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