Re: [PSUBS-MAILIST] thickness & Ribs

["Alan James" <alanjames@xtra.co.nz>]

Hi Jon,

Those questions need detailed answers if you are going to build a submarine.

A good place to start is the free online book "Busbies Manned submersibles"

it has a section on pressure hulls & exostructures.

http://busby.psubs.org/

There is also a hull calculator available on the Psub site.

Regards Alan

----- Original Message -----

From: Yohnathan Aldana

To: personal_submersibles@psubs.org

Sent: Sunday, October 17, 2010 7:58 AM

Subject: [PSUBS-MAILIST] thickness & Ribs

Pretty simple question's

How thick does the hull have to be if my sub is 60 feet long and the main cylinder part is 40 feet with a diameter of 8 feet?

Also i would like to be able to dive 350m and crush depth to be 500m thats all, and would i need Ribs to support the inside of the sub?

Last, with this size what type of diesel engine would i need to go 25 knots on the surface and, an electric motor, how much kw or hp would i need to go 8 knots underwater?

The shape is literally a cylinder with half spheres on each end. I know these are a lot of questions but it is imperative I know them, all of them. 

And the abs excel sheet, does anyone know how to use it? It is very vague on the instructions. 

John