An apparatus for preventing formation of ice on an engine, the apparatus comprising: a nozzle housing (104;207;300;400;500;602) having an internal cavity defining an internal volume of the nozzle housing (104;207;300;400;500;602), wherein the nozzle housing (104;207;300;400;500;602) is configured to receive gases from a compression stage (806;808) of the engine, and wherein the nozzle housing (104;207;300;400;500;602) is further configured to provide at least some of the gases to a leading edge housing (100;200;600;802) of the engine; a first nozzle (308;402;508;606) included in a first portion of the nozzle housing, wherein the first nozzle is configured to generate a first flow pattern, and is further configured to generate a first flow of a first portion of the gases into an internal volume of the leading edge housing (100;200;600;802) based on the first flow pattern; and a second nozzle (310;404;510;608) included in a second portion of the nozzle housing, wherein the second nozzle includes a concentric nozzle configured to generate a second flow pattern, wherein the second nozzle is configured to generate a second flow of a second portion of the gases into the internal volume of the leading edge housing (100;200;600;802) based on the second flow pattern; characterised in that the first nozzle (308;402;508;606) has a positional offset of between about 6.4 mm (.25 inches) and 19 mm (.75 inches) from a centerline of the nozzle housing; and that the second nozzle (310;404;510;608) has a positional offset of between about 6.4 mm (.25 inches) and 19 mm (.75 inches) from a centerline of the nozzle housing (100;200;600;802). a nozzle housing (104;207;300;400;500;602) having an internal cavity defining an internal volume of the nozzle housing (104;207;300;400;500;602), wherein the nozzle housing (104;207;300;400;500;602) is configured to receive gases from a compression stage (806;808) of the engine, and wherein the nozzle housing (104;207;300;400;500;602) is further configured to provide at least some of the gases to a leading edge housing (100;200;600;802) of the engine; a first nozzle (308;402;508;606) included in a first portion of the nozzle housing, wherein the first nozzle is configured to generate a first flow pattern, and is further configured to generate a first flow of a first portion of the gases into an internal volume of the leading edge housing (100;200;600;802) based on the first flow pattern; and a second nozzle (310;404;510;608) included in a second portion of the nozzle housing, wherein the second nozzle includes a concentric nozzle configured to generate a second flow pattern, wherein the second nozzle is configured to generate a second flow of a second portion of the gases into the internal volume of the leading edge housing (100;200;600;802) based on the second flow pattern; characterised in that the first nozzle (308;402;508;606) has a positional offset of between about 6.4 mm (.25 inches) and 19 mm (.75 inches) from a centerline of the nozzle housing; and that the second nozzle (310;404;510;608) has a positional offset of between about 6.4 mm (.25 inches) and 19 mm (.75 inches) from a centerline of the nozzle housing (100;200;600;802). <EOS>