Please note the lack of camber on the piece in the photograph. Elevator needs no 'airfoil', it's work is done by deflecting airflow, as a trim tab would, and 'lift' isn't part of the purpose. It works on both sides of its companion, as the Rudder does with the VS, 'lift' ("airfoil" would inhibit one side, useless for what it needs to do). I will admit scale and perspective are difficult with these photos, but the unit appears to be symmetrical in cross section.
I'll repeat, as I see it, it is the outer and underside tip of the port elevator.
rgds all
Will
Last edited by Will Fraser; 20th Jun 2009 at 22:07.