Re: Titanium in the Shuttle
metalmorphosis_at_caverock.net.nz
Date: 03/27/05
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Date: 27 Mar 2005 13:36:30 -0800
kitplane01@gmail.com wrote:
> <kitplan...@gmail.com> wrote:
> >A titanium structure would weigh less...
>
> No, substantially more -- NASA estimated an extra 2t -- although that
> would be more than made up by lighter thermal protection.
>
> >NASA did study this option. Why did they pick aluminum? Was it
just
> >the cost of titanium fabrication.
>
> Why would a titanium structre weight 2 tons *more* than an aluminum
> one?Titanium has a higher strength/weight ratio, and although
aluminum
> has a better stiffness/weight ration, that does not seem as relevent.
> I would expect a titanium wing to weigh less, be stronger, but flex
> more.
Flexing wing might be a bit of a bitch when it comes to the heat sheild
tiles..... load comes on, gaps open up, hot gases get in...... ???
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