Control inputs 68 to the counter rotational gears 44 in the concentric counter rotation transmission unit 28 distribute shaft horsepower generated by the engine core to {HEAD ~ the upstream blade row and downstream blade row} through {TAIL ~ pitch control units} 26 and 42 
Control inputs 68 to the counter rotational gears 44 in the concentric counter rotation transmission unit 28 distribute shaft horsepower generated by the engine core to { HEAD ~ the upstream blade row and downstream blade row } through { TAIL ~ pitch control units } 26 and 42
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 HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH