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originally posted by: earthling42
Either they have more information which has not been released, and which has helped them to calculate the speed after the aircraft turned towards the south, or the current search area is simply not where it has crashed.
It doesn't pinpoint the aircraft, you've misunderstood something. The defense industry does use Doppler radar and this explains what it does and this is all Inmarsat claimed the Doppler effect does:
originally posted by: Psynic
If doppler effect had any factual basis for pinpointing aircraft the technique would be fully developed by the defence industry long ago.
So if you understand what that's saying, it doesn't pinpoint the aircraft and there are multiple possible paths into the southern Indian ocean due to uncertainty about the aircraft speed. Here's an old image I saved showing 2 paths, though there could be more possible paths than the two shown, and there is probably a more recent map but it won't change the concept, even if it shows different search areas.
the Doppler effect. Most modern radar systems use this principle into Doppler radar and pulse-Doppler radar systems (weather radar, military radar, etc...). The Doppler effect is only able to determine the relative speed of the target along the line of sight from the radar to the target. Any component of target velocity perpendicular to the line of sight cannot be determined by using the Doppler effect alone, but it can be determined by tracking the target's azimuth over time.
The theory goes back to at least the 1940s and probably earlier, but of course it couldn't be done with satellites until satellites with this data were available eliminating most of the time since then. So I'm guessing this is probably the first time they both had the needed satellite data available, and needed this analysis, though if there are other reasons for not doing it earlier I'm not sure what they were.
I consider it ludicrous to suggest a whole new form of pinpointing a target was developed just to find MH370, especially at such a propitious time.
originally posted by: earthling42
a reply to: Psynic
Current search area, because they abandoned the first location where they thought it crashed
originally posted by: Arbitrageur
It doesn't pinpoint the aircraft, you've misunderstood something. The defense industry does use Doppler radar and this explains what it does and this is all Inmarsat claimed the Doppler effect does:
originally posted by: Psynic
If doppler effect had any factual basis for pinpointing aircraft the technique would be fully developed by the defence industry long ago.
Doppler Radar
So if you understand what that's saying, it doesn't pinpoint the aircraft and there are multiple possible paths into the southern Indian ocean due to uncertainty about the aircraft speed. Here's an old image I saved showing 2 paths, though there could be more possible paths than the two shown, and there is probably a more recent map but it won't change the concept, even if it shows different search areas.
the Doppler effect. Most modern radar systems use this principle into Doppler radar and pulse-Doppler radar systems (weather radar, military radar, etc...). The Doppler effect is only able to determine the relative speed of the target along the line of sight from the radar to the target. Any component of target velocity perpendicular to the line of sight cannot be determined by using the Doppler effect alone, but it can be determined by tracking the target's azimuth over time.
The theory goes back to at least the 1940s and probably earlier, but of course it couldn't be done with satellites until satellites with this data were available eliminating most of the time since then. So I'm guessing this is probably the first time they both had the needed satellite data available, and needed this analysis, though if there are other reasons for not doing it earlier I'm not sure what they were.
I consider it ludicrous to suggest a whole new form of pinpointing a target was developed just to find MH370, especially at such a propitious time.
There's absolutely nothing new or revolutionary about the concept. When they released the raw data, Inmarsat explained a number of possible sources of error, but they don't explain how they dealt with those.
Perhaps the most unsettling information in regards to the missing Boeing 777 comes from retired 35 year Delta pilot, Field McConnell, who states that since 1995, Boeing Uninterruptible Auto Pilots have been equipped in Boeing planes. This information was apparently not released until March of 2007, following a subsequent lawsuit by McConnell. The modification was reported to the FAA, NTSB and ALPA ( airline pilots association). According to McConnell’s documents, Boeing is said to have stated that by end of 2009 all Boeing planes would be fitted with the BUAP - making them impossible to manually hijack within the plane but susceptible to remote control by the military, according the flight veteran.
originally posted by: RP2SticksOfDynamite
No BB will be recovered or even if there is one its probably fake or what is reported is not whats on it!
No plane, no debris, no floating anything which is F in impossible = Hoodwinkers!!
Said this 350 pages ago!!
originally posted by: Mikeultra
a reply to: Zaphod58
Maybe BUAP is classified, and is installed in a way that aircraft mechanics are not privy too. Sort of like the HAL9000 computer form 2001 A Space Odyssey. It doesn't need to be touched by mechanics once it's installed at the Boeing assembly plant. Therefore you don't need to know about it!
originally posted by: research100
a reply to: Psynic
new article...looks like they are blaming the pilot again www.nydailynews.com...
quote...the pilot of the missing Malaysia Airlines Flight MH370 airliner has been identified as the "chief suspect" in the plane’s disappearance by Malaysian police after they found flight simulator evidence at his home.
Investigators discovered that Capt. Zaharie Ahmad Shah had programmed a flight simulator at home to practice a flight far out at sea in the Indian Ocean and landing on an island with a short runway.
These were deleted but recovered by investigators. They also found that the captain, an outgoing individual, had made no social or work commitments for the future.
Read more: www.nydailynews.com...
originally posted by: Zaphod58
a reply to: Psynic
The 777 and all Boeing aircraft prior to the 787 IIRC use hydromechanical controls, not fly by wire, so yes they would require some modification.
This system also supposedly has a separate computer and power supply, separate from the aircraft.