[modeleng] Re: Fw: Re: Alumin(i)um and lead
- From: "Dennis Jewitt" <dennis.jewitt@xxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Wed, 2 Mar 2005 18:26:56 +0100
Barry,
I saw your answer first time round but fearing it OT did not
respond.
Anyway some web research appears to suggest material is used as
counterweights for balancing control surfaces as you suggest but also for
trim correction as Andy suggested. One reference suggested that 1500kg of
DU was in the tailfin of the 747 that crashed at Amsterdam. Appartently
the material is relatively safe until burnt when the resulting fine
particles cause problems.
Dennis Jewitt
Kent UK
----- Original Message -----
From: "BarriePurslow" <Barrie@xxxxxxxxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, March 01, 2005 11:32 PM
Subject: [modeleng] Fw: Re: Alumin(i)um and lead
> Alan,
>
> I have sent this twice but it has not appeared. Is there a problem?
>
> Barrie
>
>
> ----- Original Message -----
> From: "BarriePurslow" <Barrie@xxxxxxxxxxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Sunday, February 27, 2005 7:40 PM
> Subject: Re: [modeleng] Re: Alumin(i)um and lead
>
>
> > Dennis,
> >
> > > What was the purpose of the depleted uranium used by Boeing in
the
> > 747
> >
> > It would almost certainly be used for mass balancing of the control
> > surfaces. This is done to reduce problems with flutter at high speed.
> > Depleted uranium is useful because of its high density - the balance
> weights
> > are smaller and can be fitted more readily in a confined space.
> >
> > Barrie
> >
>
>
>
> --
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