Re: [PSUBS-MAILIST] Scuttle valves & Divorce Court

[Steven Mills <cirtemoeg@juno.com>]

On Wed, 10 Mar 2004 11:00:04 -0500 "Pierre Poulin" <pipo305@hotmail.com>
writes:
> Hi Steve!
> 
> Could that be used to estimate spped with a given thrust?
> 
> Pierre
> 

Hi Pierre,

Yes, I believe so.  That's why I was so intrigued by that AUV paper.
Ansys,
proEngineer is usually suited to high performance as in military subs
and other hi-speed craft.  I thought lowspeeds around 5+knots would be
insignificant. Besides, most ROVs/AUVs are designed for utility.
Hovering,
turning, stationary keeping, and slow rise/descent would be factors.

The AUV paper took into consideration surface area and chord of planes
like the bowplanes, also the thrusters...etc.

Erik had an interesting facet of his sub with the aft duct and the
v-tail. I was
curious to know if that was an advantage or contribute to parasitic drag.
Would the water compress going thru the duct aiding in thrust in forward
motion or just eliminate or add to turbulence.

Anyway, I'm still working on it.

--Steve



> 
> 
> ].
> >
> >Gotta get back on track.
> >
> >I'm searching and gathering a suite of tools to test out your sub 
> design.
> >And anyone elses' design for that matter. Performance-wise that is.
> >There isn't one definitive package. I'm taking my cue from that AUV
> >report
> >that I posted some time back. They used proEngineer, ANSYS, and a
> >mesh generator, but still had to tweak the software. I've come up 
> with
> >some
> >free software, but they don't quite hit the mark.  I'm thinking 
> maybe
> >aerodynamic CFDs since the laminar flow and boundary layers should 
> be
> >close approximating a wind tunnel.
> >
> >Well, that's what I'm doing now in between ranting and keeping 
> guard over
> >the toilet seat.
> >
> >Just thought you'd like to know....
> >--Steve
> >
> >
> >
> > >
> > > Steven Mills wrote:
> > >
> > > >On Wed, 10 Mar 2004 08:16:15 -0500 "Dan H." 
> <jmachine@adelphia.net>
> > > >writes:
> > > >
> > > >
> > > >>I'll even be courteous enough and try to remember to leave the
> > > seat
> > > >>down for
> > > >>you as long as you care to stay aboard and talk to Steve about
> > > doing
> > > >>the
> > > >>same.  :-)
> > > >>
> > > >>
> > > >>
> > > >
> > > >Weisenheimer. Just for that I'm ripping the seat off, ya'll can 
> sit
> > > on
> > > >porcelain.
> > > >brrrrr....
> > > >
> > > >: ) --Steve
> > > >
> > > >
> > > >
> > > 
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> > > >
> > >
> > >
> >
> >
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> 


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