Patent ID: 8777163

Claim:
An ice protection system comprising: an engine nacelle inlet having an electrically conductive layer comprising a metallic erosion barrier proximate an exterior surface and an acoustic liner comprising a composite facesheet, a honeycomb core and a composite backsheet positioned interior of the electrically conductive layer, wherein the composite facesheet defines a plurality of perforations and the metallic erosion barrier defines a plurality of perforations aligned and coextensive with respective perforations of the composite facesheet; at least one induction coil spaced apart from the electrically conductive layer and disposed interior of the acoustic liner so as to be spaced apart from the exterior surface by the acoustic liner; and a signal source configured to provide alternating current to the at least one induction coil to thereby generate an electromagnetic field that creates an eddy current in the electrically conductive layer so as to heat the electrically conductive layer.