john -------------------------------------------------- From: "Alan James" <alanjames@xtra.co.nz> Sent: Thursday, October 21, 2010 11:59 PM To: <personal_submersibles@psubs.org> 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. JohnYou 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] SoftwareI 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] SoftwareThis is probably much more useful than just been given some random spreadsheet:http://microship.com/resources/cg-weight-study.htmlIf 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 spreadsheetpackage). 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] SoftwareDo you think you can lend me one? I know it is cheating, I will read booksin 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] SoftwareI 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] SoftwareSpreadsheets 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 ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our databasebecause either you, or someone you know, requested you receive messagesfrom our organization.If you want to be removed from this mailing list simply click on thelink below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. 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