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by Andreas G
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---------- Forwarded message ----------
From: dude6935 <jake6935@...>
To: the-list@...
Date: Tue, 2 Jun 2009 18:23:32 -0700 (PDT)
Subject: Re: [Airshipworld List] Designing Airships - bringing our
collective knowledge together
Andreas G wrote:
>
> Do we need an Airship Development Software tool that helps us design
> airships in a computer aided design approach to have an integrated
> development environment. The question is not who will build it but who
> can see themself using it. And who would be willing to give the input
> in technical and business expertise regarding mathematical formulars,
> requirements aso.
>
> I would love to start such a project and spearhead the Software
> Development since I am a Computer Scientist but i would like to know
> if you see a need for it and if you would be willing to contribute.
> The Development model should be collaborative and the software or the
> resources and artifacts produced should be available for free as
> opensource so that everyone can use them enhance them and modify them.
> Let me know what you think I could envision specialized versions for
> designing remote controlled airships and passenger airships.
>
> Regards
>
> Andreas G
> --
> Editor of Airshipworld
> --------------------------------------------------------
> Visit the Airshipworld Blog at
> http://airshipworld.blogspot.com
> --------------------------------------------------------
>
> _______________________________________________
> The-List mailing list
> The-List@...
> http://airshipworld.info/mailman/listinfo/the-list_airshipworld.info
>
>
I am interested in collaborating. I just setup a forum on
smallblimps.lefora.com a few days ago for that purpose before I knew of this
forum and thread. I can offer a lot of formulas I have come across in the
process of codifying my blimps designs. For example you can get a good
estimate of your volumetric drag coefficient based on fineness. Needed
information is fineness(or length/width), the reciprocal of fineness
(width/length), and Reynolds number based on length.
=((0.172*(l/d)^(1/3))+(0.252*(d/l)^(-1.2))+(1.032*(d/l)^(-2.7)))/(Re^(1/6))
or on my excel file it is
=((0.172*(B32)^(1/3))+(0.252*(B34)^(-1.2))+(1.032*(B34)^(-2.7)))/(K41^(1/6))
It should come out to about .002 depending on fineness.
My excel file might be a good starting point if it were organized for
someone else to easily use.
--
View this message in context:
http://www.nabble.com/Designing-Airships---bringing-our-collective-knowledge-together-tp18236111p23843885.html
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From: dude6935 <jake6935@...>
To: the-list@...
Date: Tue, 2 Jun 2009 18:23:32 -0700 (PDT)
Subject: Re: [Airshipworld List] Designing Airships - bringing our
collective knowledge together
Andreas G wrote:
>
> Do we need an Airship Development Software tool that helps us design
> airships in a computer aided design approach to have an integrated
> development environment. The question is not who will build it but who
> can see themself using it. And who would be willing to give the input
> in technical and business expertise regarding mathematical formulars,
> requirements aso.
>
> I would love to start such a project and spearhead the Software
> Development since I am a Computer Scientist but i would like to know
> if you see a need for it and if you would be willing to contribute.
> The Development model should be collaborative and the software or the
> resources and artifacts produced should be available for free as
> opensource so that everyone can use them enhance them and modify them.
> Let me know what you think I could envision specialized versions for
> designing remote controlled airships and passenger airships.
>
> Regards
>
> Andreas G
> --
> Editor of Airshipworld
> --------------------------------------------------------
> Visit the Airshipworld Blog at
> http://airshipworld.blogspot.com
> --------------------------------------------------------
>
> _______________________________________________
> The-List mailing list
> The-List@...
> http://airshipworld.info/mailman/listinfo/the-list_airshipworld.info
>
>
I am interested in collaborating. I just setup a forum on
smallblimps.lefora.com a few days ago for that purpose before I knew of this
forum and thread. I can offer a lot of formulas I have come across in the
process of codifying my blimps designs. For example you can get a good
estimate of your volumetric drag coefficient based on fineness. Needed
information is fineness(or length/width), the reciprocal of fineness
(width/length), and Reynolds number based on length.
=((0.172*(l/d)^(1/3))+(0.252*(d/l)^(-1.2))+(1.032*(d/l)^(-2.7)))/(Re^(1/6))
or on my excel file it is
=((0.172*(B32)^(1/3))+(0.252*(B34)^(-1.2))+(1.032*(B34)^(-2.7)))/(K41^(1/6))
It should come out to about .002 depending on fineness.
My excel file might be a good starting point if it were organized for
someone else to easily use.
--
View this message in context:
http://www.nabble.com/Designing-Airships---bringing-our-collective-knowledge-together-tp18236111p23843885.html
Sent from the The Airshipworld Mailinglist mailing list archive at Nabble.com.
_______________________________________________
The-List mailing list
The-List@...
http://airshipworld.info/mailman/listinfo/the-list_airshipworld.info
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