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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>FEA is one of the few
things I leave to sombody else. The accurate programs are expensive and need a
supercomputer..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Emile<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Van:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b><span
style='font-weight:bold'>Namens </span></b>Alan James via Personal_Submersibles<br>
<b><span style='font-weight:bold'>Verzonden:</span></b> dinsdag 24 februari
2015 0:49<br>
<b><span style='font-weight:bold'>Aan:</span></b> Personal Submersibles General
Discussion<br>
<b><span style='font-weight:bold'>Onderwerp:</span></b> Re: [PSUBS-MAILIST]
many questions from a rookie</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div id="yui_3_16_0_1_1424733706946_6922">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>Hi
Havard,<o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_6921">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>a
couple of years ago I looked at ZW cad & it was economical but didn't have
an FEA option.</span><o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>It
might have changed since.<o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_6997">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>You
could export the file to another program (can't remember it's name) but this
program was</span><o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>very
expensive.<o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7077">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>I
bought Rhino 5 & two plug ins, "Orca" (marine design) & scan
& solve, which is a basic FEA</span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7197">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>program.
I am doubtful of the accuracy of scan & solve as I questioned one of their
experts</span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7198">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>&
he was very evasive on how accurate the program was. It is generally thought
best to leave </span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7215">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>FEA
up to the experts.</span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7280">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>Emile
touched on your question about pressure build up. Oxygen is fed in at the same
rate as</span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7281">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>you
consume it & is breathed out in identical volume as CO2. The CO2 is removed
in the CO2</span><o:p></o:p></span></font></p>
</div>
<span id="yui_3_16_0_1_1424733706946_7308">
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>scrubber.</span><o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>Alan<o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6916">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
<div id="yui_3_16_0_1_1424733706946_6919">
<div id="yui_3_16_0_1_1424733706946_6918">
<div id="yui_3_16_0_1_1424733706946_6917">
<div class=MsoNormal align=center style='text-align:center;background:white'><font
size=3 color=black face=Helvetica><span style='font-size:12.0pt;font-family:
Helvetica;color:black'>
<hr size=1 width="100%" align=center id="yui_3_16_0_1_1424733706946_6939">
</span></font></div>
<p class=MsoNormal style='background:white'><b><font size=2 color=black
face=Arial id="yui_3_16_0_1_1424733706946_6920"><span style='font-size:10.0pt;
font-family:Arial;color:black;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'> Håvard Hardy via Personal_Submersibles
<personal_submersibles@psubs.org><br>
<b id="yui_3_16_0_1_1424733706946_7333"><span
id="yui_3_16_0_1_1424733706946_7332"><span style='font-weight:bold'>To:</span></span></b>
Personal Submersibles General Discussion
<Personal_Submersibles@psubs.org> <br>
<b id="yui_3_16_0_1_1424733706946_7335"><span
id="yui_3_16_0_1_1424733706946_7334"><span style='font-weight:bold'>Sent:</span></span></b>
Tuesday, February 24, 2015 9:18 AM<br>
<b id="yui_3_16_0_1_1424733706946_7337"><span
id="yui_3_16_0_1_1424733706946_7336"><span style='font-weight:bold'>Subject:</span></span></b>
[PSUBS-MAILIST] many questions from a rookie</span></font><font color=black
face=Helvetica><span style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6953">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
<div id=yiv1986129548>
<div id="yui_3_16_0_1_1424733706946_6986">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>i
allways wantet to build a sub, but still got allot of research to do..
there is a few things i could not find the </span></font><font size=2
color=black face=Helvetica><span style='font-size:10.0pt;font-family:Helvetica;
color:black'>answer in the internet, so have to ask here.</span></font><font
color=black face=Helvetica><span style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
<div id="yui_3_16_0_1_1424733706946_6996">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6994">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>i
was thinking of building a small 1 man sub. i used the psub <a
href="http://www.psubs.org/design/unstiffcyl" target="_blank"
id="yui_3_16_0_1_1424733706946_6995"><font size=1 face=Arial><span
style='font-size:9.0pt;font-family:Arial'>Unstiffened Cylinder Calculator</span></font></a> to
check how thick the hull hadd to be, to get to <st1:metricconverter
ProductID="200 meters" w:st="on">200 meters</st1:metricconverter>, the hull
have to be over 15mm thick.. so thought maybe i should use ribbs to get it
thinner, but dont know how to calculate whit ribs, and how to find out how many
ribs i need, and spacing betwen them.<o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6993">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6992">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>a
few other tecnical things i dont know.<o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6991">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6990">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>How
to you keep the pressure not to rise in the pressure hull? you need oxygen, so
the pressure will rise?..<o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6989">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6988">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>and
how do you get the propeler shaft thru the hull, and not get water in the sub.
easy on a boat where the pressure is not so big, but att <st1:metricconverter
ProductID="500 feet" w:st="on">500 feet</st1:metricconverter>?<o:p></o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6987">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div id="yui_3_16_0_1_1424733706946_6985">
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'>does
somone sell the </span></font><font size=1 color=black face=Arial><span
style='font-size:8.0pt;font-family:Arial;color:black;letter-spacing:.75pt'><span
id="yui_3_16_0_1_1424733706946_6984">through hulls to get wires thru the
pressure hull? or do i have to make on my own?</span></span></font><font
color=black face=Helvetica><span style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><font size=1 color=black
face=Arial><span style='font-size:8.0pt;font-family:Arial;color:black;
letter-spacing:.75pt'>if the pressure hull have a operation deapth off <st1:metricconverter
ProductID="500 feet" w:st="on">500 feet</st1:metricconverter>, how do i find
out how thick the </span></font><b><font size=1 color=black
face=Helvetica><span style='font-size:8.0pt;font-family:Helvetica;color:black;
letter-spacing:.75pt;font-weight:bold'>Viewports have to be..</span></font></b><font
color=black face=Helvetica><span style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><b><font size=1 color=black
face=Helvetica><span style='font-size:8.0pt;font-family:Helvetica;color:black;
letter-spacing:.75pt;font-weight:bold'>and does anyone no of a good drawing
program to draw the sub? have only made it on paper.. need to make on the
computer and get a FEA.</span></font></b><font color=black face=Helvetica><span
style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><b><font size=1 color=black
face=Helvetica><span style='font-size:8.0pt;font-family:Helvetica;color:black;
letter-spacing:.75pt;font-weight:bold'>probably have many other things coming
:)</span></font></b><font color=black face=Helvetica><span style='font-family:
Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><font size=3 color=black
face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='background:white'><b><font size=1 color=black
face=Helvetica><span style='font-size:8.0pt;font-family:Helvetica;color:black;
letter-spacing:.75pt;font-weight:bold'>Håvard.</span></font></b><font
color=black face=Helvetica><span style='font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt;background:white'><font size=3
color=black face=Helvetica><span style='font-size:12.0pt;font-family:Helvetica;
color:black'><br>
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