<b>Novel</b></b> analysis helped narrow <b><b>Malaysian</b></b <b>...</b> - <b>Novel</b> M'sia - Blog Novel Malaysia |
| <b>Novel</b></b> analysis helped narrow <b><b>Malaysian</b></b <b>...</b> - <b>Novel</b> M'sia Posted: 02 Apr 2014 02:30 PM PDT | <b>Novel</b> analysis helped narrow <b>Malaysian</b> jet search (Update) Posted: 25 Mar 2014 04:50 AM PDT Mar 25, 2014 by Justin PritchardIn this Monday, March 24, 2014 photo, crewmen on board an RAAF AP-3C Orion aircraft look at their radar screens whilst searching for missing Malaysia Airlines Flight MH370 over the Indian Ocean. After 17 days of desperation and doubt over the missing Malaysia Airlines jet, Malaysian officials on Monday said an analysis of satellite data points to a "heartbreaking" conclusion: Flight 370 met its end in the southern reaches of the Indian Ocean, and none of those aboard survived. (AP Photo/Richard Wainwright, Pool) Investigators are closer to solving an international aviation mystery thanks to a British communications satellite and classroom physics. An analysis of faint signals sent from Malaysia Airlines Flight 370 to an Inmarsat satellite led officials to conclude the plane crashed in a remote area of the southern Indian Ocean. More precise information about the plane's position when it sent the last signals is helping authorities refine the search being undertaken by planes and ships in seas 2,500 kilometers (1,550 miles) southwest of Perth, Australia. Investigators had little to examine otherwise because other communications were lost early in the flight March 8. THE TIMING Even with other communications shut down, the plane sent an automatic signal—a "ping" or a "handshake"—every hour to an Inmarsat satellite. Flight 370 completed six pings, and the time each took to be sent by the plane and received by the satellite showed the plane's range from the satellite, according to the U.K. Air Accidents Investigation Branch. This initial analysis showed the last ping came from a position along one of two vast arcs north and south from the Malaysian Peninsula. DOPPLER EFFECT Think of a horn being honked in a passing car. To an observer, the sound is high pitched as the car approaches and is lower after the car passes. On approach, each successive sound wave is sent from a slightly closer position to the observer. The sound waves get compressed, resulting in a higher frequency. The opposite happens as the car moves away. It's called the Doppler effect for Austrian physicist Christian Doppler, who put forward the theory in 1842. The same effect applies to the pings, which would arrive to the satellite at a higher frequency if the plane was moving toward the satellite and decrease in frequency when moving away. For the analysis that led to Monday's conclusion the plane had crashed, Inmarsat studied the satellite communications made while the plane was on the ground at Kuala Lumpur airport and early in its flight. In this Monday, March 24, 2014 photo, a crewman of an RAAF AP-3C Orion aircraft loads a sonar buoy that will mark the location of any wreckage found whilst searching for missing Malaysia Airlines Flight MH370 over the Indian Ocean. After 17 days of desperation and doubt over the missing Malaysia Airlines jet, Malaysian officials on Monday said an analysis of satellite data points to a "heartbreaking" conclusion: Flight 370 met its end in the southern reaches of the Indian Ocean, and none of those aboard survived. (AP Photo/Richard Wainwright, Pool) It considered aircraft performance, the satellite's fixed location and other known factors. By knowing how the Doppler effect would apply to the satellite communications, Inmarsat could calculate the possible positions, direction of travel and speed of the plane. The company then compared its predictions to six other Boeing 777 aircraft that flew the same day, and found good agreement, according to Malaysian Defense Minister Hishammuddin Hussein. Inmarsat did not respond to repeated requests for comment from The Associated Press. "By analyzing that you can determine speed and direction," said Joseph Bermudez Jr., chief analytics officer and co-founder of AllSource Analysis, a commercial satellite intelligence firm. And by determining the area from which the last signal was sent, then estimating fuel left, it "could give you an approximate area of where the aircraft impacted." MORE ANALYSIS Inmarsat sent its data to investigators days after the plane went missing. But it continued to run its own analysis to see if it could wring out any more clues. The company's engineers were dealing with a "totally new area," Chris McLaughlin, senior vice president of external affairs at Inmarsat, told the BBC. "This really was a bit of a shot in the dark." However, the latest information could only go so far in pinpointing the jet's location. "We can't help you with any closer data," he said. Gregory D. Durgin, a professor who teaches satellite communications at the Georgia Institute of Technology, said that because Inmarsat was using a different kind of satellite in a novel way, he expects it would locate the last ping from the Malaysia Airlines lane within "around 100 miles (161 kilometers) of precision." THE COMPANY Inmarsat Plc started out in 1979 as an intergovernmental organization with the aim of helping ships communicate while at sea. It became a private company in 1999 and listed its shares in London in 2005. Customers now include governments, airlines, broadcast media, oil and gas companies, aid agencies as well as merchant shipping. They use hand-held satellite phones, laptop size Internet devices and antennas linked to the company's 10 satellites to communicate.
© 2014 The Associated Press. All rights reserved. Specific Tension Ratio of V-Belt Drive Apr 01, 2014 In a V-Belt Drive, it is said that when a New Belt is installed, the Tension Ratio shouldn't exceed 5:1. But isn't...Top 6 challenges for engineering in the first quarter of 21st CentruryMar 31, 2014 Hey all, I have an interview coming up and I have been asked to consider the following question: "What are the...Materials and Particle TrappingMar 30, 2014 Please excuse me if this isn't a physics question - I'm not sure where it belongs. Felt, such as this:...Cantilever beam with curved beam on the end.Mar 29, 2014 struggling to find info on this so figgured i'd as. For two beams attached to each other, one a straight catilever...finding density of water and a solid materialMar 29, 2014 hi,could some one please help me to understand how to find the density of water using a specific gravity bottle?and...Solving trusses with the Direct Stiffness MethodMar 28, 2014 I'm creating a computer implementation to solve planar trusses. And I'm not sure how to check if the truss is solvable...More from Physics Forums - General Engineering Related StoriesThree pieces of evidence point to jet's takeover
There are three pieces of evidence that aviation safety experts say make it clear the missing Malaysia Airlines jet was taken over by someone who was knowledgeable about how the plane worked. Thailand gives radar data 10 days after plane lost (Update)
Thailand's military said Tuesday that its radar detected a plane that may have been Malaysia Airlines Flight 370 just minutes after the jetliner's communications went down, and that it didn't share the information with Malaysia ... Malaysian official says missing plane hijacked
A Malaysian investigation into the missing flight 370 has concluded that one or more people with flying experience switched off communications devices and deliberately steered the airliner off-course, a Malaysian ... Thai radar adds possible clue to trace jet's route
New radar data from Thailand gave Malaysian investigators more potential clues Wednesday for how to retrace the course of the missing Malaysian airliner, while a massive multinational search unfolded in an ... Search for missing jet expands toward Indian Ocean
The international search for the missing Malaysian jetliner expanded westward Friday toward the Indian Ocean amid signs the aircraft may have flown on for hours after its last contact with air-traffic control ... Malaysian plane drama fuels aviation security rethink
As the hunt for Malaysia Airlines Flight 370 enters a third week, the piecemeal returns from one of the most intense, international searches in living memory have delivered a public and institutional shock ... Recommended for youCriticism of violent video games has decreased as technology has improved, gamers age
Members of the media and others often have attributed violence in video games as a potential cause of social ills, such as increased levels of teen violence and school shootings. Now, a University of Missouri researcher has ... Deep water search for jet could turn on robot subs
Two miles down or more and darker than night, the ocean becomes a particularly challenging place for human searchers. Ocean garbage frustrates search for Flight 370
Sometimes the object spotted in the water is a snarled fishing line. Or a buoy. Or something that might once have been the lid to an ice box. Not once—not yet at least—has it been a clue. The technological search for MH370's black box
As the effort to find Malaysian Airlines flight MH370 moves inexorably towards the recovery stage, the challenge of finding the plane's flight recorder (called the "black box" even though it's actually bright orange) on the ocean fl ... Seabed of jet hunt zone mostly flat with one trench (Update)
Two miles beneath the sea surface where satellites and planes are looking for debris from the missing Malaysian jet, the ocean floor is cold, dark, covered in a squishy muck of dead plankton and—in a potential ... Flight 370 search shifts after new look at data
Three weeks into the mystery of Flight 370, investigators relying on newly analyzed satellite data shifted the search zone yet again, focusing on a swath of Indian Ocean where better conditions could help ... User comments : 0More news storiesTech review: The future is bright for LED bulbs — and your walletNot too long ago, I wrote a review of several 60 watt-equivalent bulbs that use light-emitting diodes. I touched on a few ideas about the future of light bulbs that prompted some conversation both online and in the office. Amazon steps up TV push with streaming video device (Update 2)Amazon stepped up its battle for television viewers on Wednesday, unveiling a new media streaming device touted as simplifying the experience of watching video online. Browser tool Sell Hack gets C&D from LinkedIn(Phys.org) —March did not exactly go out like a lamb for Sell Hack, which got a cease and desist letter from LinkedIn because the Sell Hack browser extension, once installed, could provide a pop-up button ... With Facebook purchase, virtual reality grows up fastIt's long been the stuff of science fiction, the ability to wear a headset and feel as if you're in another world. Intel makes new moves on Edison: Atom yes, Quark no(Phys.org) —Last month's Intel blog post by an Intel VP, Michael Bell, announced the latest enhancements for Edison, the company's platform with built-in wireless, targeted for builders of small form factor ... Ancient volcanic explosions shed light on Mercury's originsMercury was long thought to be lacking volatile compounds that cause explosive volcanism. That view started to change when the MESSENGER spacecraft returned pictures of pyroclastic deposits—the telltale ... Could NASA's 2015 budget leave Mars rover Opportunity high and dry?NASA's Mars rover Opportunity recently passed its 10th anniversary exploring the Red Planet and embarked on what scientists called a brand new mission, but the trusty little rover's funding has been thrust ... 'Nanobionics' aims to give plants super powersPlants are an engineering marvel of nature. Fueled by sunlight, they recycle our carbon dioxide waste into fresh oxygen for us to breathe. Plus, they make the world prettier. But, with a little help from us humans, can they ... Science-themed music videos boost scientific literacy, study showsAs the United States puts ever-greater emphasis on science, technology, engineering and mathematics education to keep competitive in the global economy, schools are trying to figure out how to improve student learning in ... Lifespan researcher develops first blood test to predict risk of sudden cardiac deathA researcher at the Cardiovascular Institute (CVI) at Rhode Island, The Miriam and Newport hospitals has found that a simple blood test can predict a person's risk for sudden cardiac death, enabling physicians to more quickly ...
© Phys.org™ 2003-2013, Science X network   Mar 25, 2014 by Justin PritchardIn this Monday, March 24, 2014 photo, crewmen on board an RAAF AP-3C Orion aircraft look at their radar screens whilst searching for missing Malaysia Airlines Flight MH370 over the Indian Ocean. After 17 days of desperation and doubt over the missing Malaysia Airlines jet, Malaysian officials on Monday said an analysis of satellite data points to a "heartbreaking" conclusion: Flight 370 met its end in the southern reaches of the Indian Ocean, and none of those aboard survived. (AP Photo/Richard Wainwright, Pool) Investigators are closer to solving an international aviation mystery thanks to a British communications satellite and classroom physics. An analysis of faint signals sent from Malaysia Airlines Flight 370 to an Inmarsat satellite led officials to conclude the plane crashed in a remote area of the southern Indian Ocean. More precise information about the plane's position when it sent the last signals is helping authorities refine the search being undertaken by planes and ships in seas 2,500 kilometers (1,550 miles) southwest of Perth, Australia. Investigators had little to examine otherwise because other communications were lost early in the flight March 8. THE TIMING Even with other communications shut down, the plane sent an automatic signal—a "ping" or a "handshake"—every hour to an Inmarsat satellite. Flight 370 completed six pings, and the time each took to be sent by the plane and received by the satellite showed the plane's range from the satellite, according to the U.K. Air Accidents Investigation Branch. This initial analysis showed the last ping came from a position along one of two vast arcs north and south from the Malaysian Peninsula. DOPPLER EFFECT Think of a horn being honked in a passing car. To an observer, the sound is high pitched as the car approaches and is lower after the car passes. On approach, each successive sound wave is sent from a slightly closer position to the observer. The sound waves get compressed, resulting in a higher frequency. The opposite happens as the car moves away. It's called the Doppler effect for Austrian physicist Christian Doppler, who put forward the theory in 1842. The same effect applies to the pings, which would arrive to the satellite at a higher frequency if the plane was moving toward the satellite and decrease in frequency when moving away. For the analysis that led to Monday's conclusion the plane had crashed, Inmarsat studied the satellite communications made while the plane was on the ground at Kuala Lumpur airport and early in its flight. In this Monday, March 24, 2014 photo, a crewman of an RAAF AP-3C Orion aircraft loads a sonar buoy that will mark the location of any wreckage found whilst searching for missing Malaysia Airlines Flight MH370 over the Indian Ocean. After 17 days of desperation and doubt over the missing Malaysia Airlines jet, Malaysian officials on Monday said an analysis of satellite data points to a "heartbreaking" conclusion: Flight 370 met its end in the southern reaches of the Indian Ocean, and none of those aboard survived. (AP Photo/Richard Wainwright, Pool) It considered aircraft performance, the satellite's fixed location and other known factors. By knowing how the Doppler effect would apply to the satellite communications, Inmarsat could calculate the possible positions, direction of travel and speed of the plane. The company then compared its predictions to six other Boeing 777 aircraft that flew the same day, and found good agreement, according to Malaysian Defense Minister Hishammuddin Hussein. Inmarsat did not respond to repeated requests for comment from The Associated Press. "By analyzing that you can determine speed and direction," said Joseph Bermudez Jr., chief analytics officer and co-founder of AllSource Analysis, a commercial satellite intelligence firm. And by determining the area from which the last signal was sent, then estimating fuel left, it "could give you an approximate area of where the aircraft impacted." MORE ANALYSIS Inmarsat sent its data to investigators days after the plane went missing. But it continued to run its own analysis to see if it could wring out any more clues. The company's engineers were dealing with a "totally new area," Chris McLaughlin, senior vice president of external affairs at Inmarsat, told the BBC. "This really was a bit of a shot in the dark." However, the latest information could only go so far in pinpointing the jet's location. "We can't help you with any closer data," he said. Gregory D. Durgin, a professor who teaches satellite communications at the Georgia Institute of Technology, said that because Inmarsat was using a different kind of satellite in a novel way, he expects it would locate the last ping from the Malaysia Airlines lane within "around 100 miles (161 kilometers) of precision." THE COMPANY Inmarsat Plc started out in 1979 as an intergovernmental organization with the aim of helping ships communicate while at sea. It became a private company in 1999 and listed its shares in London in 2005. Customers now include governments, airlines, broadcast media, oil and gas companies, aid agencies as well as merchant shipping. They use hand-held satellite phones, laptop size Internet devices and antennas linked to the company's 10 satellites to communicate.
© 2014 The Associated Press. All rights reserved. Specific Tension Ratio of V-Belt DriveApr 01, 2014In a V-Belt Drive, it is said that when a New Belt is installed, the Tension Ratio shouldn't exceed 5:1. But isn't...Top 6 challenges for engineering in the first quarter of 21st CentruryMar 31, 2014Hey all, I have an interview coming up and I have been asked to consider the following question: "What are the...Materials and Particle TrappingMar 30, 2014Please excuse me if this isn't a physics question - I'm not sure where it belongs. Felt, such as this:...Cantilever beam with curved beam on the end.Mar 29, 2014struggling to find info on this so figgured i'd as. For two beams attached to each other, one a straight catilever...finding density of water and a solid materialMar 29, 2014hi,could some one please help me to understand how to find the density of water using a specific gravity bottle?and...Solving trusses with the Direct Stiffness MethodMar 28, 2014I'm creating a computer implementation to solve planar trusses. And I'm not sure how to check if the truss is solvable...More from Physics Forums - General Engineering Related StoriesThree pieces of evidence point to jet's takeover
There are three pieces of evidence that aviation safety experts say make it clear the missing Malaysia Airlines jet was taken over by someone who was knowledgeable about how the plane worked. Thailand gives radar data 10 days after plane lost (Update)
Thailand's military said Tuesday that its radar detected a plane that may have been Malaysia Airlines Flight 370 just minutes after the jetliner's communications went down, and that it didn't share the information with Malaysia ... Malaysian official says missing plane hijacked
A Malaysian investigation into the missing flight 370 has concluded that one or more people with flying experience switched off communications devices and deliberately steered the airliner off-course, a Malaysian ... Thai radar adds possible clue to trace jet's route
New radar data from Thailand gave Malaysian investigators more potential clues Wednesday for how to retrace the course of the missing Malaysian airliner, while a massive multinational search unfolded in an ... Search for missing jet expands toward Indian Ocean
The international search for the missing Malaysian jetliner expanded westward Friday toward the Indian Ocean amid signs the aircraft may have flown on for hours after its last contact with air-traffic control ... Malaysian plane drama fuels aviation security rethink
As the hunt for Malaysia Airlines Flight 370 enters a third week, the piecemeal returns from one of the most intense, international searches in living memory have delivered a public and institutional shock ... Recommended for youCriticism of violent video games has decreased as technology has improved, gamers age
Members of the media and others often have attributed violence in video games as a potential cause of social ills, such as increased levels of teen violence and school shootings. Now, a University of Missouri researcher has ... Deep water search for jet could turn on robot subs
Two miles down or more and darker than night, the ocean becomes a particularly challenging place for human searchers. Ocean garbage frustrates search for Flight 370
Sometimes the object spotted in the water is a snarled fishing line. Or a buoy. Or something that might once have been the lid to an ice box. Not once—not yet at least—has it been a clue. The technological search for MH370's black box
As the effort to find Malaysian Airlines flight MH370 moves inexorably towards the recovery stage, the challenge of finding the plane's flight recorder (called the "black box" even though it's actually bright orange) on the ocean fl ... Seabed of jet hunt zone mostly flat with one trench (Update)
Two miles beneath the sea surface where satellites and planes are looking for debris from the missing Malaysian jet, the ocean floor is cold, dark, covered in a squishy muck of dead plankton and—in a potential ... Flight 370 search shifts after new look at data
Three weeks into the mystery of Flight 370, investigators relying on newly analyzed satellite data shifted the search zone yet again, focusing on a swath of Indian Ocean where better conditions could help ... User comments : 0More news storiesTech review: The future is bright for LED bulbs — and your walletNot too long ago, I wrote a review of several 60 watt-equivalent bulbs that use light-emitting diodes. I touched on a few ideas about the future of light bulbs that prompted some conversation both online and in the office. Amazon steps up TV push with streaming video device (Update 2)Amazon stepped up its battle for television viewers on Wednesday, unveiling a new media streaming device touted as simplifying the experience of watching video online. Browser tool Sell Hack gets C&D from LinkedIn(Phys.org) —March did not exactly go out like a lamb for Sell Hack, which got a cease and desist letter from LinkedIn because the Sell Hack browser extension, once installed, could provide a pop-up button ... With Facebook purchase, virtual reality grows up fastIt's long been the stuff of science fiction, the ability to wear a headset and feel as if you're in another world. Intel makes new moves on Edison: Atom yes, Quark no(Phys.org) —Last month's Intel blog post by an Intel VP, Michael Bell, announced the latest enhancements for Edison, the company's platform with built-in wireless, targeted for builders of small form factor ... Ancient volcanic explosions shed light on Mercury's originsMercury was long thought to be lacking volatile compounds that cause explosive volcanism. That view started to change when the MESSENGER spacecraft returned pictures of pyroclastic deposits—the telltale ... Could NASA's 2015 budget leave Mars rover Opportunity high and dry?NASA's Mars rover Opportunity recently passed its 10th anniversary exploring the Red Planet and embarked on what scientists called a brand new mission, but the trusty little rover's funding has been thrust ... 'Nanobionics' aims to give plants super powersPlants are an engineering marvel of nature. Fueled by sunlight, they recycle our carbon dioxide waste into fresh oxygen for us to breathe. Plus, they make the world prettier. But, with a little help from us humans, can they ... Science-themed music videos boost scientific literacy, study showsAs the United States puts ever-greater emphasis on science, technology, engineering and mathematics education to keep competitive in the global economy, schools are trying to figure out how to improve student learning in ... Lifespan researcher develops first blood test to predict risk of sudden cardiac deathA researcher at the Cardiovascular Institute (CVI) at Rhode Island, The Miriam and Newport hospitals has found that a simple blood test can predict a person's risk for sudden cardiac death, enabling physicians to more quickly ...
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