Aircraft propulsion system comprising an apparatus for suppressing infrared signatures

摘要

An infrared signature suppression system (12) for reducing infrared radiation emitted by a vehicle. The system includes an elongate duct (46) mounted on the vehicle having a hollow interior extending along an axial centerline (52) between an upstream end (48) and a downstream end (50) for transporting exhaust gas emitted by the vehicle, and a baffle (78, 79, 80) positioned in the hollow interior of the duct (46) between the upstream end (48) and the downstream end. At least a portion of at least one of the duct (46) and the baffle (78, 79, 80) includes an emissivity coating for reducing infrared radiation emitted by the vehicle.