RE: [PSUBS-MAILIST] Reverse engineering

["Eliezer Rodriguez" <eliezer_rodriguez@hotmail.com>]

Oops I forgot that detail. Yes, please send it to eliezer_rodriguez@hp.com

Regards,

Eliezer Rodriguez
"The only thing in life to fear is fear itself."



>From: Alec Smyth <Asmyth@changepoint.com>
>Reply-To: personal_submersibles@psubs.org
>To: "'personal_submersibles@psubs.org'" <personal_submersibles@psubs.org>
>Subject: RE: [PSUBS-MAILIST] Reverse engineering
>Date: Tue, 4 Dec 2001 11:22:39 -0500
>
>Eliezer,
>
>I tried, but the email bounced. I notice you have a hotmail address, and 
>the
>attachment is 1.7MB, so maybe it exceeds what Hotmail allows. D'you have
>another email I can send this to?
>
>- Alec
>
>-----Original Message-----
>From: Eliezer Rodriguez [mailto:eliezer_rodriguez@hotmail.com]
>Sent: Tuesday, December 04, 2001 11:10 AM
>To: personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] Reverse engineering
>
>
>Alec;
>
>Could you also send me copy of these formulas?
>
>Eliezer Rodriguez
>"The only thing in life to fear is fear itself."
>
>
>
> >From: Alec Smyth <Asmyth@Changepoint.com>
> >Reply-To: personal_submersibles@psubs.org
> >To: "'personal_submersibles@psubs.org'" <personal_submersibles@psubs.org>
> >Subject: RE: [PSUBS-MAILIST] Reverse engineering
> >Date: Tue, 4 Dec 2001 10:32:01 -0500
> >
> >Uh-Oh, this is the famous plastic coke bottle question again. Take one of
> >those and fill it with compressed air, and you will find it withstands
> >hundreds of psi. But take it underwater with you on a scuba dive 
>(external
> >pressure) and it will collapse before you know it. External pressure
> >resistance is NOT calculated from internal pressure resistance. They are
> >two
> >entirely different things.
> >
> >I'm afraid the "formula" for external pressure is actually a number of
> >pages
> >worth, because it depends on lots of variables like diameters, length,
> >material, etc., etc. You can readily calculate the depth rating of
> >cylinders
> >and speres, but anything else is hard. I'll send you scans of all the
> >formulas off list, and the spreadsheet on PSUBS automates the same
> >calculations.
> >
> >"Reverse engineering" is something quite different. That refers to taking
> >something apart and creating the design from the finished product, rather
> >than building a product from a design. When I was an engineering student 
>in
> >Argentina, one of my colleagues worked at a tank factory. His assignment
> >was
> >to take the fire control circuitry from a Leopard II tank (purchased from
> >Germany) and figure out the design so replicas could be built without
> >paying
> >the royalties.
> >
> >cheers,
> >
> >- Alec
> >
> >-----Original Message-----
> >From: Floridarobots@aol.com [mailto:Floridarobots@aol.com]
> >Sent: Tuesday, December 04, 2001 8:29 AM
> >To: personal_submersibles@psubs.org
> >Subject: Re: [PSUBS-MAILIST] Reverse engineering
> >
> >
> >
> >
> >Question.....  What is the formula to calculate reverse engineering on a
> >pressure hull ?
> >
> >If a Co2 tank is rated for say 1000 PSI of outward pressure from the
> >inside,
> >what would it be rated for  as far as pressure from the outside ? Sorry 
>if
> >this sounds like a dumb question, Im not sure if there is a calculation 
>for
> >this....
> >Tom
> >
>
>
>_________________________________________________________________
>Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp


_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp