Re: [PSUBS-MAILIST] Need formulas please

[Ray Keefer <Ray.Keefer@Sun.COM>]

Hi Marten,

Go to http://www.psubs.org/designguide/designguide.html. There are serveral spreadsheets already.

Regards,
Ray


Marten Liebster wrote:
> 
> As my emails have shown, I am in the process of understanding all that goes
> into designing into a PSUB. I always thought of it as: 1) Design it so that
> it's round. 2)Put on some ballast tanks 3)Fill them until you sink. 4)Blow
> them to rise.
> 
> I've received much insight the past few weeks as I started to take a serious
> look into it. This was achieved by posting here, reading archives and
> looking through psubs.org.
> 
> Someone posted that at 100' there's more than 6,000 psi on the hull. I, as a
> programmer not a engineer, would like to be able to calculate such things.
> The spreadsheet that allows you to enter variables to end up with a crush
> depth, is also great.
> 
> I would like to put together a website or application that would contain the
> many various pertinent formulas. Formulas such as being able to calculate
> the weight of the hull, how much air volume inside my pressure hull, how
> much water needs to be brought in to sink the sub, etc...
> 
> This would be publicly available to hopefully assist others. Perhaps even
> include the ability to save specific info about the user's sub to save time
> in the future. Including internal items that add weight and take away from
> the internal air volume.
> 
> So I would appreciate it if people could send formulas (with descriptions)
> and point me to the various places that contain such formulas. Also any laws
> (natural/scientific) that govern the operation of a sub would wonderful.
> 
> I want to be able, with some degree of confidence, determine what a safe
> operating depth a design would be capable. If I can help others to safely
> design their subs, it would be my way of giving back for all the help I've
> thus received.
> 
> Marten
> 
>