The fuel is passed over the cores and metal particles in passing between {TAIL ~ the inlet} and {HEAD ~ outlet} 
The fuel is passed over the cores and metal particles in passing between { TAIL ~ the inlet } and { HEAD ~ outlet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD