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Re: [PSUBS-MAILIST] Hydrophone systems

To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Hydrophone systems
From: irox <irox@ix.netcom.com>
Date: Thu, 10 May 2007 15:45:34 -0700 (GMT-07:00)
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Reply-to: personal_submersibles@psubs.org
Sender: owner-personal_submersibles@psubs.org
Hi Joseph,

yeah, I think I posted this before.  I think it's a great project, but
so far have never managed to have the resouces to play with it.  It is
infact open source, rather than shareware, so fixing bugs would be
possible, but would require the know-how.  Although development seems
to have stopped in 2004.

And I agree with your statements, the basic sub is very reliable and
can be operating easily at a bog basic level.  With lots of goodies
and toys to enhance the experience of operation as well as the fun
of tuning, modified and enhancing.  But without becoming totally
dependant on technology that may fail.

Alvin Jr. is an interesting sub to me.  I think we've both independantly
came up with very similar sub design - which isn't too much of a suprise,
since my design was a logical progression from a massive live board
sub to some more realistic once I learn more about subs and the issues
with them.

Cheers,
  Ian.

-----Original Message-----
>From: Joseph Perkel <joeperkel@hotmail.com>
>Sent: May 10, 2007 3:22 PM
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Hydrophone systems
>
>
>
>Hi Ian,
>
>You see now here is what I'm talking about fun! I think I may have seen this before, perhaps you may have posted it previously, it appears to be shareware but, if there would be bugs in the software,... it would be beyond my capability to deal with it.
>
>Still....While employing such systems may seem on the "surface",.... to be overly complex, I believe we can design our subs core systems to be as simple and bullet proof as possible, while leaving room for the fun stuff like this software running on a bullet proof laptop. If it breaks down, oh well.
>
>If Alvin Jr. is indeed in my future, it's always been my intention to include all manner of goodies apart from the subs basic systems...why not! In this case, I would use a fixed omni directional hydrophone for recording sea life sounds, as Alvin Jr is designed to be accompanied by, and in contact with a surface support vessel. But, Alvin Jr. would in fact have a "science rack" installed along with a manipulator and tiny ROV ala (video ray).
>
>Do I need all this stuff?....heck no! But it is what Peter is talking about the "Spirit" within vessels. With all this Alvin Jr. is indeed ..."Alive", without it, well...you might as well fill it with propane!
>
>Nice link Ian, thanks..I will save this!
>
>Joe
>
>
> 
>
>From:  irox <irox@ix.netcom.com>
>Reply-To:  personal_submersibles@psubs.org
>To:  personal_submersibles@psubs.org
>Subject:  Re: [PSUBS-MAILIST] Hydrophone systems
>Date:  Thu, 10 May 2007 17:18:22 -0400 (EDT)
>>
>>One day, when I have time (hahahaha) and submarine (oh please let me
>>have submarine one day), I will play with this project:
>>   http://hasas.sourceforge.net/overview.html
>>
>>Maybe my submarine will need an IT officer for running server farm
>>to process signals. ;)  If it was a quiet glider sub, this could work
>>very well.
>>
>>Cheers,
>>   Ian.
>>
>>-----Original Message-----
>> >From: Joseph Perkel <joeperkel@hotmail.com>
>> >Sent: May 10, 2007 2:44 PM
>> >To: personal_submersibles@psubs.org
>> >Subject: [PSUBS-MAILIST] Hydrophone systems
>> >
>> >
>> >Peter and others,
>> >
>> >When I was considering a war-boat replica, I had gone as far a acquiring plans for a homemade directional hydrophone. http://www.digitalmarketingusa.com/hydrophone.html
>> >
>> >There are a number of commercial, albeit expensive units that are off the shelf such as http://www.sonotronics.com/html/products/receivers/mantrak.html
>> >
>> >The idea being that one could mount such a device atop a short shaft through a simple rotating thru hull. One could have a fixed compass rose on the inside with the bow of course aligned
>> >@ 360 deg, in order for the operator to determine and call out bearings.
>> >
>> >When I was diving, I was fairly certain within.... I would guess a 90 deg swath of the direction of props to try to keep myself from being blended. This is with human ears so I am quite sure these units will get that down to the degree.
>> >
>> >If you really want to get fancy, there are software programs available that will determine range based upon density and sound wave propagation. This could be run on a Panasonic "Toughbook".
>> >
>> >Joe
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>
>************************************************************************************************************************************************************************************************************************The personal submersibles mailing list complies with the US FederalCAN-SPAM Act of 2003.  Your email address appears in our databasebecause either you, or someone you know, requested you receive messagesfrom our organization.If you want to be removed from this mailing list simply click on thelink below or send a blank email message to:	removeme-personal_submersibles@psubs.orgRemoval of your email address from this mailing list occurs by anautomated process and should be complete within five minutes ofour server receiving your request.PSUBS.ORGPO Box 53Weare, NH  03281603-529-1100************************************************************************************************************************************************************************************************************************





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