The turbine type DFWT device 1, in which a bottom horizontally oriented flap can be pitched outward, down, or relatively inward, up, in order to produce more or less lift in co planar conjunction with the roof top extended planar pressure zone, so that {HEAD ~ the relative mass} of {TAIL ~ the DFWT}, and the tendency of the entire DFWT unit to pitch backward against the concentric double nested rotationally capable pipe attachment to the base, can be off set dynamically by the lift generated by said bottom flap 
The turbine type DFWT device 1 , in which a bottom horizontally oriented flap can be pitched outward , down , or relatively inward , up , in order to produce more or less lift in co planar conjunction with the roof top extended planar pressure zone , so that { HEAD ~ the relative mass } of { TAIL ~ the DFWT } , and the tendency of the entire DFWT unit to pitch backward against the concentric double nested rotationally capable pipe attachment to the base , can be off set dynamically by the lift generated by said bottom flap
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