embodiments ejector 78 may not be a variable ejector in one form ejector 78 is configured to selectively close and prevent entrainment of air from the mixed flow or third stream flow e g by changing the position of flaps 84 to engage the aft surface of nozzle 54 thereby closing the gap between nozzle 58 and nozzle 54 embodiments of the present invention include a gas turbine engine system comprising a fan system a compressor system in fluid communication with the fan system a combustion system in fluid communication with the compressor system a turbine system in fluid communication with the combustion system wherein the turbine system is configured to discharge a first stream flow in the form of an engine core flow and wherein the fan system is configured to discharge a second stream flow in the form of a bypass flow and to discharge a third stream flow in the form of an other bypass flow and a exhaust nozzle system in fluid communication with the fan system and the turbine system including a first nozzle configured to discharge the first stream flow and the second stream flow and an ejector configured to entrain ambient free stream air into the third stream flow in a refinement the exhaust nozzle system is configured to discharge the third stream flow with entrained ambient free stream air and the first stream flow and the second stream flow in another refinement.