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Tag: <span>Inmarsat</span>

Aviation Industry: Time for a Black Box Upgrade

Woodland Hills, CA — (ReleaseWire) — 07/07/2016 –No one is saying that aircraft tracking doesn’t need an overhaul. It does. Examination of plane crash events demands it.

Aviation experts have been asking for pinger battery improvements since a month after the crash of Air France 447 on 1 June 2009, when the pinger battery ran down in July. Air France 447 was not recovered from the ocean floor until May 2011, nearly two years after it was lost. Debris from the accident was recovered in the interim, but if the pinger had been louder, or the battery designed to last longer, then there’s a good chance that the plane would have been discovered sooner. One of the outcomes of this terrible event was a determination to design a pinger system with longer lasting batteries. EASA amended requirements for flight recorders and underwater locating devices in its 2013-26 amendment(RMT.0400 & RMT.0401 (OPS.090(A) & OPS.090(B)) — 20.12.2013) but implementing these requirements takes a prohibitively long time.

Aviation experts have been asking for better tracking technology since Malaysia Airlines Flight 370 disappeared on 8 March 2014 while flying from Kuala Lumpur International Airport, Malaysia, to Beijing Capital International Airport in China. Because this plane departed from its planned route, finding where it came down has been a unique challenge. Inmarsat’s satellite communications network concluded that the flight continued until at least 08:19 and flew south into the southern Indian Ocean. Triangulation of Inmarsat’s satellite communications has been the only credible source searchers depend on to develop the search area.

Aviation experts have been suggesting the blackbox be water-activated (or have water-activated duplicates) with flotation of some kind so the blackbox can be found faster. More recently, aviation experts have wondered about EgyptAir Flight 804 which crashed into the Mediterranean Sea on 19 May 2016. It was known fairly precisely where it came down, and yet salvage and rescue units were unable to be on the scene in time to help any survivors—if survivors there had been. We will never know because no one was there. And while tracking the location of the blackbox fell within the thirty day battery limit, if the technology had more power, it could have been located sooner. Finding the wreckage sooner means less money spent on the search, and a shorter time for the families agonizing over their losses.

So here is what is new: Inmarsat provides SwiftBroadband service for plane’s inflight Wi-Fi on many aircraft. Immarsat is developing a streaming system described as a “blackbox in the cloud.” This streaming system they are working on will allow crucial data to be streamed off a plane on the occasion of specified trigger events like a course deviation or disappearance from radar.

One only need consider a few factors to realize that a cloud-based system is a crucial development that current technology can easily handle. We need only to look at the cost of the search for a missing plane. According to France and Brazil, those two countries spent more than $40 million over two years to recover the black boxes from Air France Flight 447. Bloomberg reported the recovery cost of Air France 447 was $100 million. According to the South China Post, the cost of the (as yet unfound) MH370 will be as much as ten times more than AF447. Like the expense of MH370’s search, the cost of finding EgyptAir Flight 804 is still ongoing.

Even when Inmarsat’s streaming system will be available, the aviation industry is going to be resistant, mostly because it is going to be costly. Is this a cost that we must afford? I think it is.

Let me know your thoughts on this crucial topic at https://twitter.com/GeorgeHatcher

Tracking Down #MH370 or Physics of an Air Space Game of Marco Polo


The guessing/math triangulating the path of Inmarsat’s pings was the only thing experts seemed to agree on regarding to pinning down the location of Malaysia Airlines flight 370. Yet at the location, at least, the location according to the data laying out the path according to Inmarsat’s analysis, nothing was found in the recent search of the ocean floor off the coast of Australia. The engineers and mathematicians involved may have done their best but the guess seems to have been faulty or otherwise off somehow. If you will pardon the circular reasoning, if only we knew how it was off, we would know how it was off.

Investigators have come up with two maps that can be drawn based on the ping data, based on the speed. The variation is due to considerations of the pings which do not indicate the speed or direction the plane was moving, but only the probable distance between plane and satellite. See Inmarsat’s global representation …

Inmarsatglobe

However, there is opposition to the Inmarsat calculations which is presented by * Michael Exner (founder of the American Mobile Satellite Corporation) **Duncan Steel(physicist and visiting scientist at NASA’s Ames Research Center) and satellite technology consultant ***Tim Farrar which presents other data that should be considered. See the Dopplar shift jpg…

dopplarshift

My pragmatic response to these experts is a major simplification: just that the plane did not disappear into a textbook, under textbook conditions. The pings occurred in a real atmosphere, with atmospheric variations that were not and possibly could not have been taken into account. Not only are the speed, direction and height of the aircraft factors that must be taken into account, but also the quality of the atmosphere, density, weather, etc, plus factors that a non-mathmatical, non-scientist like myself would not even know how to bring into the picture. In this search at least, the untested math used is as vulnerable as statistics is to presenting a defective or imprecise representation, or a representation which would only be true under certain conditions.

For further study on this, * Michael Exner, the Atlantic Official Explanation article, input from physicist **Duncan Steele (who calculates “a uniform ring radius based on the aircraft-satellite range given the elevation angle and the satellite’s altitude, and the latitude of the sub-satellite point, the aircraft being taken to be at the same latitude in this simplified geometry; and satellite consultant***Tim Farrar.

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