Re: The-List Digest, Vol 14, Issue 1

> Dear All,
>
> I am an academician who had developed a methodology to arrive at
> baselines specifications of a non-rigid airship given the operating
> requirements. This methodology has appeared as a Technical Note, in
> AIAA's Journal of Aircraft, Vol. 45, No. 6, Nov-Dec 2008. Soft copy of
> this article can be downloaded from the publications list on my
> website i.e., http://www.aero.iitb.ac.in/~rkpant.  The methodology is
> available with me as a code in FORTRAN.
>
> Similar methodologies for conceptual design of remotely controlled
> airships and aerostats are also available with us on MS-EXCEL
> spreadsheets.
>
> If anyone would like to collaborate with me in developing these
> methodologies further, please do contact me by e-mail.
>
> Rajkumar Pant
>
> On Fri, Jun 5, 2009 at 11:30 PM, <the-list-request@...>
> wrote:
>>
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>> Today's Topics:
>>
>>   1. Fwd: Auto-discard notification (Andreas Grunewald)
>>   2. Re: Fwd: Auto-discard notification (brunians@...)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Thu, 4 Jun 2009 23:16:41 +0200
>> From: Andreas Grunewald <airshipworld@...>
>> Subject: [Airshipworld List] Fwd: Auto-discard notification
>> To: the-list@...
>> Message-ID:
>>        <59c4bfbd0906041416ge3ee02bj28c9fb5af86b7445@...>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> ---------- 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
>> Sent from the The Airshipworld Mailinglist mailing list archive at
>> Nabble.com.
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Thu, 4 Jun 2009 17:34:06 -0400 (EDT)
>> From: brunians@...
>> Subject: Re: [Airshipworld List] Fwd: Auto-discard notification
>> To: the-list@...
>> Message-ID: <1569.72.171.0.141.1244151246.squirrel@...>
>> Content-Type: text/plain;charset=iso-8859-1
>>
>> No market.
>>
>> Sounds like a fun project.
>>
>> But I don't think there is a market. There aren't thousands, or even
>> hundreds of airship designers out there.
>>
>>
>> .
>>
>>
>>
>> > ---------- 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
>> > 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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>>
>> End of The-List Digest, Vol 14, Issue 1
>> ***************************************
>
>
>
> --
> Dr. Rajkumar S. Pant
> Associate Professor,
> Aerospace Engineering Department,
> IIT Bombay, Powai, Mumbai- 400076
> India
>
> Ph: +91-(0)22-25767127 (Off.)
>      +91-(0)22-25764115 (Lab.)
>      +91-(0)22-25722602 (Fax.)
>      +91-(0)22-25768127 (Res.)
> URL: http://www.aero.iitb.ac.in/~rkpant
>        http://www.aero.iitb.ac.in/~airships
>
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