An apparatus 4, the fuel tube having a fixed location so as to vary in proximity to the shock wave upon {HEAD ~ changes} in nozzle flow area and {TAIL ~ manifold vacuum} 
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An apparatus 4 , the fuel tube having a fixed location so as to vary in proximity to the shock wave upon { HEAD ~ changes } in nozzle flow area and { TAIL ~ manifold vacuum }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL