Re: [PSUBS-MAILIST] The sub

[MerlinSub@t-online.de]

Hi John, no problem to build a submarine

01) 25 kn fast 
02) 60 x 8 feet for 350 m dive depth
03) for 200.000 USD

Unfortune - you can not integrate the three figures in one submarine.. 

If you request the pressure hull at a boiler factory 60 x 8 for 350m  dive depth you will find out 
that you need about 1 inch strong high tensile steel with 140-15 frames, the cylinder the endcaps,
the entrance the hatch etc. And only that will allready eat complete 03) 

The formular to calculate the surface speed of a displacement vessel 2,43 x square root of the waterline length (m)
Say you design has the full length as waterline - than the top speed will be around 10 knots. 

So if you can go closer to this figures:

01) 10 kn fast 
02) 60 x 8 feet for 350 m dive depth
03) for 400.000 USD

you have a project. 

UC3 Nautilus is a 100 meter diver with a half inch mild steel hull etc.

vbr Carsten 

"Firebolt" <spartan67@live.com> schrieb:
> Yes I knew from the beginning that I will have to do days of research, I have been researching for about a year, and it will be close to the UC3 Nautilus (check on youtube). My budget will be 200,000 us dollars, I am already taking welding classes in case I need to weld.
> And have some books that I need to read also. This submarine will be solely for exploration and some research, I really don't think this is a large sub but compared to other psubbers it is. My new dimensions are 60ft length 8 feet od and in height 13 ft(conning tower). Also I am learning  programming so I can program some parts of the ship.
> 
> John 
> 
> 
> From: glen brown 
> Sent: Sunday, October 17, 2010 12:59 AM
> To: personal_submersibles@psubs.org 
> Subject: Re: [PSUBS-MAILIST] thickness & Ribs
> 
> 
> Hi John
> What are you planing to do with such a large sub ? When I first started I allso was allso in a hurry to get going but soon learned  with building a sub you go nowhere fast.You obviously have done a little research allready check out the psubs archive .To build a sub the size you want will cost a .....load of money and stacks of research.
> Glen
>   ----- Original Message ----- 
>   From: Yohnathan Aldana 
>   To: personal_submersibles@psubs.org 
>   Sent: Saturday, October 16, 2010 8:58 PM
>   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




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