초록 ▼

An infrared radiation Coanda suppressor of an exhaust system encloses a Coanda surface for guiding exhaust gases into the atmosphere. The infrared radiation suppressor further uses cooling films for reducing the temperature of the Coanda surface and other exposed surfaces. A cool air entrainment flo

An infrared radiation Coanda suppressor of an exhaust system encloses a Coanda surface for guiding exhaust gases into the atmosphere. The infrared radiation suppressor further uses cooling films for reducing the temperature of the Coanda surface and other exposed surfaces. A cool air entrainment flow of the exhaust gases prevents the buildup of recirculating hot gases in the exhaust chamber. As a result, IR radiation is suppressed from areas of the exhaust system which are exposed to IR detectors.

대표청구항 ▼

[ We claim:] [1.] Apparatus utilizing the Coanda effect for suppressing the emission of infrared radiation from surfaces affected by hot exhaust gases of an engine, comprising:an enclosure having an opening to atmosphere;exhaust means projecting into the enclosure but away from the opening and outsi

[ We claim:] [1.] Apparatus utilizing the Coanda effect for suppressing the emission of infrared radiation from surfaces affected by hot exhaust gases of an engine, comprising:an enclosure having an opening to atmosphere;exhaust means projecting into the enclosure but away from the opening and outside the line of sight thereof for molding the hot exhaust gases from the engine into a fluid sheet;a Coanda surface extending from the molding exhaust means for directing the fluid sheet curvilinearly into the atmosphere through the opening of the enclosure; anda first inlet aligned with the Coanda surface for injecting cool air onto the Coanda surface, in the direction of the exhaust gases for forming a first laminar cooling film between the exhaust gas fluid sheet and the surface.