Re: [PSUBS-MAILIST] Equasion Query

["Pierre Poulin" <pipo305@hotmail.com>]

Hi there!

Welcome aboard.

1) one cubic inch of water weight: 0.0361 lbs X 12(one foot) X 99 feet = 
42.8868 psi.

2) one cubic inch or steel weight: 0.283 lbs. The bouyancy rule say that the 
sub need to weight the same as the weight of the water you are displacing 
(occupying). So you have to calculate the volume of your sub in square inch, 
multiply it by the weight of the water per inch (0.0361)and you have the 
weight your sub must have to be bouyent.

3) I don't have any idea, sorry!

Good luck!

Pierre Poulin




>From: JPalominonoire@aol.com
>Reply-To: personal_submersibles@psubs.org
>To: Personal_Submersibles@psubs.org
>Subject: [PSUBS-MAILIST] Equasion Query
>Date: Mon, 3 Feb 2003 22:55:11 EST
>
>okay so i think i'm a convert! i can foresee problems with the lil' lady 
>but
>it'll all work out. the pressing questions are as follows and maybe someone
>can direct me to a book or rattle off the equations off the top of their
>heads. they seems elementary enough, so bear with me if you can.
>
>1) pressure per square inch at 99 feet (3 atmospheres)?
>2) weight vs bouyancy (is that lbs per volume of air space at 1 
>atmoshere?)?
>3) drag vs surface area (i understand water has 10 times the friction as 
>air
>does, so it seems airstreaming in hull design is essential for fuel
>efficiency)
>
>well thanks for any help.
>
>jasper


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