In this embodiment, when {TAIL ~ blade} 2 is in {HEAD ~ the upper sector} and moving upwind with a positive pitch, it creates mainly a lift component force 
In this embodiment , when { TAIL ~ blade } 2 is in { HEAD ~ the upper sector } and moving upwind with a positive pitch , it creates mainly a lift component force
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH