Further passageways near the blade root portion do not intersect, {HEAD ~ the reduced cooling} in that area causes expansion and {TAIL ~ stress absorption} 
Further passageways near the blade root portion do not intersect , { HEAD ~ the reduced cooling } in that area causes expansion and { TAIL ~ stress absorption }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL