{TAIL ~ The trailing surface} of {HEAD ~ the particle separator} is tapered and curved radially inwardly away from the maximum radius  
{ TAIL ~ The trailing surface } of { HEAD ~ the particle separator } is tapered and curved radially inwardly away from the maximum radius
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH