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Search: Posts Made By: etudiant
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Forum: Rumours & News
11th Oct 2014, 17:55
Replies: 11,831
Views: 24,295,835
Posted By etudiant

That is the type of basic question that needs to...

That is the type of basic question that needs to be addressed, whether any combination of systems management would allow the aircraft as configured to fly the route that is projected.
Jonfra makes a...
Forum: Rumours & News
11th Oct 2014, 02:45
Replies: 11,831
Views: 24,295,835
Posted By etudiant

The flight duration is known, the last ACARS...

The flight duration is known, the last ACARS message gives the fuel available then and the arc calculations give an indication of where the plane wound up.
The various climbs, doglegs and descents...
Forum: Rumours & News
5th Apr 2014, 18:22
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Deep ocean water is uniformly somewhat below 4 C,...

Deep ocean water is uniformly somewhat below 4 C, usually 1-3 C.
So the battery life expectancy was set to reflect expected conditions.
Afaik, lithium batteries drop their power pretty steeply once...
Forum: Rumours & News
5th Apr 2014, 00:08
Replies: 11,831
Views: 24,295,835
Posted By etudiant

JoeBloggs2...

JoeBloggs2 (http://www.pprune.org/members/363403-joebloggs2) Technology has moved on a little bit in the last 20+ years... :cool:


True for signal processing and batteries, but AUVs that can...
Forum: Rumours & News
4th Apr 2014, 17:27
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Low Fliers excellent post deserves extending to...

Low Fliers excellent post deserves extending to make it explicit.
We need to sonar side-scan(SSS) an area of about one million square km to be reasonably confident of finding the remains of MH370....
Forum: Rumours & News
30th Mar 2014, 23:02
Replies: 11,831
Views: 24,295,835
Posted By etudiant

It seems increasingly unlikely that any trace of...

It seems increasingly unlikely that any trace of this aircraft will ever be found.


In US terms, the current guidance is roughly this:
We think an aircraft has crashed about 1100 miles off the...
Forum: Rumours & News
30th Mar 2014, 21:24
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Many have commented that the MH370 thread is...

Many have commented that the MH370 thread is becoming unwieldy, despite the heroic efforts of the moderators.
Perhaps the moderators could ease the crush by setting up the first 10-30 or so comments...
Forum: Rumours & News
29th Mar 2014, 23:45
Replies: 11,831
Views: 24,295,835
Posted By etudiant

"Commodore Peter Leavy, the overall military...

"Commodore Peter Leavy, the overall military commander of the search effort, said: ''This is a very, very big operation … Normally a military exercise involving different nations is the result of a...
Forum: Rumours & News
29th Mar 2014, 13:49
Replies: 11,831
Views: 24,295,835
Posted By etudiant

There is a misplaced belief in the pervasiveness...

There is a misplaced belief in the pervasiveness and effectiveness of nameless national surveillance bodies.
The fact is surveillance costs big money, a few billion apiece for each of the large NRO...
Forum: Rumours & News
29th Mar 2014, 01:30
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Low frequency sound requires a larger and more...

Low frequency sound requires a larger and more powerful source, plus it is more difficult to localize. ELTs have severe size and power limits, so a high frequency noise to pinpoint the source makes...
Forum: Rumours & News
28th Mar 2014, 03:07
Replies: 11,831
Views: 24,295,835
Posted By etudiant

1100 km is an hours flying time or more

We have a reasonable indication when the plane ran out of fuel from the satellite pings. Now the belief is that the plane had less endurance than initially expected because its early diversions...
Forum: Rumours & News
28th Mar 2014, 02:33
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Satellites are poor search tools

Satellites are just as bound by optics constraints as earthbound photographers, so the resolution of an image 20+ miles square is not at the centimeter level. High resolution zooms can be had, but...
Forum: Rumours & News
14th Mar 2014, 16:47
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Jet fuel is a very different cut from ship diesel...

Jet fuel is a very different cut from ship diesel fuel.
Ship diesel is a much lower volatile fraction, needing preheaters etc to burn in enormous 2 stroke diesels the size of a house. At jet...
Forum: Rumours & News
13th Mar 2014, 14:00
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Re the fuel load, it was stated very early in...

Re the fuel load, it was stated very early in this event that the aircraft had 7 and a half hours of fuel loaded. So there was plenty of gas to go even further than the 4 hours post loss of contact.
Forum: Rumours & News
13th Mar 2014, 01:05
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Not sure the satellite image site is within the...

Not sure the satellite image site is within the Chinese claimed part of the South China Sea, but it is mighty close. Would be unsurprising if China uses this incident to buttress their claimed...
Forum: Rumours & News
11th Mar 2014, 00:34
Replies: 11,831
Views: 24,295,835
Posted By etudiant

The two individuals with stolen passports bought...

The two individuals with stolen passports bought the cheapest flight available for their routes, so they flew economy.
Sitting in the back of the airplane, they would draw attention just by coming...
Forum: Rumours & News
10th Mar 2014, 01:20
Replies: 11,831
Views: 24,295,835
Posted By etudiant

An environment filled with active fishing boats...

An environment filled with active fishing boats in relatively shallow (<100m)
water sounds to me like a nightmare environment for any type of sound detection.
Just because the noise clutter from...
Forum: Rumours & News
9th Mar 2014, 14:13
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Has it become the norm for military and civilian...

Has it become the norm for military and civilian radars to capture and store the data at high resolution for playback?
Unless it is, it would be asking for a lot to have a military radar operator...
Forum: Rumours & News
9th Mar 2014, 01:39
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Does not the absence of debris pretty much...

Does not the absence of debris pretty much eliminate the various in flight breakup options?
No in flight breakup and no Acars suggests purposeful action rather than accident.
Forum: Rumours & News
8th Mar 2014, 23:30
Replies: 11,831
Views: 24,295,835
Posted By etudiant

I think Al Jazeera was referencing this...

I think Al Jazeera was referencing this Vietnamese story:
Vietnam Navy says Malaysia Airlines plane crashes off Tho Chu Island | Tu?i Tr? news...
Forum: Rumours & News
8th Mar 2014, 22:11
Replies: 11,831
Views: 24,295,835
Posted By etudiant

Basic question. Do jetliners communicate much...

Basic question.
Do jetliners communicate much with each other during long flights or is the protocol to remain silent unless reporting unusual conditions?
It seems that MH370 had plenty of company...
Showing results 1 to 21 of 21


 
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