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Re: [PSUBS-MAILIST] ABS - 3/17.1.1 - Normal Ballast System
Brian,
What are the specs for your thrusters?
Maybe it's just the graphics [ or me ], but they seem kinda small
to be pulling that mass and hull configuration for speed?
Also, the position of the thrusters? Will the thruster wash flow over the
skinlayer of the hull or deflect/push outward?
' Just wondering.
--Steve
On Thu, 6 May 2004 12:34:57 -0700 "Brian Cox" <ojaibees@ojai.net> writes:
> 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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