[PSUBS-MAILIST] K3000 spherical shell calculations

[Personal Submersibles General Discussion]

Something to remember with the Excel Spreadsheet ABS Calculator, you 
need to "enable macros" for it to work correctly.  When you open the 
document you should have the option to "Enable Macros" somewhere within 
the MS Excel tool bar (sometimes a pop-up box). If you don't enable 
macros the calculator won't work correctly. It really is beneficial to 
play with it and learn how to manipulate the figures.  If at first you 
don't succeed, just keep trying and ask for specific help, i.e. I put 
the number 16 in box D32 and nothing happened.

Jon


On 4/16/2014 1:25 AM, Personal Submersibles General Discussion wrote:
> Hello everybody ,anybody, Les here ,
> Attatched myself to this email for convenience (similar subject) been 
> away from psubs for quite some time wanting to start again.
> Now it might sound dumb, but I tried to follow the calc sheet for 
> material and depth etc with ring stiffeners but ufortunately had a few 
> problems, perhaps a sample calc attached to it would assist me and 
> maybe others on how to use it correctly?
> In between time I do need to get a rough indication of the thickness 
> of steel  and  approx size of  ring stiffener size and quantity, to 
> roughly calculate the weight of what I wish to build, to see if what I 
> want to do is feasible or not...WEIGHT IS CRITICAL for my project
> Can anyone help me please my reqirements are;
> A Sphere 2 meters diameter
> A Cylinder attached to that 1.2m diameter x 4meters long
>  ( I understand there will be a flaring attatchment to the sphere, 
> however at this point for the exercise, just to calc the min weight 
> that would be possible on these two items would be an indicator for me 
> andd give me a mental appreciation of my limitations )
> The desired depth is 300m, ( 984ft ) ( 452 psi ) or I could settle for 
> 250 meters( 820ft ) ( 379 psi ) both maximum dive depth not crush depth.
> Sorry to be  pain but can any-one help me
> Thank you
> Les
> P.S. In for a penny in for a pound, guess I will make myself look 
> completely dumb ....just as an indication, with something like the 
> above how would I calculate the
>         volume hence the size required for soft tanks for maximum 
> submergance
>

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