But in this picture there are at least two light sources, one on each side of the lens. The image we are looking at is a screen shot of another screen. There are lighting sources external to the monitor, and I suspect that the loss of contrast in the area above the SSFDR chassis is an artifact caused by numerous things, including color temperature, reflection, and external camera automatic focus and aperture issues. Nothing more. |
snowfalcon2,
"In the middle of the picture both lamps have equal brightness and so each lamp cancels out the shadow cast by the second lamp (unless the feature is big enough so that the lamps create two overlapping shadows). The result is a low contrast area." Clever explanation, but...why this would only happen at the central region of the image and not along the vertical axis of the photo? |
mm43,
Lurking at this forum for months, I developed some respect for your opinions, but I have to disagree now. It seems too ad hoc. Alas, you can see a reflexion at the left superior border of the monitor. I think we could rule out the interference of some other light source in the picture. Iīm sure that in being so assertive some people here will begin to suspect that I have some hidden agenda, but I assure you that I have not an axe to grind. It only happens that Iīm a guy that likes advocating for the Devil!:) I have no reason to believe that someone would tinker with the image, but still I canīt make myself to believe this image is normal. Personally, I tend to agree with the guy that raised the possibility of "censorship" in the best interest of the families of the dead. |
A pure SLF
http://i25.servimg.com/u/f25/11/75/17/84/chassi11.jpg
http://i25.servimg.com/u/f25/11/75/17/84/chassi10.jpg The left hand bottom corner is into the silt a little. Could not the memory module still be there and buried?? |
How quickly this thread wanders off. And when it does then all sorts of inane comments are posted. MM43 has the most likely reason as to the differences in the picture. Cameras only record according to their settings. No cover up imo or anything sinister. Unless someone comes up with the suggestion that the media is down there trawling through the debris and has taken the module. OMG.
Maybe someone should go back to lurking..... |
Promani,
I really donīt see any reason for your agressive comment. I argue in good faith and respect the other commenters here. More important, I have made clear that I donīt give credit to any conspiratory theory, or doubt that the people in charge of the investigation are doing their best. If you are more interested in other aspects of this issue, thatīs fine to me, but please note that this forum has plenty of space for that, with no need of being rude to other people. Unless, of course, you are a troll or worse. Please recant or Iīll be forced to denounce your bullying behaviour to the moderators. |
CSMU
Could not the memory module still be there and buried? I had the same feeling at the first time i did see the picture; Would be fantastic. But BEA said NO: Information, 27 April 2011 |
@ Machinbird (post #258)
Indeed I haven't seen the "wreckage distribution and how it had been influenced by a slow moving current from E to W" theories as a fact. I was under the impression those they looked a little too much like a "guesswork", based on a single sonar picture without proved link between significant parts and the said sonar image, to pay attention to them. I'm afraid I therefore have no different theory of wreckage distribution to offer... |
Rocket shaped tube?
Any thoughts on what the white rocket shaped tube is on the right hand side of the monitor picture is?
Flare perhaps? All opinions / inklings are more than welcome. |
CSMU likely detached from Rack at sea surface crash
No way can the FDR have separated on impact with the seabed Water surface for an stalled a/c at high sink rate is hard like soil. And this crash into water destroyed the a/c. As all of us can see the assembly of CSMU to the rack is not strong enough. |
On texture and pixels:
I think the culprit of the 35+ posts is the suggestive ellipse drawn by Centrosphere in his post #246. Without that, the smooth area is about as wide as the DFDR 'box' but deeper than the ellipse suggests. In the nearly two years that this piece has been lying there, there must have been episodes of significant water currents across the 'abyssal plain'. The area we're looking at could well be the 'wind shadow' of the chassis, covered with finer material than the more exposed area's around it. On impact forces: What puzzles me is that the mounting platform of the CSMU is bent upwards, i.e. opposite to the inertia forces one would expect. That could be explained by the hydrodynamic forces acting either on the fuselage skin or directly on the DFDR mounting. But how was the CSMU then torn off its mountings? |
FDR CVR
@crippen
Could not the memory module still be there and buried?? For the elliptical cylinder example; the major axis (a), minor axis (b), and length (c) of the enclosure, must conform to the relationship: a, b, c >= 2.0 inches a + b + c >= 9.0 inches The same applies for a rectangular shape, while for spherical shaped enclosures, the average radius must be => 3inches. Given that the memory unit and the chassis have different shape form factors, I would be surprised if they arrived at the same location after a 4Km descent. Dependent on the CG & mass to vol, the cylinder/sphere is less likely to plane than the chassis (tumble maybe) and so will probably be found near heavy items from the empennage. |
Small craters on the seabed are not likely to last long. However, one things underwater archaeologists have encountered is that submerged objects will often have areas around them dug out by the current. Basically, what happens is as the current encounters the object and is forced to go up over it, that causes the water right next to the object to become turbulent, which can push sediment away from the object. In archaeological terms, that allows later material to be deposited, which is why stratigraphy is of little use in underwater archaeology, even though it is of critical importance by land.
In terms of this situation, if there is a depression next to the recorder casing, it could indicate the direction in which the local currents tend to flow, and the depression was excavated by turbulent water from the current being forced over the recorder casing. |
ushumgal;
In terms of this situation, if there is a depression next to the recorder casing, it could indicate the direction in which the local currents tend to flow, and the depression was excavated by turbulent water from the current being forced over the recorder casing. However, in terms of the various photographs we have seen taken on the bottom, I would venture to say that current movement on the bottom is virtually nonexistent. Go back to the original photos and examine the left-hand MLG. You will note that the rear wheels touched down first and turned about 90 degrees, picking up some sediment from the bottom. The front wheels dug in, and there has been no sign of scouring in nearly two years. |
BJ-Eng, thanks for your explanation on the design considerations.
I'm willing to wager however, that if the ultimate result of this search is two chassis units recovered, and nil memory modules, that design philosophy will be revisited, and likely revised. |
Hi,
About the CSMU: do anybody knows the respective weights of the two parts? About the "abnormal" spot on THE picture: could it be the result of Remora robot vertical thrusters: perhaps the robot "look at" the FDR from the other side before to take this picture and has disturbed the soil there? |
I'm sure glad they didn't find the memory module first. I'd have lost out on a lot of entertainment.
|
Originally posted by HazelNuts39 ... What puzzles me is that the mounting platform of the CSMU is bent upwards, i.e. opposite to the inertia forces one would expect.
|
Dependent on the CG & mass to vol, the cylinder/sphere is less likely to plane than the chassis (tumble maybe) and so will probably be found near heavy items from the empennage. So to me from a shape factor, it looks like a minature engine. At any rate it's more likely to be closer to the engines than anything else. But since I'm not the guy looking for it, my opinon has little value :) I once bought a 5 lb magnet for the sole purpose of recovering objects like this from the mud (I used to have it snapped to the underside of my "steel-case" desk and most couldn't even pull it loose. |
Just to put this to bed, here is what happens when you get moon dust on a lens at f/16.
http://www.hq.nasa.gov/alsj/a12/AS12-46-6818HR.jpg http://www.hq.nasa.gov/alsj/a12/AS12-46-6826HR.jpg http://www.hq.nasa.gov/alsj/a12/AS12-46-6813HR.jpg The camera is behind an optical window that can withstand immense pressure, meaning it is probably spherical. Since this protrudes from the underside of the ship, it's very possible that it can become smudged with whatever detritus it is maneuvering around in. Really, has conspiracism just become a given fact of modern life? Sometimes a cigar is just a cigar. |
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