Re: 747 wing flexibility

Date:         12 Oct 98 00:02:39 
From:         jthai@my-dejanews.com
Organization: Deja News - The Leader in Internet Discussion
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In article <airliners.1998.1520@ohare.Chicago.COM>, Joseph Edward Nemec <none@mit.edu> wrote:
> Stephen Gilkes wrote:
> > According to Karl Sabbach's excellent book "21st Century jet" the wings of
> > the 777 were expected to snap at about 24 feet from the normal position.
> >
> > He doesn't mention in distance when the wings actually snapped but does
> > state that the force involved was 154 percent of the maximum normal load.
>
> IIRC the wings never snapped. The body of the plane caved in first.

Just to confirm with Mr. J. E. Nemec, all brackets designed to hold galley
structures at the wing roots are to accommodate movement in the vertical
direction, for example, the floor is concave in turbulence.

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