Vance that sounds similar to the way Phil attaches his
footwells. Nice design feature.
When you see an FEA of a thick hatch reinforcing just welded
into the shell it is the shell that shows the stress and that 3” x 1”
ring would spread and lessen that.
Regards, Hugh
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of vbra676539@aol.com
Sent: Wednesday, 21 April 2010 1:42 p.m.
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Hull Penetration and Reinforcement
Vance,
Send me the following info and I'll run it through the calculator.
1) design depth of PC-8
This is
the C model: 1000 fsw.
2) hull diameter (OD)
0.5"
(A516Gr70).
4) Is the 28 inch dimension ID or OD? I need the ID
dimension.
Let's
call it ID.
5) Does the unit extend into the cabin? If so, how far?
Yes, and
is milled to the hull radius minus about an inch. There is also a double
thickness collar welded into the hull, a ring section that is about 1" X
3". Most notable is that this reinforcement assembly is a flanged unit.
The conning tower is an independent structure, bolted to the hull.
Jon
vbra676539@aol.com wrote:
> It would be interesting to find out about the conning tower pens. My >
PC-8 print has a 28" pen, which allows for 8 X 8" viewports in the
> circumference. And I'm here to tell you, that's better than six.
> Vance
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