In use of active sonar (which is very verboten for our guys) you receive a return, or “ping” from the impedence mismatch of the air in the sub not the metal sub itself, that comes from the difference in the speed of sound in air/water/solid objects. Nothing classified here, just basic physics.
So you construct a device that causes the sound to “slide” around an object, instead of giving a ping off the air inside the object. If this is actual, and not theory it would work better than the sound dreddening tiles we use now!
oh man..felt like I was back teaching STS “A” school for a second there!
Is the FleetASW base still around in San Diego?
Hey guys, thanks for the info.
I’m glad to know how that ping thingy works. I think my pings here on FR are broke, sometimes, LOL.
Seriously, the only thing I know about submarines is what I’ve read in novels or seen in movies. (Yeah, I know - great source for factual info, right? LOL)
I love stories about subs. That started when I was a teenager and read “Run Silent, Run Deep” and “Up Periscope”.
And one of my favorite movies is “The Hunt for Red October” with Sean Connery.
(here’s a trailer if you haven’t seen the movie)
http://www.imdb.com/video/screenplay/vi334758681/
(Of course, I haven’t seen or read any Tom Clancey stuff that I didn’t like, heheh.)
;^D