초록 ▼

The assembly comprises a collector nozzle which is fixed to a turbine engine and which is elbowed laterally towards the exterior and which debouches into injection nozzles which are also elbowed and which open into a mixer masked laterally by means of a fairing, of which a shaped forward section def

The assembly comprises a collector nozzle which is fixed to a turbine engine and which is elbowed laterally towards the exterior and which debouches into injection nozzles which are also elbowed and which open into a mixer masked laterally by means of a fairing, of which a shaped forward section defines, with an internal shaped screen and a central plug, a semi dynamic principal air inlet. The aspirated air dilutes the gas in the mixer which is terminated by means of an elbow directed upwardly and which can pivot about a transverse axis. In the position of maximum deviation upwardly this elbow masks the hot parts of the assembly from the rear. The assembly is particularly useful for equipping helicopters with lateral exhaust gas turbine engines, and it can be original equipment or retrofitted. The assembly serves to reduce the infra red emission from the helicopter, to defeat infra red homing missiles.

대표청구항 ▼

A plume diluter diverter assembly for a turbine engine of a heavier than air machine, said machine including a fuselage having a housing, said turbine engine being positioned in said housing and having a turbine and a turbine axis, said plume diluter diverter assembly comprising: a plume diluter div

A plume diluter diverter assembly for a turbine engine of a heavier than air machine, said machine including a fuselage having a housing, said turbine engine being positioned in said housing and having a turbine and a turbine axis, said plume diluter diverter assembly comprising: a plume diluter diverter body, and a collector-injector means for collecting hot exhaust gases from the turbine engine and injecting the exhuast gases into said body; said collector-injector means comprising an upstream section defining a collector nozzle for the exhaust gases having a cross section which deforms progressively from a substantially circular inlet centered on said turbine axis to a substantially rectangular outlet having a vertical height and a lateral width, said height of said rectangular outlet being greater than said width, and a downstream section extending from said rectangular outlet and splitting into at least two injecton nozzles of substantially rectangular cross section, each having an outlet, said at least two injection nozzles being positioned laterally of each other, said collector-injector means being formed as a laterally extending S-shaped member with said collector nozzle being positioned inside said housing and elbowed such that said rectangular outlet opens towards the outside of said housing and said injeciton nozzles being positioned outside said housing laterally adjacent thereto and elbowed such that said outlets of said injection nozzles direct the flow of hot exhaust gases in a direction substantially parallel to said turbine axis laterally offset from said turbine axis; said plume diluter diverter body comprising a casing, said injection nozzles being positioned in said casing, said casing having a principal fresh air entry portion located substantially level with said collector-injector means and defined on its outside by a faired forward section laterally covering said at least two injection nozzles and on its interior by an internal faired screen masking said at least two injection nozzles to the front and side, a mixer positioned in said casing laterally covered by said faired forward section and having a substantially rectangular cross section with a vertical height and lateral width, said height of said mixer being greater than said width of said mixer, said outlets of said injection nozzles debouching in an entry portion of said mixer, said mixer being fed with ambient fresh air aspirated by suction effect through said fresh air entry portion of said casing which dilutes the hot exhaust gases and lowers the temperature thereof, and an elbow section attached to said casing at a downstream outlet end of said mixer, said elbow section being directed upwardly and having a substantially rectangular cross section with a height and a width, said height of said elbow section being greater than said width, said elbow section masking said mixer and said injection nozzles from view from behind and diverting a plume of gaseous mixture from said mixer.