Patent ID: 6098402
Filing Date: 2000-08-08
Classification: B64D,F02K,F41H

Abstract:
An Infra-Red suppression system for an aircraft jet engine having an exhaust duct network in which exhaust duct walls surround an exhaust duct chamber, comprising:a. A matrix within said exhaust duct, including an array of longitudinal triangular saw-tooth ridged coolant channels disposed within said exhaust duct walls;b. A source of non-flammable cryogenic coolant;c. Injection and ejection means on said matrix for dispersing said cryogenic coolant within said exhaust duct chamber and without said exhaust duct walls; andd. An integrated cloaking chamber within said exhaust duct walls to shield heated engine parts from outside detection; andwherein said longitudinal triangular ridged coolant channels contain a singularly opposed saw-toothed configuration for transfer of heat from a hot-side surface of said exhaust duct chamber to said coolant channels contained within said exhaust duct walls.