Re: Heating Helium?

> Date: Wed, 26 Mar 2008 11:47:10 +0100
> From: Andreas.Burkart@...
> To: the-list@...
> Subject: Re: [Airshipworld List] Heating Helium?
>
> This was used by Picard for the Breitling Orbiter.
> The principle is called, Rozière balloon, but I never read about
> airships that used this.
>
> http://en.wikipedia.org/wiki/Breitling_Orbiter_3#The_balloon
>
>
>
>
>
>
> 2008/3/26, Nicholas J. Rogers <n_j_rogers@...>:
> >
> > I'm sure I read about this being done somewhere... Maybe it was in the US
> > Navy rigids?
> >
> > Or maybe I'm going mad and my memory has imploded...
> >
> > Nicholas
> >
> > > Date: Wed, 26 Mar 2008 03:28:03 -0700
> > > From: duncan.rice@...
> > > To: the-list@...
> > > Subject: [Airshipworld List] Heating Helium?
> >
> > >
> > >
> > > Thanks for the blog post in reply to my original question, and yes it was
> > the
> > > mention of superheat on the goodyear blimp blog that got me thinking about
> > > this.
> > >
> > > I have been trawling through my recent internet history to try and find
> > the
> > > source of a related question, but can't seem to find it. The question...
> > >
> > > Why don't we use heated helium to provide increased lift?
> > >
> > > It would seem that, as helium is an inert gas, there would be no reason
> > why
> > > it couldn't be heated within an envelope. Not just in the superheat sense,
> > > but in a similar way to hot-air balloons or hot-air airships - why not
> > > hot-helium airships?
> > >
> > > Would it not be possible to increase the temperature of the lift gas in
> > > proporsion to the extra lift needed based on the weight of the cargo being
> > > carried?
> > >
> > > It seems so obvious now, there must be a reason that it wouldn't work or
> > > surely we would have done it long ago.
> > >
> > >
> > >
> > > -----
> > > the past, present and future of airships : http://www.blimpship.com
> > > blimpship.com
> > > --
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> > http://www.nabble.com/A-Question-of-Temperature-tp16274781p16299635.html
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> > Nabble.com.
> > >
> > >
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