From: "Brian Cox" <ojaibees@ojai.net>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
Date: Thu, 6 May 2004 12:34:57 -0700
As far as speed and maximum range I'm afraid ESMAE will rule the high
seas !!
Brian
----- Original Message -----
From: "Pierre Poulin" <pipo305@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Thursday, May 06, 2004 11:50 AM
Subject: RE: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
> Marten,
>
> My sub will have a drop-weight of about 700-800 pounds. Total
displacement
> of my sub is 1200 pounds. The drop-weight could be used for 3
things... 1-
> to beat Solo in pure speed. 2- to kill anything that swim. 3- to sink
> anything that float.
>
> Seriously... The purpose of the drop weight is if I get entangle on
> something, I will have 800 pounds of lift to bring the something
with me to
> the surface. I want to keep eject as last resort.
>
> Pierre "March II" Poulin
>
>
>
> >From: "Marten Liebster" <mliebster@tbteam.com>
> >Reply-To: personal_submersibles@psubs.org
> >To: <personal_submersibles@psubs.org>
> >Subject: RE: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
> >Date: Thu, 6 May 2004 14:15:52 -0400
> >
> >Pierre,
> >
> >Thanks for the response.
> >
> >Technically I don't know, but they do have the same affect. The next
> >section
> >in the handbook, "Emergency Surfacing System", seems to refer to
this. I
> >probably will add a drop weight to my plan, just an extra safety
feature.
> >
> >My conceptual plan uses compressed air to blow the tanks. I have
extra
> >tanks
> >in the system for backup, as well as multiple lines into the tank for
> >redundant paths.
> >
> >I wasn't sure if anyone used electricity to fill/empty the tank.
At least
> >that's what the book eluded to. Perhaps a pump to speed the
filling and
> >emptying tanks. Or perhaps an electrically operated valve to allow
the
> >water
> >and/or air in.
> >
> >Marten
> >
> >-----Original Message-----
> >From: owner-personal_submersibles@psubs.org
> >[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Pierre
Poulin
> >Sent: Thursday, May 06, 2004 1:03 PM
> >To: personal_submersibles@psubs.org
> >Subject: RE: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
> >
> >Is drop-weight a method to deballast?
> >
> >It certainly don't require electricity!
> >
> >Pierre
> >
> > >
> > > >From: "Marten Liebster" <mliebster@tbteam.com>
> > > >Reply-To: personal_submersibles@psubs.org
> > > >To: <personal_submersibles@psubs.org>
> > > >Subject: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
> > > >Date: Thu, 6 May 2004 10:23:51 -0400
> > > >
> > > >Gentlemen and scholars,
> > > >
> > > >Quoting ABS handbook in section 3/17.1.1 (Normal Ballast System):
> > > >"Each manned unit is to be fitted with a ballast system
capable of
> > > >providing normal ascent and descent and necessary trim
adjustments.
> > > >Ballast tanks that are subjected to internal or external
pressure are
> > > >to comply with the requirements of Section 6. Two independent
means
> > > >of deballasting are to be provided; one is to be operable with no
> > > >electric power available."
> > > >
> > > >
> > > >In my initial designs I have only accommodated for 1 means of
> > > >deballasting, using valves and compressed air. I assume this
is the
> > > >way most psubs are set-up.
> > > >
> > > >How do you deballast?
> > > >
> > > >Do you have two independent means of doing this?
> > > >
> > > >Thanks for info
> > > >Marten "the ever-curious" Liebster
> > > >
> > > >PS Hopefully I'll start getting some respect - as I have
started to
> > > >read through the ABS book :-)
> > > >
> > > >
> > > >
> > > >
> > >
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