Patent ID: 6122907
Filing Date: 2000-09-26
Classification: B64D,F02K,Y02T

Abstract:
An IR Suppressor (20) operative to suppress the infrared signature radiated from the high-temperature exhaust of an engine (12), the IR Suppressor (20) comprising:a primary exhaust manifold (22) including an elongate duct (28) having a longitudinal axis (A) and adapted for receiving a primary flow PF of the high-temperature engine exhaust E.sub.PF from the engine (12), and at least two high aspect ratio nozzles (30a, 30b) integrated in combination with said elongate duct (28) and extending laterally therefrom substantially perpendicular to the longitudinal axis so as to define at least two outlets at the same axial station along the length of the elongate duct (28);first and second mixing ducts (24a, 24b) disposed over said high aspect ratio nozzles (30a, 30b) thereby forming a mixer/ejector defining at least two ejector inlets (44); anda secondary flow shroud (26) disposed over said mixer/ejector and defining at least one longitudinal inlet (56) extending axially along the shroud (26) and disposed in fluid communication with at least one said ejector inlets (44), said longitudinal inlet for facilitating a secondary flow SF of ambient air to said at least one said ejector inlets (44).