Re: Fwd: Auto-discard notification

> ---------- 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
>> --------------------------------------------------------
>>
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>
> 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.
>
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