Is there a maximum depth for depth charges?

Lt.Fillipidis · 04-10-09, 03:27 PM

But they CAN ping me, cant they?
How is it possible for a thermal layer to absorb such noise?

Sailor Steve · 04-11-09, 02:42 PM

The thermal layer doesn't absorb the noise, it deflects it. It's like sticking a straw into a glass of water - the straw appears to be where it isn't. The thermal layer can make the first ping passing though bend, and if it hits the sub it bends again on the way back. The return signal can be off by dozens of yards.

Lt.Fillipidis · 04-11-09, 03:28 PM

I see. So its just like how light deflects on the surface.
The sound deflects twice so even if the uboat is at 100m its like pinging the bottom. Right?

Torplexed · 04-11-09, 05:44 PM

When you consider all the ways sound can bend it's surprising sonar works as well as it often does.

Link to the original article...

http://www.uboat.net/articles/index.html?article=45

04-11-09, 02:42 PM	#2
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	The thermal layer doesn't absorb the noise, it deflects it. It's like sticking a straw into a glass of water - the straw appears to be where it isn't. The thermal layer can make the first ping passing though bend, and if it hits the sub it bends again on the way back. The return signal can be off by dozens of yards. __________________ “Never do anything you can't take back.” —Rocky Russo

04-11-09, 05:44 PM	#4
Torplexed Let's Sink Sumptin' ! Join Date: Dec 2001 Location: Seattle, WA Posts: 5,823 Downloads: 43 Uploads: 0	When you consider all the ways sound can bend it's surprising sonar works as well as it often does. Link to the original article... http://www.uboat.net/articles/index.html?article=45 __________________ --Mobilis in Mobili--

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04-10-09, 03:27 PM	#1
Lt.Fillipidis Weps Join Date: Oct 2008 Location: Veria, Greece Posts: 365 Downloads: 44 Uploads: 0	But they CAN ping me, cant they? How is it possible for a thermal layer to absorb such noise?

04-11-09, 03:28 PM	#3
Lt.Fillipidis Weps Join Date: Oct 2008 Location: Veria, Greece Posts: 365 Downloads: 44 Uploads: 0	I see. So its just like how light deflects on the surface. The sound deflects twice so even if the uboat is at 100m its like pinging the bottom. Right?