Re: 747 wing flexibility

Date:         13 Oct 98 02:48:23 
From:         Alan Browne <>
Organization: Bell Solutions
References:   1 2 3
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> One can see this during takeoff, the wing rising as lift increases with
> speed.

On a -400 if you are sitting in the right seat and the airplane is near
or at max gross weight, the flex in the wing is dramatic during rotation
on takeoff.  It almost appears (illusion) to be flexing backwards!.  I
would guess this takeoff flex upward to be on the order of 10 feet.