Re: Wing vs. tail-mounted engines?

Date:         16 May 2001 17:45:27 
From:         westin* (Stephen H. Westin)
Organization: Cornell University
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  or MIME structure (Jonathan Thornburg) writes:


> In article <airliners.2001.149@ditka.Chicago.COM>,
> John Liebson  <> asked
> >What about wing-mounted-engine aircraft that _also_ have tail-mounted
> >fuel tanks?
> Not nice:
> * fuel pipes in the aft fuselage (--> big fire risk in crashes)
> * fuel tanks far from center of gravity --> big trim change as you burn
>   that fuel --> hurts aerodynamic efficiency (fighting that trim change
>   will cost extra drag)

I believe the 747-400 offers optional fuel storage in the horizontal
stabilizer. I suspect that this could be used to trim CG during
cruise; it might even wind up as a net advantage, as with Concorde.

-Stephen H. Westin
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