Re: Dihedral on Horizontal Tail Surfaces

Date:         07 Dec 98 23:19:39 
From:         David Lednicer <>
Organization: Analytical Methods, Inc.
References:   1 2
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SteveK1957 wrote:
> The F-4 has the anhedral in the tail to counter the dihedral in the
> outboard panels of the wing which were bent up for ground clearance on
> carrier decks.

	You've got it backwards - the F-4 has tail anhedral to get the
horizontal tail down below the wing wake during the landing approach to
a carrier.  The wing dihedral was added late in the game to to counter
the effect of the horizontal tail anhedral on the aircraft's S&C.

David Lednicer             | "Applied Computational Fluid Dynamics"
Analytical Methods, Inc.   |   email:
2133 152nd Ave NE          |   tel:     (206) 643-9090
Redmond, WA  98052  USA    |   fax:     (206) 746-1299