Science Abuse Posted November 13, 2007 Report Share Posted November 13, 2007 http://www.dailymail.co.uk/pages/live/articles/news/worldnews.html?in_article_id=492804&in_page_id=1811 I recognise the implications of this, but also recognise that it is funny and impressive. You can respect people that you don't like. C'mon, its a fucking diesel-electric! Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted November 13, 2007 Report Share Posted November 13, 2007 An unnamed source from a UK paper. It's lucky it didn't get blown out of the water, and vice versa. Quote Link to comment Share on other sites More sharing options...
Putty Posted November 13, 2007 Report Share Posted November 13, 2007 Damn....How's that happen. Quote Link to comment Share on other sites More sharing options...
Akula Posted November 13, 2007 Report Share Posted November 13, 2007 Would you like the opinion of a Submarine Sonar Tech? Quote Link to comment Share on other sites More sharing options...
SpaceGhost Posted November 13, 2007 Report Share Posted November 13, 2007 let's have it.... Quote Link to comment Share on other sites More sharing options...
Akula Posted November 13, 2007 Report Share Posted November 13, 2007 Without giving away any of our secrets I can tell you this. Diesel submarines are very, very quiet. They operate on DC current. The cyclical nature of AC makes a frequency that can be detected a fairly long way away. The fact that DC doesn't make much noise makes it extremely hard to detect. When Walker sold his secrets about the US, one of the things he sold was our sound dampening technology and how to make a sub silent. If the Kitty Hawk battle group didn't have a fast boat in her group they wouldn't have stood a chance. If they did have a fast boat and it didn't find this rogue ship, it is because they are really that hard to find. We did an op with the USS Minneapolis and after two hours of us tracking her the USS Minn called us via the underwater comms and said "Where are you?" Quiet submarines are really hard to find. Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted November 13, 2007 Author Report Share Posted November 13, 2007 Without giving away any of our secrets I can tell you this. Diesel submarines are very, very quiet. They operate on DC current. The cyclical nature of AC makes a frequency that can be detected a fairly long way away. The fact that DC doesn't make much noise makes it extremely hard to detect. Do the nukes use AC? My old boss was a submariner in the 50s/60s, and said keeping the motors quiet was the biggest hurdle to putting the nukes in normal service. From his normal service, he had some good stories about patrols during the Cuban blockade, and exchanging "activites" with Cuban boats and russian a sub. Didn't make the papers though. Quote Link to comment Share on other sites More sharing options...
Akula Posted November 13, 2007 Report Share Posted November 13, 2007 Nuclear powered submarines are all AC. Funny thing is we produce AC power at 60 hz, step it to 400 hz, then turn it into DC for the equipment to use. There are lots of systems that use the 60 hz power too. Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted November 13, 2007 Author Report Share Posted November 13, 2007 Wow, the Navy tries and tries, but still cant avoid the AC/DC stereotype. Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted November 13, 2007 Report Share Posted November 13, 2007 Zing. Quote Link to comment Share on other sites More sharing options...
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