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Re: [PSUBS-MAILIST] Through Hull stuff
Why not attach LED's to a view port you it would work like a TV remote max data rate could be up to 1 MB with common I R.
Andy J.
---- George Slaterpryce <gslaterp@hotmail.com> wrote:
On the point of through hull penetrations, as an aside, if you have purely
data-only cables you can make a dataport that goes through the hull without
penetrating it using read switches and electromagnets. I've tested a three
wire setup for sending binary data. two bits plus a pulser. It's not very
fast compared to using a straight hookup... think of it as binary morsecode
but it works.
You're input would look something like
Port 1 | Port 2 | Port 3
1 0 0
0 0 1
0 0 0
1 0 1
Every time port 3 changes you "Sample" the feed, so you would end up with
something like
10000010
Port 3 would be there solely to indicate when new data (and complete) data
is ready to be read. otherwise when you send the exact data back and forth
(as the two sends of 00) it might misread it as only a single send.
Incedently that whole thing would just produce the number 65 or the letter
A.
George Slaterpryce
----- Original Message -----
From: "Smyth, Alec" <Alec.Smyth@compuware.com>
To: <personal_submersibles@psubs.org>
Sent: Monday, April 10, 2006 1:11 PM
Subject: RE: [PSUBS-MAILIST] structural question
> Vance,
>
> Wouldn't the most elegant solution be to leave the cylindrical hull
> intact,
> but put your speed controllers on the outside? That way the heavy gauge
> cables don't need penetrators, and all you bring into the hull are the
> skinny control cables. I'm assuming the motivator here is to minimize
> penetrators?
>
> cheers,
>
> Alec
>
> _____
>
> From: owner-personal_submersibles@psubs.org on behalf of Dan H.
> Sent: Mon 4/10/2006 8:42 AM
> To: personal_submersibles@psubs.org
> Subject: Re: [PSUBS-MAILIST] structural question
>
>
> Vance,
>
> I'm not the guy to do the calculations but I'd bet you would need to
> reinforce the slot your taking out of the hull tube similar to the way you
> have to reinforce around a viewport. The forces in the hull tube would be
> trying to close your slot and would have to be carried across the opening
> with something substantial. More then just the ribs in that area.
>
> Also, with the batteries in a box like that you would loose the protection
> in case of a battery explosion. The way it is now, the pod end cap will
> blow off but you won't flood or get hit. But, Maybe battery
> explosions
> aren't such a big problem as I was led to believe.
>
> Dan H,
>
> ----- Original Message -----
> From: vbra676539@aol.com <mailto:vbra676539@aol.com>
> To: personal_submersibles@psubs.org
> <mailto:personal_submersibles@psubs.org>
>
> Sent: Sunday, April 09, 2006 1:22 PM
> Subject: [PSUBS-MAILIST] structural question
>
> I'm planning on another K-sub, but thinking about a box keel like the
> Nektons and Delta had, rather than pods. Has anyone got an idea about how
> to
> figure structure on something like that? The Nekton's box was 9/16" wall,
> flat side and bottom, and reinforced with flat plates running athwartships
> on 18" centers (more or less). The hulls were the same thickness and the
> same material (A516 Grade 70).
>
> I'm wondering if there would be any penalty to building a 1/2" thick box
> with 1/4" dividers matched to the ring stiffeners in the hull (ie., 12"
> centers). The box would be a foot square in cross section, and if all
> seems
> well, would be welded through a slot in the hull and covered inside with a
> reinforced aluminum deck plate gasketed and vented for charging. If the
> pressure hull is six feet long in the cylinder, that would give me room
> for
> a grunch of 85 amp deep cycle batteries (more than called for) and still
> not
> kill my payload.
>
> Anyone not familiar with K-subs might think all this sounds pretty heavy.
> Have a look at the lead load in Dan's boat, if you think we don't have it
> to
> spare.
>
> Vance
>
>
>
>
> The contents of this e-mail are intended for the named addressee only. It
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