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May 6, 2011 12:34 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/3u2kkT_QRMA/air-france-447-how-s.html
Air France 447: How scientists found a needle in a haystack
The cockpit voice recorder from Air France 447, as it was found at the bottom of the Atlantic Ocean. Last weekend, investigators announced that they had recovered the flight data recorder from the wreckage of Air France 447—a jetliner that crashed in the deep Atlantic two years ago. But, while the discovery of the data recorder is recent, the story of how Flight 447 was found goes back a month. This year's search was the fourth attempt to find the wreckage of Flight 447, and it probably would have been the last, even if the plane hadn't been found. Previous searches had been done by boat, mini-sub, and—back when there was still a chance of catching the audio signal from the plane's black boxes—underwater acoustic sensors. In 2010, scientists from the Woods Hole Oceanographic Institute were brought in to search for the crash site using autonomous robot subs. Still nothing had been found. On March 22, 2011, the Woods Hole team set out from Brazil to try again. They'd barely been at the search location for a week when they found what they were looking for. On April 3, researchers spotted the plane's debris field, 13,000 feet down, smack in the middle of a massive underwater mountain range. The success was astounding, but I wanted to know ... what made this search different from the others? What could the team from Woods Hole do that other groups could not, and how did their system work? To find out, I spoke with Mike Purcell, senior engineer with Woods Hole, and the chief of sea search operations for the mission....
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/3u2kkT_QRMA/air-france-447-how-s.html
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