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David,
Why are you think they will not have any use on small
submersibles?
Brian
Jon,
Having been in the Navy as a sonar technician, I was really curious if I could
actually pull off a trainable passive sonar system. In that such a system
would require almost constant investigation, it would really have little or no
use aboard these really small submarines but perhaps some larger vessels could
see a use for such a system.
It is really just a
personal challenge that I undertook this project. It would still be
interesting to see how effective and accurate this set up will
be.
David Bartsch
> Date: Sun, 12 Jul 2009 16:34:27 -0400
>
From: jonw@psubs.org
> To: personal_submersibles@psubs.org
>
Subject: Re: [PSUBS-MAILIST] passive hydrophone array pictures!
>
>
> David,
>
> Thanks for posting the photos. I
recall you saying something about the
> plastic cups as far as
directionality, but I don't recall exactly what
> it was. Assuming the
plastic cups are not effective at producing
> directionality, what do
you hope to come up with in terms of testing
> data? Assuming you found
a material that did effectively provide
> directionality, would it be
more advantageous to have one element that
> could be rotated, rather
than 18 elements that are switched
> mechanically? Also, since part of
the reason for having one of these is
> for surface collision
avoidance, it would seem that a 20 degree cone
> would be a bit narrow
when surfacing and a unit pointing upwards will be
> required.
>
> Jon
>
>
>
> David Bartsch wrote:
>
> To all:
> >
> > I have posted five 18 hydrophone
passive sonar array pictures for
> > you to view.
> >
> > These have been placed under "resources and references" then
under
> > "projects and photos" then select "David Bartsch" and
finally "passive
> > sonar".
> >
> > It is a work
in progress and I have much work to do prior to its
> >
completion.
> >
> > Enjoy them and please share with us
your thoughts and ideas. (keep
> > this open forum to assist in
generating further discussions and
> > comments please)
> >
> >
> > David Bartsch
> >
> >
------------------------------------------------------------------------
>
> Windows Live™: Keep your life in sync. Check it out.
> >
<http://windowslive.com/explore?ocid=TXT_TAGLM_WL_BR_life_in_synch_062009>
>
>
>
>
>
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