RE: [PSUBS-MAILIST] Ballast volume moon Shaped

["Graham K" <cryogenicz@dsl-only.net>]

30" OD Cylinder hull, Yes 20" diameter clinder? Cut lengthwise so you have
to equal sized half cylinders? One for each side.

also, 12 ft long.

Thanks :)

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On Behalf Of Ray Keefer
Sent: Monday, June 17, 2002 9:14 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Ballast volume moon Shaped


Hi Graham,

Sounds simular to a previous design exercise I went throught.
Please clarify some points and I'll see if I can work it out.

> 30" center hull

Is the 30" diameter cylinder hull?

> 20" tall ballast cylinder cut lengthwise,

20" diameter clinder?
Cut lengthwise so you have to equal sized half cylinders? One for each
side.

>
> and then welded on
> the sides of the 30" center hull, how do I know the volume of the
> moon-shaped cylinder? What is the volume?
>
> I need to know this so I know if my sub will have enough ballast.
>
> Thanks for your help guys!
>
> Graham Kuberski
>

Regards,
Ray