Malaysian Airlines MH370 contact lost
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Unless the scale indicator on Tomnod is off, this is probably not a window section, probably something else.
A 10m section based on the 3 view plan below spans about 19 windows
in the Tomnod image, the object relative to the scale marker is approximately 10m in length and I count 4 dark spots in the row. Not enough detail to determine what it is, based on the scales I am doubtful it is a row of windows. That, and a piece of fueslage wreckage that size floating is questionable, I'd think.
A 10m section based on the 3 view plan below spans about 19 windows
in the Tomnod image, the object relative to the scale marker is approximately 10m in length and I count 4 dark spots in the row. Not enough detail to determine what it is, based on the scales I am doubtful it is a row of windows. That, and a piece of fueslage wreckage that size floating is questionable, I'd think.
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Tomnod
It's clear that the worsening of the weather has resulted in many more "hey look at this" comments related to tomnod...
From any map if you look around on other maps, for miles and miles, you can see very similar shading and white areas which can only really be the white of the crest of a wave.
From any map if you look around on other maps, for miles and miles, you can see very similar shading and white areas which can only really be the white of the crest of a wave.
I don't own this space under my name. I should have leased it while I still could
CIGA, visually that looks very likely. The question then arises is it possible.
Cockpit windows, unlike passenger windows, will be glass. The nose section contains the radar and the instrument panels.
Could that part of the nose section separate from those heavy components and remain buoyant? The nose dielectric might have integral buoyancy. Really one for Boeing.
Cockpit windows, unlike passenger windows, will be glass. The nose section contains the radar and the instrument panels.
Could that part of the nose section separate from those heavy components and remain buoyant? The nose dielectric might have integral buoyancy. Really one for Boeing.
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Are they looking for a 37 kHz radio signal or audio signal?
An oscilloscope connected to a hydrophone through an amplified bandpass filter would be able to detect and display the pings of the ULB.
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2. None. The early media reports regarding a British company having sussed out the flight's existence post-comms blackout assumed it was Rolls Royce rather than Inmarsat.
3. 00:11 GMT for a complete ground-initiated hourly handshake while at 00:19 GMT there was an unscheduled handshake (assumed to be aircraft initiated) that was incomplete. This last partial ping suggests the possibility of the Left Main AC bus having been lost and reenergized momentarily.
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Interesting Sat Orbit Analysis
This guy really seems to know what he is doing.
Some Comments on the Final Ping of MH370 by the Inmarsat-3F1 Satellite | Duncan Steel
Interesting that that GeoSync orbits can be so far off!
Some Comments on the Final Ping of MH370 by the Inmarsat-3F1 Satellite | Duncan Steel
Interesting that that GeoSync orbits can be so far off!
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Great 5 Part Series on Designing and Creation of B777
This is a great, 5 part, almost 5 hours long series on conceptualizing, designing, and building B777 by Boeing in early 90s. Interestingly, tail is made of composites so it should float.
https://www.youtube.com/watch?v=0oyWZjdXxlw
https://www.youtube.com/watch?v=0oyWZjdXxlw
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More or less what I said back on page 420.
Any "residual power" left in "the system" initiates the " failed log on" ...and the RAT is deployed (but not to power SATCOM) ?
As in an "interruption/surge" ?
As in an "interruption/surge" ?
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"comms going awol at ATC handover point is too much of a coincidence"
I think this "coincidence" is why many think whatever led to the disappearance was on purpose. Whether it was or not, it seems the cause modern airliner crashes is often a series of unfortunate coincidences. Otherwise, they'd be no crash. Mechanical, human, and/or weather, coincidences are the holes in the proverbial Swiss cheese.
I think this "coincidence" is why many think whatever led to the disappearance was on purpose. Whether it was or not, it seems the cause modern airliner crashes is often a series of unfortunate coincidences. Otherwise, they'd be no crash. Mechanical, human, and/or weather, coincidences are the holes in the proverbial Swiss cheese.
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re: Interesting Sat Orbit Analysis
Yes, there is a difference between geosynchronous and geostationary satellites. As stated, geostationary satellites are not "stationary" with respect to their designated longitude over the equator, they wander around a bit. There are defined international standards which define how far a satellite can wander - for example, this is needed so as to maintain proper separation between satellite TV services on the same frequencies. Even though satellites on the same frequency in adjacent orbital slots have orthogonal polarizations to reduce interference, a strong enough signal from a wandering satellite would cause cross-polarization interference. So, typically, a geostationary satellite is one which stays within its prescribed box. Depending upon the mission, other satellites are geosynchronous - are intentionally flown in an elliptic orbit, but cross the equator at the same longitude at the same time every day.
The people who work the orbital mechanics for these satellites are no slouches - in fact, they are some of the best mathematicians and near earth physicists I know. I have heard stories of them flying a geosynchronous satellite for years after its gas supply ran out by surfing the solar wind and taking into account the earth and moon gravitational effects. True, they didn't have to keep it in a box, but they did maintain mission. They are truly amazing people, and very dedicated. So I believe Duncan Steel can sleep soundly knowing they have taken into account all of the issues he has raised about the satellite's orbit and the earth being an oblate spheroid.
The people who work the orbital mechanics for these satellites are no slouches - in fact, they are some of the best mathematicians and near earth physicists I know. I have heard stories of them flying a geosynchronous satellite for years after its gas supply ran out by surfing the solar wind and taking into account the earth and moon gravitational effects. True, they didn't have to keep it in a box, but they did maintain mission. They are truly amazing people, and very dedicated. So I believe Duncan Steel can sleep soundly knowing they have taken into account all of the issues he has raised about the satellite's orbit and the earth being an oblate spheroid.
Last edited by RichManJoe; 27th Mar 2014 at 19:47. Reason: correcttion
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Just IMHO, but looking at both the French and Thai satellite images I lean towards them just being white horses and not debris of any sort. The images were taken around the time there was bad weather in the search area with very rough seas - in fact it was so bad the day after the Thai images were taken that all air and sea searches were allegedly called off for the day.
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RE777fly
RE
http://www.aaib.gov.uk/cms_resources...ection%201.pdf
the report also states that the event is far less likely in the air than on the ground. Sec 1.18.3
http://www.aaib.gov.uk/cms_resources...ection%201.pdf
the report also states that the event is far less likely in the air than on the ground. Sec 1.18.3
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Why arnt anyone speaking about the cabin crews? I havnt read much about them in any news website or anywhere. Does anyone have a link where we can read about the cabin crews? Who were they? We keep hearing about the pilot and co-pilot and the passengers but what about the cabin crews? 
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"Fairly sure our cutting edge of nuclear deterrent would have a pretty advanced acoustics setup on board. Whether it's useful detecting a ULB at 20,000' is another matter. "
"pretty advanced acoustics setup" is true, but sensitive to a 37.5khz ULB? No, not usually, although it might not be a bad or expensive upgrade to the world submarine fleet. I'm amazed how much people assume is or is not. The devil's in the details. Can't go assuming. Things don't just take care of themselves. Focus and follow up are two GOOD "F" words!
"pretty advanced acoustics setup" is true, but sensitive to a 37.5khz ULB? No, not usually, although it might not be a bad or expensive upgrade to the world submarine fleet. I'm amazed how much people assume is or is not. The devil's in the details. Can't go assuming. Things don't just take care of themselves. Focus and follow up are two GOOD "F" words!
Last edited by Coagie; 27th Mar 2014 at 22:56. Reason: Left out an article
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Seasat
Perhaps I should have pointed out the implications for MH370 more clearly in my previous reference to my involvement with Seasat in 1978.
If the military had that in 1978 (and it was built for civilian purposes), what satellite side scan synthetic aperture radar capability over the world's oceans must the big powers have by now?
The only possible reason I can see that military data hasn't put an end to this search long ago is that the area must be swarming with far too many equally likely targets.
Look how many the French satellite came up with through three well-space tiny holes through a cloud sheet.
If the military had that in 1978 (and it was built for civilian purposes), what satellite side scan synthetic aperture radar capability over the world's oceans must the big powers have by now?
The only possible reason I can see that military data hasn't put an end to this search long ago is that the area must be swarming with far too many equally likely targets.
Look how many the French satellite came up with through three well-space tiny holes through a cloud sheet.
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Satellite one-upmanship?
Thailand - 300 objects (2-15 metres)
Japan - 10 objects (up to 8m in size)
China - 2 objects (5 to 24 metres)
France 122 objects (1 to 23 metres)
The only 'real' evidence we may have is naked eye SAR by the Australians who sighted two elusive objects.
Thailand - 300 objects (2-15 metres)
Japan - 10 objects (up to 8m in size)
China - 2 objects (5 to 24 metres)
France 122 objects (1 to 23 metres)
The only 'real' evidence we may have is naked eye SAR by the Australians who sighted two elusive objects.
End of comment on that. 2. BEA report on AF 447 made specific mention of how a submarine searching for underwater beacon and wreckage in deep water was hampered by some technological factors.
For example, Malaysia itself has 2 French built submarines, the Australians have 6 Collins Class subs based in Western Australia, Japan has 16 and heaven knows how many the Chinese have.
Taking the 6 Australian ones as an example, it does not seem to make sense that the positions of all have to remain secret as presumably some have to come back to base for resupply and then they would be visible by satellite.
If I were running this SAR Op, I'd not be asking for submarines in that particular area, for some of the reasons stated above. There are better assets available.
Sea State.
Sea State Definition Table
https://www.ec.gc.ca/meteo-weather/d...n&n=80C039A3-1
Someone a couple of hundred posts back was asking about Sea States re SAR
Perhaps these will help to visualize conditions in the search area.
https://www.ec.gc.ca/meteo-weather/d...n&n=80C039A3-1
Someone a couple of hundred posts back was asking about Sea States re SAR
Perhaps these will help to visualize conditions in the search area.