That’s another thing about this that sounds absurd.
What are the chances that a fist or hammer banging on carbon fiber at 12000 feet down would generate sound waves audible to a flying aircraft?
It’s ridiculous.
Yes, it is.
google passive sonabouy.
That’s another thing about this that sounds absurd.
What are the chances that a fist or hammer banging on carbon fiber at 12000 feet down would generate sound waves audible to a flying aircraft?
It’s ridiculous.
Most searches by air use sonar buoys. Planes airdrop them.
The airplanes drop sonar buoys which float. They pick up acoustic noise and forward to plane via radio. They started that in WWII.
The aircraft dropped sonar buoys into the water and those buoys would transmit any noise back to the plane.
“What are the chances that a fist or hammer banging on carbon fiber at 12000 feet down would generate sound waves audible to a flying aircraft?”
Each end and the interior is metal.
The planes are monitoring radio waves from the sonar buoys they dropped.
It would be sonar buoys, dropped from an airplane.
Probably dropped sonobuoys into the water. The anti-sub buoy picks up noises and transmits them to the plane overhead.
They use sonobuoys.
I suspect the only reason they’re even searching for this thing right now is that there’s a not-so-remote possibility it is floating on the surface after all.
“ What are the chances that a fist or hammer banging on carbon fiber at 12000 feet down would generate sound waves audible to a flying aircraft?
It’s ridiculous.”
If you had read The Hunt For Red October, Clancy laid out how this works .
And that was a long time ago
As I understand it, the aircraft deploy sonar buoys on the ocean surface. The buoys pick up the sound and transmit to the aircraft.
Jim Noble wrote: “What are the chances that a fist or hammer banging on carbon fiber at 12000 feet down would generate sound waves audible to a flying aircraft?”
Sono bouys.
The door is made of titanium.
I suspect sub detection equipment used by the military is very very good at picking up these types of sounds. Sound does travel differently underwater.
But it could be anything banging around down there. I did hear it was happening every 30 minutes though. Natural sounds would not happen every 30 minutes. They would be random.