{TAIL ~ The air vehicle propulsion system} 10 wherein {HEAD ~ the outer blade row} is upstream of the inner blade row in a tractor configuration and power distributed by the power shaft to the outer blade row as controlled by the outer blade row pitch control unit is less than power distributed to the inner blade row as controlled by the inner blade row pitch control unit with the outer blade row in an extended position 
{ TAIL ~ The air vehicle propulsion system } 10 wherein { HEAD ~ the outer blade row } is upstream of the inner blade row in a tractor configuration and power distributed by the power shaft to the outer blade row as controlled by the outer blade row pitch control unit is less than power distributed to the inner blade row as controlled by the inner blade row pitch control unit with the outer blade row in an extended position
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH