The turbine engine 4 wherein the trailing surface is tapered from {HEAD ~ the maximum radius} to lead into {TAIL ~ the inlet} 
The turbine engine 4 wherein the trailing surface is tapered from { HEAD ~ the maximum radius } to lead into { TAIL ~ the inlet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL