Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!uxc.cso.uiuc.edu!iuvax!rutgers!att!cbnews!military
From: tek@CS.UCLA.EDU (Ted Kim (ATW))
Newsgroups: sci.military
Subject: Re: F-4 (really Seawolf)
Message-ID: <8238@cbnews.ATT.COM>
Date: 13 Jul 89 03:09:34 GMT
References: <7740@cbnews.ATT.COM> <8032@cbnews.ATT.COM> <8081@cbnews.ATT.COM> <8181@cbnews.ATT.COM>
Sender: military@cbnews.ATT.COM
Organization: UCLA Computer Science Department
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From: tek@CS.UCLA.EDU (Ted Kim (ATW))

In article <8181@cbnews.ATT.COM> Dave Mead writes:
>
>I thought the new attack subs would have a *much* faster hull speed for
>quiet running (laminar flow?). All fast current subs make a lot of noise
>when running near max speed and can only achieve ~6 knots or so quiet. New
>tricks and coatings allow the new subs to go *fast* and *quiet* at the
>same time. A big improvement.

The information I have heard, has Seawolf capable of going "silent"
upto ~15 knots (vs. ~5 knots for LA Class). The pump jet propulsion
unit is not supposed to cavitate at any speed the sub is capable of.
(Though, cavitation along certain hull points may occur at high
speeds.) I have heard LA Class screws start cavitating somewhere in
the 15-25 knot range. 

Also, in my previous article, I gave the impression that Improved LA
would not be able to fire the new Sea Lance (when available). This is
incorrect. 

-ted

Ted Kim                           ARPAnet: tek@penzance.cs.ucla.edu
UCLA Computer Science Department  UUCP:    ...!ucbvax!cs.ucla.edu!tek
3804C Boelter Hall                PHONE:   (213) 206-8696
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