<div dir="ltr">Hello Carsten, <div><br></div><div>for the thickness, I read that the viewport should have been rated for 1300meters depth, so I think that the designer designed for a short term critical pressure of 5200m/52MPa, and perhaps thought it would be fine using a 1.3X margin to get to 4000m rather than the 4X margin we can find in Stachiw book and PVHO rules for low temperatures (to be checked but I believe it is 4x). </div><div><br></div><div>regards</div><div>Antoine</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 30, 2023 at 4:03 PM <a href="mailto:MerlinSub@t-online.de">MerlinSub@t-online.de</a> via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">I check out some pictures and based on a given length of 6500mm </span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">I come to the following rough figures: </span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Diameter hull 1600 mm</span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Diameter front porthole outside 700 mm</span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Diameter front porthole inside 466 mm </span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">(these diameters indicate that the porthole could be original designed as entrance..)</span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Now idear about the thickness of the acrylic </span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">- but will check out PHSME about standard flange angles tonight. </span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Carsten</span></p>
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<p style="margin:0px">-----Original-Nachricht-----</p>
<p style="margin:0px">Betreff: Re: [PSUBS-MAILIST] Titan submersible missing at Titanic site</p>
<p style="margin:0px">Datum: 2023-06-30T15:31:14+0200</p>
<p style="margin:0px">Von: "<a href="mailto:MerlinSub@t-online.de" target="_blank">MerlinSub@t-online.de</a> via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></p>
<p style="margin:0px">An: "Personal Submersibles General Discussion" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">For me it looks like the biggest diameter porthole used in that deep. </span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Has somebody here inner and outer diameter and the thickness?</span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Carsten</span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none"> </span></p>
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<p style="margin:0px">-----Original-Nachricht-----</p>
<p style="margin:0px">Betreff: Re: [PSUBS-MAILIST] Titan submersible missing at Titanic site</p>
<p style="margin:0px">Datum: 2023-06-29T21:11:55+0200</p>
<p style="margin:0px">Von: "Jon Wallace via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></p>
<p style="margin:0px">An: "Personal Submersibles General Discussion" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></p>
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<div dir="ltr">The pictures of Titan that I see in water show 16 bolts holding the retaining ring in place. See attached photo.</div>
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<div dir="ltr">Jon</div>
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<div>On Thursday, June 29, 2023 at 11:49:18 AM EDT, <a href="mailto:MerlinSub@t-online.de" target="_blank">MerlinSub@t-online.de</a> via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:</div>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">I have seen a video how they make the carbon cylinder and can imagine that the boat imploded in longitudinal direction. </span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Create a massive shock wave with push the window out (not in). As I saw in another video the window was hold by only 4 bolts outside. </span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">All titan parts in the video seems undamaged. </span></p>
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<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none">Carsten</span></p>
<p style="margin:0px"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0);text-decoration:none"> </span></p>
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