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