A filter pack is disposed within {HEAD ~ the combustion chamber} along {TAIL ~ an inner diameter} of the outer wall 
along
A filter pack is disposed within { HEAD ~ the combustion chamber } along { TAIL ~ an inner diameter } of the outer wall
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH