Re: Discovery Makes A Fine Flight Up


"Pat Flannery" <flanner@xxxxxxxxxx> wrote in message
news:11ei4k0lj7r3sc3@xxxxxxxxxxxxxxxxxxxxx
>
>
> MJP wrote:
>
> >
> >It begs the question why does the tank have external cable trays and
pipes,
> >couldn't they be faired in properly?
> >
> >
>
> Temperature concerns from getting them too near the cold tank surface?
> There is also the expansion/contraction problem due to the temperature
> to deal with.

And the weight issue. Every pound of mass added to the ET is very nearly
one pound of payload you have to remove from the orbiter.

Then there's the cost issue of making a change (and certifying that change)
to the ET design and the added cost per ET.

Jeff
--
Remove icky phrase from email address to get a valid address.


.

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