{HEAD ~ This action} prevents {TAIL ~ a decrease} in engine performance in that it provides better fuel distribution at the higher bypass ratios 
{ HEAD ~ This action } prevents { TAIL ~ a decrease } in engine performance in that it provides better fuel distribution at the higher bypass ratios
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