<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Which viewport?<br><br>Sent from my iPhone</div><div><br>On Nov 2, 2014, at 2:30 PM, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div><span></span></div><div></div><div>On this calc, the operating depth is 350 ft and the crush depth of the viewport is 2130 ft.<br><br><br><br></div><div>Cliff</div><div><br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <div class="hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); border-image: none; height: 0px; line-height: 0; font-size: 0px;" contenteditable="false" readonly="true"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Vance Bradley via Personal_Submersibles
<<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, November 2, 2014 8:27 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] bow window<br> </font> </div> <div class="y_msg_container"><br><div id="yiv0431126773"><div><div>Operating 350 feet. Test depth 500.<br clear="none"><br clear="none">Sent from my iPhone</div><div class="qtdSeparateBR"><br><br></div><div class="yiv0431126773yqt7018538359" id="yiv0431126773yqt04502"><div><br clear="none">On Nov 2, 2014, at 2:19 PM, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span></span></div><div></div><div>Is the design depth 350"?</div><div><br clear="none">Cliff</div><div><br clear="none"></div><div><br clear="none"></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <div class="yiv0431126773hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); border-image: none; height: 0px; line-height: 0; font-size: 0px;"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Vance Bradley via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight: bold;">To:</span></b>
Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, November 2, 2014 8:06 PM<br clear="none"> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] bow window<br clear="none"> </font> </div> <div class="yiv0431126773y_msg_container"><br clear="none"><div id="yiv0431126773"><div><div>Cliff, I'm thinking full hull diameter, 36" or thereabouts.</div><div>Vance<br clear="none"><br clear="none">Sent from my iPhone</div><div class="yiv0431126773qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv0431126773yqt7765864448" id="yiv0431126773yqt21105"><div><br clear="none">On Nov 2, 2014, at 2:02 PM, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span></span></div><div></div><div>One of my goals with the R500 was to cut cost and a big cost is the viewports. The upper portion of the pressure hull that has the viewports is 36" x 0.25 A516-70 pressure vessel steel. The design depth is 500 ft. I like the optics of flat viewports so I have one 24" diameter x 4" thick acrylic viewport and three smaller 12" viewports. I ran the calcs using the PVHO flat viewport calculator that Jon Wallace implemented at the
PSubs site. I have access to abrasive water jet so I was thinking of jetting these out of off the shelf acrylic and then having a machine shop dress the edges and cut the chamfers. I would need to get the viewports annealed after final machining. I am hoping I can
talk Gregg Cotrell into doing this for me as he is Dr. Acrylic. PVHO has detailed info on what the viewport housing seat needs to look like.</div><div><br clear="none"></div><div>So to me, I don't see any reason Vance you could not use large flat viewport on the bow. You just have to do the PVHO calcs on the thickness and housing dimensions for your design depth. You would need to design the housing to smoothly transition the stresses to the forward head and run an FEA to confirm stresses in the viewport and housing. I don't know what size you were thinking about or the design depth but it would need be thick.</div><div><br clear="none"></div><div>Cliff<br clear="none"><br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <div class="yiv0431126773hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); border-image: none; height: 0px; line-height: 0; font-size: 0px;"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, November 2, 2014 7:02 PM<br clear="none"> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] bow window<br clear="none"> </font> </div> <div class="yiv0431126773y_msg_container"><br clear="none">Lets wait and see what the engineers think. Cliff is going with a flat port on the R500 I believe.<br clear="none">Hank<br clear="none">--------------------------------------------<br clear="none">On Sun, 11/2/14, via
Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] bow window<br clear="none"> To: <a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> Received: Sunday, November 2, 2014, 12:20 PM<br clear="none"> <br clear="none"> That's my<br clear="none"> kind of madness.<br clear="none"> Vance<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Original<br clear="none"> Message-----<br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles<br clear="none"> <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: Personal Submersibles General Discussion<br clear="none"> <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Sent: Sun, Nov 2, 2014 11:53 am<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] bow window<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Vance,<br clear="none"> That is a question for the engineers of coarse. I look at<br clear="none"> it like the hull is a <br clear="none"> big conning tower. Just look how
Gamma's CT is built,<br clear="none"> instead of a hatch it is <br clear="none"> a flat port. I know I may be over
simplifying it. The<br clear="none"> engineers are probably <br clear="none"> thinking I am mad but..... <br clear="none"> Hank<br clear="none"> --------------------------------------------<br clear="none"> On Sun, 11/2/14, via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] bow window<br clear="none"> To: <a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br clear="none"> Received: Sunday, November 2, 2014, 11:13 AM<br clear="none"> <br clear="none"> Hank,<br clear="none"> It's not crazy at all. I just hadn't<br clear="none"> thought of it. I wonder if the stresses
imposed at test<br clear="none"> depth would be too high for the 1/4" hull the thing<br clear="none"> would be welded to. It's an interesting thought,<br clear="none"> though.<br clear="none"> Something to consider, definitely.<br clear="none"> <br clear="none"> Vance<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Original<br clear="none"> Message-----<br clear="none"> <br clear="none"> From: hank pronk via Personal_Submersibles<br clear="none"> <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: personal_submersibles<br clear="none"> <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Sent: Sun, Nov 2, 2014 10:49 am<br clear="none"> <br clear="none"> Subject: [PSUBS-MAILIST] bow window<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Vance,<br clear="none"> Have you looked at a large full size flat port for the<br clear="none"> front<br clear="none"> of your K350. I <br clear="none"> did that with one of my early subs. I had a 24 inch flat<br clear="none"> port 4 inches thick <br clear="none"> with a 24 inch protection dome. The optics were stunning,<br clear="none"> nobody believed it <br clear="none"> was 4 inches thick. I checked with
Reynolds Polymer and a<br clear="none"> 7<br clear="none"> inch thick 37inch <br clear="none"> square unpolished piece is 3,000 dollars US. Is that just<br clear="none"> crazy talk or what. <br clear="none"> Hank<br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div class="yiv0431126773qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv0431126773yqt7355598883" id="yiv0431126773yqtfd67317"><br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></blockquote></div><blockquote type="cite"><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing
list</span><br clear="none"><span><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></blockquote></div></div><br clear="none"><div class="yiv0431126773yqt7765864448" id="yiv0431126773yqt59788">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></blockquote></div><blockquote type="cite"><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br clear="none"></div></blockquote></div></div><br><div class="yqt7018538359" id="yqt90099">_______________________________________________<br clear="none">Personal_Submersibles mailing
list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></body></html>