{TAIL ~ an inflator housing} having two walls, an inner wall and {HEAD ~ an outer wall}, the inner and outer walls forming a combustion chamber 
{ TAIL ~ an inflator housing } having two walls , an inner wall and { HEAD ~ an outer wall } , the inner and outer walls forming a combustion chamber
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH