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