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Re: [PSUBS-MAILIST] Software

I have am actually getting a certificate on making all types of spreadsheets and other office programs. 
I just need formulas and time.
John

You must have enrolled really quickly John because
6 hours ago you said......What spreadsheets?
john
Regards Alan
----- Original Message ----- From: "Firebolt" <spartan67@live.com> 
To: <personal_submersibles@psubs.org>
Sent: Friday, October 22, 2010 4:05 PM
Subject: Re: [PSUBS-MAILIST] Software
I have am actually getting a certificate on making all types of spreadsheets and other office programs. 
I just need formulas and time.
John

--------------------------------------------------
From: "irox" <irox@ix.netcom.com>
Sent: Thursday, October 21, 2010 8:24 PM
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] Software
This is probably much more useful than just been given some random spreadsheet: 
http://microship.com/resources/cg-weight-study.html
If you don't know how to make spreadsheets, I am sure you can find tutorials online (openoffice.org is a free office suite if you don't have a spreadsheet 
package).

Ian.

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

From: irox <irox@ix.netcom.com>
Sent: Oct 21, 2010 4:19 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Software


Actually, what might be a good idea is to put together
some templates for various aspects of design and maybe
Jon could put them on the psubs website, also other more
experienced folks could peer review and help improve them.
I probably won't get a chance to do this until the weekend.

Cheers,
 Ian.

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

From: Firebolt <spartan67@live.com>
Sent: Oct 21, 2010 3:54 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Software
Do you think you can lend me one? I know it is cheating, I will read books 
in fact I am going to buy the Cambridge book about submarine design.

Thanks

John

--------------------------------------------------
From: "irox" <irox@ix.netcom.com>
Sent: Thursday, October 21, 2010 5:10 PM
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] Software



I use openoffice for the ABS hull calcs and other more complex
spreadsheets.  Otherwise I tend to use docs.google.com.

If you are asking "what is in my spreadsheets", well, pretty much
every quantifiable parameter of the submarine.  I have spreadsheets
for hull designs (comparing the weights and volumes of different
designs), spreadsheets for batteries specs (listing many types of
batteries, cost per 1Ah, no. of batteries for $10K, weight, etc...),
weights and balances spreadsheet, totaling and the weights (with
there x,y,z location so moments can be calculated) and volumes so
I can tell if the sub floats the right way up.

A great start would be a Naval Architecture text book (I use one
from the 50s) which should explain the weights and balances
calcs, which is a great place to start.

With spreadsheets and I quick determine if making a ballast tank
larger or smaller will have the desired effect I am after, or
if releasing the drop weight will it cause the vessel to be unstable
when it hits the surface, what happens if an MBT suddenly
floods, will the VBT keep the hatch above water?

Spreadsheets using simple Newtonian physics (no drag, etc..) to
get quick estimates of how quickly the sub can turn using different
bow/stern thrusters.

When you are reading a book and come across a bunch of formulas,
stick them in a spreadsheet and see how different parameters
will effect your sub.

Spreadsheet can be very powerful design aids.

Cheers,
Ian.

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

From: Firebolt <spartan67@live.com>
Sent: Oct 21, 2010 2:52 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Software

What spreadsheets?

john

--------------------------------------------------
From: "irox" <irox@ix.netcom.com>
Sent: Thursday, October 21, 2010 4:46 PM
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] Software



Spreadsheets are probably the main design tool I use.
I use CAD as well, but mainly if I am calculating the
volume of a strange shape or something.

Ian.

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

From: Firebolt

Sent: Oct 21, 2010 5:25 AM

To: Psusbs

Subject: [PSUBS-MAILIST] Software








What is the software that is being used to design a
sub?


thanks


john



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