In the idling mode, there is an upper limit to a pitch angle of the blades 8 and under the control of the control unit 40, {TAIL ~ the pitch drive mechanism} controls the pitch angle of the blades 8 in the range that does not exceed {HEAD ~ the upper limit} 
In the idling mode , there is an upper limit to a pitch angle of the blades 8 and under the control of the control unit 40 , { TAIL ~ the pitch drive mechanism } controls the pitch angle of the blades 8 in the range that does not exceed { HEAD ~ the upper limit }
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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD