Why are some Tomahawk missiles' nose duck-nose shaped? Why there is a duck-like shape in this Tomahawk missile's nose?  I see this shape in most Tomahawk images; however, not every Tomahawk's nose is shaped like this.  If it is an aerodynamic feature, what is its common name?
I developed the shape for Convair back in the late 90's.  It was called a chined nose and Carlo is right, there were no aero considerations for this shape.  It was purely RCS.