{TAIL ~ The outlet plane} of this tube to the combustion chamber is formed with {HEAD ~ a breakaway edge} which serves to stabilize and enlarge a backflow zone forming downstream 
{ TAIL ~ The outlet plane } of this tube to the combustion chamber is formed with { HEAD ~ a breakaway edge } which serves to stabilize and enlarge a backflow zone forming downstream
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH 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 OTH