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Politics : Formerly About Advanced Micro Devices
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From: tejek6/11/2009 5:56:25 PM
   of 1575622
 
I have wondered before why don't planes upload important info to a satellite instead of storing it in a 'black' box. I assumed the cost to change over would be prohibitive. As it turns out, it isn't:

"Significant upgrades to aircraft would not even be required, according to Francis. All that is needed, he says, is to reprogram the software in the communication system, turning it into a sort of online black box. Krishna Kavi, an engineer and professor at the University of North Texas in Denton, presented the US Federal Aviation Administration (FAA) with a similar system 10 years ago. "The cost is low," he says.

For the 256 parameters recorded by a black box, Kavi came up with a volume of data requiring transmission of four to eight kilobits per second. "This is a fraction of what mobile wireless devices transmit today," says Kavi."

businessweek.com
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