A tethered wind turbine, whose blades move in a closed cylindrical path, and have their pitch angle changing as a function of the rotational angle in order to gather wind energy mainly in the upwind and downwind sectors of the cylindrical path, and to deflect air downwards mainly in the upper and lower sectors of {HEAD ~ the cylindrical path} to generate {TAIL ~ lift} for station keeping 
A tethered wind turbine , whose blades move in a closed cylindrical path , and have their pitch angle changing as a function of the rotational angle in order to gather wind energy mainly in the upwind and downwind sectors of the cylindrical path , and to deflect air downwards mainly in the upper and lower sectors of { HEAD ~ the cylindrical path } to generate { TAIL ~ lift } for station keeping
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH