As the gas enters the tip 5 it assumes {HEAD ~ the nonaxisymmetric shape} of {TAIL ~ the tip} 5 to provide a nonaxisymmetric gas planar like velocity profile exiting the exit port 9 
As the gas enters the tip 5 it assumes { HEAD ~ the nonaxisymmetric shape } of { TAIL ~ the tip } 5 to provide a nonaxisymmetric gas planar like velocity profile exiting the exit port 9
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH