[PSUBS-MAILIST] Question re: Hull Stress Spread Sheet

[Ray Keefer <Ray.Keefer@ebay.sun.com>]

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From: "Greg L. Nolen" <wallenconst@jps.net>
To: <ray@psubs.org>
Subject: Question re: Hull Stress Spread Sheet
Date: Tue, 21 Mar 2000 12:50:03 -0800
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Mr. Keefer:

My name is Greg L. Nolen and I've injoyed your web-page very much.  I
downloaded the hull stress spread sheet from your "Tools" section.  I have
an engineering background, however, I do not understand what the author of
the spreadsheet is asking in the column labeled "n = circumferential lobes
for failure calculations".  What is a circumferential lobe and how do I
determine the number I need?  If you understand the question or know how to
contact the author, Alec Smyth, please respond.  Additionally, I also
downloaded the "Propking" spreadsheet, upon review I felt it was not
applicable to submarines unless the speed to length ratio was kept near 1.6
by exaggerating the hull length.  What are your thoughts on this if any? 


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