A cast alloy body of cylindrical form with longitudinal flutes or grooves in a tubular casing has {HEAD ~ liquid fuel} passed through the casing and in {TAIL ~ contact} with the body 
A cast alloy body of cylindrical form with longitudinal flutes or grooves in a tubular casing has { HEAD ~ liquid fuel } passed through the casing and in { TAIL ~ contact } with the body
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH