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