The power shaft extends through and is supported by a counter rotation transmission unit which drives an inner blade row in {TAIL ~ counter rotational motion} to {HEAD ~ the outer blade row} 
The power shaft extends through and is supported by a counter rotation transmission unit which drives an inner blade row in { TAIL ~ counter rotational motion } to { HEAD ~ the outer blade row }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD