[Date Prev][Date Next] [Chronological] [Thread] [Top]

RE: A sub question



The sub I am designing has two thrusters with 360 degree freedom on
opposite sides of the hull.  I could still make it slightly positive and
simply use the thrusters to counteract the bouyancy when stopped.  The
problem is this would tend to raise/stir the silt.  Maybe a reasonable
tradeoff.

> ----------
> From: 	Jon@huv.com[SMTP:Jon@huv.com]
> Sent: 	Wednesday, September 09, 1998 12:59 PM
> To: 	personal_submersibles@psubs.org
> Subject: 	Re: A sub question 
> 
> On Wed, 09 Sep 1998 15:11:41 -0400, "Alan D. Secor"
> <secor@btv.ibm.com>
> wrote:
> 
> > AUVs have the same problem BUT are they positively buoyant?  
> 
> Well, the one I'm building is :-) Not as positively buoyant as a
> manned sub
> like Deep Flight, but it will float up if it stops.
> 
> > I imagine they
> > can stop or go slow to avoid an object without floating to the
> surface.
> 
> Positively buoyant subs can stop too, they'll just start floating up
> if you
> do. That's a pretty reasonable tradeoff for collision avoidance. They
> can
> also turn, angle up or down, etc.
> 
> Also, just because a sub is positively buoyant, doesn't mean it has to
> float to the surface everytime it stops. It will float up, yes, but as
> soon
> as you start moving again and establish flow across the fins you're
> back in
> control again.
> 
> Later,
> Jon
> 
> --------------------------------------------------------------
>    Jon Hylands      Jon@huv.com      http://www.huv.com/jon
> 
>   Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
>            http://www.huv.com
>