There are a couple strikes against it. Even considering the much more
powerful pings a ship could emit, the black box would need a fairly
sophisticated amplifier and audio processor to separate the pings from
the general ocean noise. This very likely would use more power, not less.
It also introduces a lot more complexity. The pinger is supposed to
survive a plane crash and submersion under two miles of ocean water for
a month. The more complex the design, the more chances of something
going wrong.
A better solution would just be better batteries. Although it was
assumed that a crash site would be found within a month, after AF 447
and this flight that baseline might be reconsidered.
On 4/13/2014 11:43 AM, Doug Elrod wrote:
With all the talk about the batteries running down, perhaps they
need a "Black Box" which just sits there *listening* for some sort of
probe signal,
before responding with a black-box ping. I imagine that the
listening-function
would take much less energy than actually generating pings. This would
guarantee that you wouldn't be pinging UNLESS someone is in range to
hear it.
Has this sort of system been tried? Of course, you could have a
hybrid system
that would ping for a while and then go into energy-conservation mode and
listen for a probe....
-Doug Elrod ([email protected])
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