{HEAD ~ 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 the upstream blade row and downstream blade row through {TAIL ~ pitch control units} 26 and 42 
{ HEAD ~ 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 the upstream blade row and downstream blade row through { TAIL ~ pitch control units } 26 and 42
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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH