Date: 16 May 2001 17:45:27 From: email@example.com (Stephen H. Westin) Organization: Cornell University References: 1 2 3 4 5
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firstname.lastname@example.org (Jonathan Thornburg) writes: <snip> > In article <airliners.2001.149@ditka.Chicago.COM>, > John Liebson <email@example.com> 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 Any information or opinions in this message are mine: they do not represent the position of Cornell University or any of its sponsors.