Posted on 04/06/2014 9:51:10 AM PDT by logi_cal869
A Royal navy ship has arrived in the southern Indian Ocean to verify signals Chinese officials believe could lead to missing flight MH370.
The three 'fleeting sounds' have been picked up in the multi-national search currently being conducted 1,000 miles off Australia's west coast.
At least one of those 'pings' is believed to have a similar frequency to that given off by a black box.
HMS Echo, one of Britain's most sophisticated hydrographic vessels, is racing against time to determine whether the sounds were signals from the plane's black box as the batteries powering the device are expected to run out in the next few days.
But first it will have to conduct an 'environmental search' to differentiate between the ocean's sounds and the potential finding.
Australia's HMS Ocean Shield is also in the vicinity, investigating a third sound detected nearby.
(Excerpt) Read more at dailymail.co.uk ...
Then I would say a Boeing 777 is a good disguise for a few nuke suitcases.
ROP?
There is talk about a structural failure. Composite failure?
According to Anish Patel, who heads Dukane Seacom, the pinger's manufacturer, the signal doesn't stop abruptly. Rather, it weakens gradually as the batteries die.
Yesterday, Patel said Malaysian Airlines had not sent in any pingers for battery replacement in the last several years. The MH370 pinger was due for battery replacement in 2012 and was next due in 2014. However, Patel said the airline could have had the work done by other providers.
Only GRU is authorized to investigate KGB!
Reportedly, the CVR only records the most recent two hours. That would mean, when and if it is found, it will likely have close to two hours of engine drone, followed by some minutes of relative quiet and a big splash. The "good parts" — "Allahu akbar!", [banging sound] "Open up, have you lost your mind‽" — will have been overwritten. And they'll have to rely on the FDR's data to suss out what probably happened.
I know the ELT in an inactive A/C of mine was still functional (ready to be used) five years after the required battery replacement date. Quality alkalines can have amazing lifetimes. What is the battery chemistry running these pingers?
Then why did the first ones require a B-29? Fat Man weighed 10,500 pounds.
I was just mocking them. We all know pretty much how batteries work and that the date is a “shelf life estimate”.
Posted 1st computer at 61
That would be 51....Nap time
He said “no matter how crude”.
According to the spec sheet for the DK-180 Airframe Locator Beacon, it has a lithium battery. As do four other DK models. Two of the other models have a field-replaceable battery. I don't know which of the units was installed on MH370's black boxes.
Thanks.
Except, it's not an echo. It's just an odd sound coming from somewhere on the sea floor.
If it were some sort of echo, then it would be possible for a search vessel to estimate the range to the wreck. Several such estimates from different positions would indicate the wreck's location.
Also, the battery would presumably last a lot longer if the pinger were designed not to emit sounds continually, but rather just to listen for a paging signal from a passing search vessel before expending the juice to sound off.
Further, it would be highly valuable if the return signal contained some sort of identifier, such as the airplane's serial number. Or even simply that it is a missing airframe pinger and not a whale or something. Apparently, simply beeping on 37.5khz is not good enough to say whether the current reports of detection are any good.
Actually, it is.
No.
Makes a person wonder that the jet successfully performed a water landing mostly intact and then sank in depths around 16,000 feet down.
Maybe in the nest 24 hours they may pinpoint by triangulation where its at.
Range is what 3 miles? What about when pinger is nearly three miles down, you would have to be almost directly on top of it.
And now IF its for real and the plane IS NOT in Pakistan and its down on the ocean floor then they have a chance to find out if a terrorist used a bio bomb or nerve gas.
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