초록 ▼

The nacelle of the aircraft is purged and the sidewall of the vector nozzles of the gas turbine engine in the nacelle is cooled by utilizing the engine fan air to drive ejector pumps mounted in series flow relationship, a rectangular mixing zone and a diffuser with a rectangular cross section and a

The nacelle of the aircraft is purged and the sidewall of the vector nozzles of the gas turbine engine in the nacelle is cooled by utilizing the engine fan air to drive ejector pumps mounted in series flow relationship, a rectangular mixing zone and a diffuser with a rectangular cross section and a step in the exhaust nozzle gaspath. This results in minimizing the amount of fan air for driving the system and enhancing engine thrust and enhanced sidewall cooling because the temperature of the mixed air is lower than heretofore known systems.

대표청구항 ▼

For aircraft having a nacelle and sidewalls, a gas turbine engine mounted in said nacelle, a source of fan air from the gas turbine engine, and a two-dimensional exhaust nozzle disposed adjacent said sidewalls mounted on said gas turbine engine, means for purging the nacelle and cooling the side wal

For aircraft having a nacelle and sidewalls, a gas turbine engine mounted in said nacelle, a source of fan air from the gas turbine engine, and a two-dimensional exhaust nozzle disposed adjacent said sidewalls mounted on said gas turbine engine, means for purging the nacelle and cooling the side walls comprising a booster pump attached to said sidewalls upstream of the discharge end of said two-dimensional exhaust nozzle, first nozzle means in said booster pump driven by the fan air, a mixing chamber for mixing air in said nacelle with said fan air, a diffuser attached to said mixing chamber, a second nozzle in series flow relationship with said first nozzle means disposed on the end of said diffuser, and a step defined by said sidewall and said second nozzle for reducing the static pressure of the gaspath for laying a blanket of cooling air adjacent the exposed surface of said sidewalls whereby said nacelle is continuously being purged and said sidewalls are continuously being cooled when the gas turbine engine is in operation.