Patent ID: 7923668
Filing Date: 2011-04-12
Classification: B64D,H05B

Abstract:
1. An acoustically treated aircraft engine nacelle inlet lip, comprising: (a) an acoustic cellular core arranged along an inner barrel portion of the inlet lip, the acoustic core comprising a laminated composite outer skin and an inner skin; and (b) an erosion shield arranged over at least a portion of the laminated composite outer skin, and overlying at least a portion of the acoustic core; (c) wherein the laminated composite outer skin has at least one electrically conductive heater layer disposed therein; (d) wherein the laminated composite outer skin includes a first set of openings extending therethrough, the first set of openings communicating with the acoustic cellular core; and (e) wherein the erosion shield includes a second set of openings extending therethrough, the second set of openings communicating with said first set of openings.