<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div>Hank - some more Pisces info showing sphere hatch - not detailed but maybe of interest<div>Cheers</div><div>Keith Gordon</div><div><br></div><div><img height="480" width="640" apple-width="yes" apple-height="yes" id="9ca2dd7d-d5a5-44a7-83d2-5197fd73a8bb" src="cid:6116E6E3-3837-4287-AE63-939BFB53E054@telecom"><img height="480" width="640" apple-width="yes" apple-height="yes" id="5366c13d-9a5b-454b-8eda-f95d7e8800e3" src="cid:40FD0F8E-24B6-4C4E-80A4-96A1DC86215A@telecom"><img height="480" width="640" apple-width="yes" apple-height="yes" id="f8588d96-c2a8-4d04-b3cc-f6ddb47581b7" src="cid:DC126015-1D8D-4321-BBFC-C335193B848E@telecom"></div><div><br></div><div><br></div><div><br></div><div><div><div>On 9/11/2015, at 5:17 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12px; "><div><span>Sean,</span></div><div id="yui_3_16_0_1_1446999104063_4823"><span>By all means, anyone is welcome to any drawings I obtain or map from the Pisces. I </span>actually already have material price to machine the hatch from a solid disk of 516-70N this way it is one piece with no welds. I just need the drawing first to order the disk.</div><div id="yui_3_16_0_1_1446999104063_4822">Hank</div> <br><div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <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"> <font size="2" face="Arial"> On Sunday, November 8, 2015 8:52 AM, Sean T. Stevenson via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br> </font> </div> <br><br> <div class="y_msg_container">I'd be interested in having a look at those drawings. The idea with a<br clear="none">conical bearing face on a hatch, if you are not trying to establish a<br clear="none">metal-to-metal seal, is to provide a load path through the hatch itself<br clear="none">to carry the shell stress that would otherwise require heavy<br clear="none">reinforcement around the hole. Thus, the "ideal" hatch would be the<br clear="none">same thickness and curvature as the shell it is replacing, aligned to it<br clear="none">so the load transfers straight through, with a flange on both the hatch<br clear="none">and shell parts to create a substantial bearing face. The conical angle<br clear="none">in that case would be set by the hatch diameter, as the ideal interface<br clear="none">angle would be perpendicular to the shell at every point. I suspect<br clear="none">that in practice, the cone is exaggerated beyond that, because we're<br clear="none">talking about very small angles on larger spheres - on a PSub, perhaps<br clear="none">it is more important. The other advantage is of course the self-centering.<br clear="none"><br clear="none">Sean<br clear="none"><br clear="none"><div class="yqt0789871204" id="yqtfd68594"><br clear="none">On 2015-11-07 16:26, hank pronk via Personal_Submersibles wrote:<br clear="none">> Dr Nuytten thinks he has detail drawings that he is willing to share<br clear="none">> with me, if he can not find them, he has given me permission to measure<br clear="none">> one of his Pisces in the bone yard. I may have a look for myself even<br clear="none">> with drawings, just because I am a visual guy- if I see it I can make<br clear="none">> it. Besides, how fun is a day at the Nuytco bone yard :-)<br clear="none">> Hank <br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br></blockquote></div><br></div></body></html>