...

Bud leon

Agree totally! Especially about AF447 - always thought it was a strange concept in design to have no synchronous control stick feedback between pilots! Technology and flight envelope has...
Forum: Rumours & News
15th Mar 2014, 13:11
Replies: 11,831
Views: 24,188,529
Posted By davionics

Sensitive cargo? Where's the manifest?

Okay, due to the lack of a publicly released cargo manifest...

If the flight was carrying a consigned gold cargo:
50pax * (75kg + 23kg) = 4900kg
Gold is approx US$13xx/oz,
4900kg = 172842oz,...
Forum: Rumours & News
15th Mar 2014, 07:38
Replies: 11,831
Views: 24,188,529
Posted By davionics

Interpretation of the SATCOM signals is key. What...

Interpretation of the SATCOM signals is key. What radios were the signals received on, which beams, was there a pattern visible in signal strength that can be attributed to potential terrestrial...
Forum: Rumours & News
12th Mar 2014, 11:32
Replies: 11,831
Views: 24,188,529
Posted By davionics

SATCOM and Telemetry Data?

Concerning Data:

Why has nobody confirmed/announced if there were any transmissions sent via SATCOM? Seems to be the elephant in the room - the media currently appears to have an unhealthy...
Forum: Rumours & News
11th Jun 2011, 09:14
Replies: 59
Views: 47,214
Posted By davionics

You know what? If a/c had JATO rockets, and an...

You know what? If a/c had JATO rockets, and an emergency system of activation (in windshear conditions at low altitude) - slow spool ups and low altitude windshears would be less of a worry. :ok:
Forum: Tech Log
30th May 2011, 14:43
Replies: 2,070
Views: 612,932
Posted By davionics

skirtz - first post was a stellar post, I...

skirtz - first post was a stellar post, I couldn't have said it better.

It does appear to me that these pilots may've been deceived naturally believing that their flight path was not that of a...
Forum: Tech Log
28th May 2011, 13:37
Replies: 2,070
Views: 612,932
Posted By davionics

spagiola: I think that would work (in a brief...

spagiola: I think that would work (in a brief sensor fault condition), but estimated values degrade with elapsed time and environmental transcients as you say - wouldn't it just be better to be able...
Forum: Tech Log
28th May 2011, 13:13
Replies: 2,070
Views: 612,932
Posted By davionics

Zorin_75: From an engineering perspective;...

Zorin_75: From an engineering perspective; invalid (faulty) air data from non- design-redundant sensors appear to be the weakest link imho, triggering a cascade of errors thereafter.

Band-aid,...
Forum: Tech Log
28th May 2011, 12:02
Replies: 2,070
Views: 612,932
Posted By davionics

I grossly over simplified, but sometimes 'simple'...

I grossly over simplified, but sometimes 'simple' provides us the best analogy - fluid mechanics aside. As the last resort option (beyond having desirable sensor redundancy etc), GPS or INS could...
Forum: Tech Log
28th May 2011, 11:27
Replies: 2,070
Views: 612,932
Posted By davionics

peplum: The pitot-static system provides Air...

peplum: The pitot-static system provides Air Data, relative to the medium which the aircraft flies in, unlike the other sources you listed. An analogy; think of a boat on a river - if the river is...
Forum: Tech Log
26th May 2011, 12:48
Replies: 2,546
Views: 932,582
Posted By davionics

Dependability of a system is that property of a...

Dependability of a system is that property of a system which allows reliance to be justifiably placed on the service it delivers.

Models and meta-models can never account for all the situations...
Forum: Tech Log
25th May 2011, 06:07
Replies: 2,546
Views: 932,582
Posted By davionics

deSitter; Very simply, were there no accidents...

deSitter; Very simply, were there no accidents before computers were introduced into aviation?

The impeccable reliability of safety-critical computing has most likely lulled people into a false...
Forum: Tech Log
25th May 2011, 02:58
Replies: 2,546
Views: 932,582
Posted By davionics

Reliability: a measure of the success with which...

Reliability: a measure of the success with which a system conforms to some authoritative specification of its behaviour.

Safety: Freedom from those conditions that can cause death, injury,...
Forum: Passengers & SLF (Self Loading Freight)
11th May 2011, 13:47
Replies: 0
Views: 823
Posted By davionics

Another passenger tries to open door (Delta jet inbound to Boston)

Witness: Passenger ‘tugged’ at jet door mid-flight


A passenger on a Delta jet inbound to Boston Tuesday "tugged" on an emergency door he was sitting next to setting off an alarm, witnesses...
Forum: Tech Log
10th May 2011, 15:29
Replies: 13
Views: 7,802
Posted By davionics

One example that comes to mind is the Gimli...

One example that comes to mind is the Gimli Glider, crash landing of a fuel starved 767; the collapsed nose wheel helped slow it down.

Gimli Glider - Wikipedia, the free encyclopedia...
Forum: Tech Log
5th Aug 2010, 05:37
Replies: 40
Views: 13,019
Posted By davionics

Lightning

Meteorologists have a major problem. Sure they acknowledge that the Earth's atmosphere acts like a leaky, self-repairing capacitor (condenser). However, they assume that this spherical capacitor is...
Forum: Rumours & News
21st Apr 2010, 17:30
Replies: 6
Views: 7,911
Posted By davionics

Antonov aircraft crashes in Philippines

Nation & World | Antonov aircraft crashes in Philippines; 3 missing | Seattle Times Newspaper (http://seattletimes.nwsource.com/html/nationworld/2011662745_apasphilippinesplanecrash.html)
...
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