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