440
As Malaysia Airlines plane could disappear without a trace in 2014
There was a scientific obyasnenie8 March 2014 "Boeing 777" airline Malaysia Airlines disappeared from the radar on the way to Beijing from Kuala Lumpur, capital of Malaysia. The last signal controllers he sent flying over the South China Sea - and vanished.
It was a large, long-range aircraft that can survive in the air for 22 hours without refueling, which in economy class of ten seats in the front row. On board were 12 crew members and 227 passengers. All these many months, the number simply missing (and only in January 2015, after ten months, were finally declared dead) - because of the airplane there was not a trace. It was as if he evaporated. On the whole route (and around) did not find any flotsam or huge - it is usually seen from space - Spot jet fuel, the traditional signs of the crash over the ocean.
Now, in June 2015, there was a scientific explanation as to how this could happen. But if the plane crashes usually critiques published in a special edition for the aeronautical engineer and pilot, this study unexpectedly published the authoritative magazine about pure mathematics called Notices of the AMS («Notes for the American Mathematical Society»).
The authors - Professor of Mathematics Texas A & M University Gung Cheng (who now works at a branch of the university in Dubai) and six scientists - we understand the issue of collision of the aircraft with water as an abstract problem of mathematical physics. More precisely, the hydrodynamics. They relied in particular on the idea of the classic science Theodore von Karman, who in the middle of the XX century described such diverse phenomena as the overcoming of the aircraft sound barrier and a chain of vortices in the clouds above tropical islands.
If the water body angled cuts - e.g., such as an airplane, it pulls followed by a further portion of the air moving in the air "bubble". This "bubble" comes a variety of complex processes - such as cavitation, ie the sequence of cycles of condensation and evaporation in bubbles that can destroy the steel blades of the giant ship propellers. From how to evolve a "bubble" depends on the fate of the aircraft - for example, when the shell of the fuselage break into small fragments. And these fragments emerge later, making it clear where the disaster struck.
The article dealt with the whole five scenarios, depending on the angle at which the aircraft entered the water. One of these scenarios describes a drama with a happy ending - safe splashdown passenger plane bound for New York, the water of the Hudson in 2009.
But in the case of flight MH370 events seem to have evolved since. He entered the water at an angle close to the direct (90-93 degrees). The wings and tail come off immediately and soon drowned - it's still heavy pieces of metal. But the hull is gone in seconds to a depth of 30-40 meters, it was entirely flattened entire weight of the water and no longer surfaced. The model predicts that he is now lying on the ocean floor upside down. This scenario is shown in the video released by the authors.
That could lead to a fall in such a regime? The sharp climb with broken aileron or stabilizers. Or failure of the autopilot that the crew was not able to fix it - if, for example, pilots attacked by terrorists. How exactly is unknown.
In any case, for the development of events described by mathematicians do not need no mystery and no "deus ex machina" - like alien abductions or landing on a secret underground airfield in Afghanistan. And these "conspiracy theories" after the disappearance of the aircraft appeared quite a lot.
However, because of the new scenario mathematicians should be that check its accuracy is almost impossible. Just because no single evidence of the catastrophe on the surface of the water there is no chance to find a pressurized fuselage flattened at the bottom of the Pacific or the Indian Ocean.
via www.geo.ru/nauka/pod-pryamym-uglom
It was a large, long-range aircraft that can survive in the air for 22 hours without refueling, which in economy class of ten seats in the front row. On board were 12 crew members and 227 passengers. All these many months, the number simply missing (and only in January 2015, after ten months, were finally declared dead) - because of the airplane there was not a trace. It was as if he evaporated. On the whole route (and around) did not find any flotsam or huge - it is usually seen from space - Spot jet fuel, the traditional signs of the crash over the ocean.
Now, in June 2015, there was a scientific explanation as to how this could happen. But if the plane crashes usually critiques published in a special edition for the aeronautical engineer and pilot, this study unexpectedly published the authoritative magazine about pure mathematics called Notices of the AMS («Notes for the American Mathematical Society»).
The authors - Professor of Mathematics Texas A & M University Gung Cheng (who now works at a branch of the university in Dubai) and six scientists - we understand the issue of collision of the aircraft with water as an abstract problem of mathematical physics. More precisely, the hydrodynamics. They relied in particular on the idea of the classic science Theodore von Karman, who in the middle of the XX century described such diverse phenomena as the overcoming of the aircraft sound barrier and a chain of vortices in the clouds above tropical islands.
If the water body angled cuts - e.g., such as an airplane, it pulls followed by a further portion of the air moving in the air "bubble". This "bubble" comes a variety of complex processes - such as cavitation, ie the sequence of cycles of condensation and evaporation in bubbles that can destroy the steel blades of the giant ship propellers. From how to evolve a "bubble" depends on the fate of the aircraft - for example, when the shell of the fuselage break into small fragments. And these fragments emerge later, making it clear where the disaster struck.
The article dealt with the whole five scenarios, depending on the angle at which the aircraft entered the water. One of these scenarios describes a drama with a happy ending - safe splashdown passenger plane bound for New York, the water of the Hudson in 2009.
But in the case of flight MH370 events seem to have evolved since. He entered the water at an angle close to the direct (90-93 degrees). The wings and tail come off immediately and soon drowned - it's still heavy pieces of metal. But the hull is gone in seconds to a depth of 30-40 meters, it was entirely flattened entire weight of the water and no longer surfaced. The model predicts that he is now lying on the ocean floor upside down. This scenario is shown in the video released by the authors.
That could lead to a fall in such a regime? The sharp climb with broken aileron or stabilizers. Or failure of the autopilot that the crew was not able to fix it - if, for example, pilots attacked by terrorists. How exactly is unknown.
In any case, for the development of events described by mathematicians do not need no mystery and no "deus ex machina" - like alien abductions or landing on a secret underground airfield in Afghanistan. And these "conspiracy theories" after the disappearance of the aircraft appeared quite a lot.
However, because of the new scenario mathematicians should be that check its accuracy is almost impossible. Just because no single evidence of the catastrophe on the surface of the water there is no chance to find a pressurized fuselage flattened at the bottom of the Pacific or the Indian Ocean.
via www.geo.ru/nauka/pod-pryamym-uglom
"Any power equally harmful" Oscar Wilde on the superiority of individualism
"Honest divorce": how to divide all marital property exactly in half