Re: [PSUBS-MAILIST] sample ballast system

Hi Rick,

"hydraulic actuated flapper valves spring loaded fail closed"

Hmm, I read that schematic wrong didn't I ?

If I recall, yours is a 1000' design so this kind of thing is a bit too much for me, I don't need that kind of rugged design...that looks pretty bullet proof.

Is there something I could use as a flood port that would open remotely on demand? In fact, my failsafe could be opposite of yours and remain open in case of failure would most likely be preferable for my application.

Thanks again

Joe

From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] sample ballast system
Date: Sun, 26 Feb 2006 12:08:55 -0800

Joe

    cv1 thru 3 are hydraulic actuated flapper valves spring loaded fail closed. all the needle valves v1 thru whatever are swagelok 1/2 stainless steel male /female 1/2 npt.sv1-sv2 are pilot operated solenoid valves due to the range of cracking pressure.

Rick m

----- Original Message -----

From: Joseph Perkel

To: personal_submersibles@psubs.org

Sent: Sunday, February 26, 2006 5:00 AM

Subject: RE: [PSUBS-MAILIST] sample ballast system

Rick,

If I am reading this schematic correctly, those are solenoid controlled flood ports and vents for the soft ballast system.

As you may know, I am contemplating an open bottom ambient design enclosed within the hull but, this gives me a headache with controlling a large free surface area when running on the surface. It may make sense for me to enclose these spaces albeit at the expense of more material to submerge but, the loss of the free surfaces would just have to make for better surfaced sea keeping.

I would like to ask you about what off the shelf components could I use to build solenoid controlled "flood ports" so that I could enclose my soft tanks and have them completely dry on the surface? That way my water ballast would not have any free surface. I would still use manually controlled and piped vents.

Nice schematic, you're an electrical guy aren't you?

Thanks

Joe

From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: [PSUBS-MAILIST] sample ballast system
Date: Sat, 25 Feb 2006 20:34:02 -0800

guys

    see the pic on my frapper for the ballast system for my design will include the bill of materials in the next couple of days.

http://www.frappr.com/?a=viewphoto&id=386116&pid=1440159

    Full redundant using a pressure comped hard ballast tank to save wieght,and split fore and aft soft tanks.

rick m

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